Treatment Tracker

The Doctors and Services in Medicare Part B

Treatment Tracker » Iowa » Iowa city

NICHOLAS WALKER M.D.

200 HAWKINS DR DEPARTMENT OF INTERNAL MEDICINE, IOWA CITY, IA, 52242 | (319) 339-3883

How This Provider Compares

This Provider

Avg in State & Specialty

Providers in this state and specialty were reimbursed, on average, $206 per patient in 2015.
They performed about 2 services per patient. Here’s how this provider compares.

Number of
Patients
1,379
Rank: 10th
out of 27 providers in this state & specialty
Services
Performed
2,996
Rank: 12th
out of 27 providers in this state & specialty
Avg Services
Per Patient
2.2 This Provider
Avg 2.4
Total Paid
by Medicare
$214K
Rank: 8th
out of 27 providers in this state & specialty
Avg Paid
Per Patient
$155 This Provider
Avg $206

How This Provider’s Patients Compare

Doctors often say their patients are sicker or more complex than those of their peers. The measure displayed below, used by the Centers for Medicare and Medicaid Services, takes into account patients’ characteristics to estimate whether they are expected to have above-average Medicare spending. It considers patients’ age, sex, diagnoses from the past year and other factors. This provider’s score below takes into account all of his Part B patients.

This Provider's Services

This provider performed 77 different services in 2015
(43 were redacted as they were performed on less than 11 patients)

All Services

Show Only:

Drug Services
Medical Services
CATEGORY
Description of Service
Times Performed (or Units) This Service's Rank Patients Unique Visits
Per Patient
Billed to Medicare Payments from Medicare
medical
EVALUATION AND MANAGEMENT

Established patient office or other outpatient, visit typ... +

Established patient office or other outpatient, visit typically 25 minutes ×

Service Code: 99214
Performed in an office
702
times performed,
23% of his services

1st 2nd

most performed service for this provider most performed service in this state & specialty

552
patients got this service, 40% of his patients
1.3
average number of visits a patient made for this service
(Peers: 1.3)
$175,240.26an average of $249.63 per time performed $46,640.88
an average of $66.44 per time performed
medical
MEDICINE

Routine electrocardiogram (ekg) using at least 12 leads w... +

Routine electrocardiogram (ekg) using at least 12 leads with interpretation and report ×

Service Code: 93010
Performed in a facility
322
times performed,
11% of his services

2nd 1st

most performed service for this provider most performed service in this state & specialty

276
patients got this service, 20% of his patients
1.1
average number of visits a patient made for this service
(Peers: 1.3)
$11,302.20an average of $35.10 per time performed $1,693.72
an average of $5.26 per time performed
medical
EVALUATION AND MANAGEMENT

Established patient office or other outpatient, visit typ... +

Established patient office or other outpatient, visit typically 25 minutes ×

Service Code: 99214
Performed in a facility
302
times performed,
10% of his services

3rd 11th

most performed service for this provider most performed service in this state & specialty

238
patients got this service, 17% of his patients
1.3
average number of visits a patient made for this service
(Peers: 1.2)
$97,742.30an average of $323.65 per time performed $17,102.26
an average of $56.63 per time performed
drug
DRUGS

Injection, regadenoson, 0.1 mg

Service Code: J2785
Performed in an office
196
times performed,
7% of his services

4th 7th

most performed service for this provider most performed service in this state & specialty

49
patients got this service, 4% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$17,640.00an average of $90.00 per time performed $8,085.00
an average of $41.25 per time performed
medical
MEDICINE

Ultrasound examination of heart including color-depicted ... +

Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function ×

Service Code: 93306
Performed in a facility
148
times performed,
5% of his services

5th 6th

most performed service for this provider most performed service in this state & specialty

144
patients got this service, 10% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$58,190.64an average of $393.18 per time performed $6,403.96
an average of $43.27 per time performed
medical
MEDICINE

Ultrasound examination of heart including color-depicted ... +

Ultrasound examination of heart including color-depicted blood flow rate, direction, and valve function ×

Service Code: 93306
Performed in an office
147
times performed,
5% of his services

6th 8th

most performed service for this provider most performed service in this state & specialty

131
patients got this service, 9% of his patients
1.1
average number of visits a patient made for this service
(Peers: 1)
$109,169.55an average of $742.65 per time performed $15,798.09
an average of $107.47 per time performed
medical
ADMINISTRATIVE

Technetium tc-99m sestamibi, diagnostic, per study dose

Service Code: A9500
Performed in an office
102
times performed,
3% of his services

7th 14th

most performed service for this provider most performed service in this state & specialty

51
patients got this service, 4% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$30,600.00an average of $300.00 per time performed $23,520.18
an average of $230.59 per time performed
medical
RADIOLOGY

Nuclear medicine study of vessels of heart using drugs or... +

Nuclear medicine study of vessels of heart using drugs or exercise multiple studies ×

Service Code: 78452
Performed in an office
98
times performed,
3% of his services

8th 22nd

most performed service for this provider most performed service in this state & specialty

98
patients got this service, 7% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$85,525.58an average of $872.71 per time performed $20,458.48
an average of $208.76 per time performed
medical
EVALUATION AND MANAGEMENT

New patient office or other outpatient visit, typically 4... +

New patient office or other outpatient visit, typically 45 minutes ×

Service Code: 99204
Performed in an office
95
times performed,
3% of his services

9th 15th

most performed service for this provider most performed service in this state & specialty

95
patients got this service, 7% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$37,989.55an average of $399.89 per time performed $10,387.30
an average of $109.34 per time performed
medical
EVALUATION AND MANAGEMENT

Subsequent hospital inpatient care, typically 25 minutes ... +

Subsequent hospital inpatient care, typically 25 minutes per day ×

Service Code: 99232
Performed in a facility
77
times performed,
3% of his services

10th 5th

most performed service for this provider most performed service in this state & specialty

35
patients got this service, 3% of his patients
2.2
average number of visits a patient made for this service
(Peers: 1.8)
$11,985.05an average of $155.65 per time performed $4,124.89
an average of $53.57 per time performed
medical
MEDICINE

Exercise or drug-induced heart and blood vessel stress te... +

Exercise or drug-induced heart and blood vessel stress test with ekg monitoring, physician interpretation and report ×

Service Code: 93018
Performed in an office
53
times performed,
2% of his services

11th 21st

most performed service for this provider most performed service in this state & specialty

53
patients got this service, 4% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$5,321.20an average of $100.40 per time performed $586.71
an average of $11.07 per time performed
medical
MEDICINE

Exercise or drug-induced heart and blood vessel stress te... +

Exercise or drug-induced heart and blood vessel stress test with ekg monitoring, physician supervision, interpretation, and report ×

Service Code: 93015
Performed in an office
51
times performed,
2% of his services

12th 28th

most performed service for this provider most performed service in this state & specialty

51
patients got this service, 4% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$12,750.00an average of $250.00 per time performed $2,203.71
an average of $43.21 per time performed
medical
MEDICINE

Exercise or drug-induced heart and blood vessel stress te... +

Exercise or drug-induced heart and blood vessel stress test with ekg monitoring, physician interpretation and report ×

Service Code: 93018
Performed in a facility
46
times performed,
2% of his services

13th 12th

most performed service for this provider most performed service in this state & specialty

46
patients got this service, 3% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$5,404.08an average of $117.48 per time performed $499.10
an average of $10.85 per time performed
medical
EVALUATION AND MANAGEMENT

Established patient office or other outpatient visit, typ... +

Established patient office or other outpatient visit, typically 15 minutes ×

Service Code: 99213
Performed in an office
45
times performed,
2% of his services

14th 3rd

most performed service for this provider most performed service in this state & specialty

45
patients got this service, 3% of his patients
1
average number of visits a patient made for this service
(Peers: 1.3)
$7,945.20an average of $176.56 per time performed $2,008.35
an average of $44.63 per time performed
medical
MEDICINE

Exercise or drug-induced heart and blood vessel stress te... +

Exercise or drug-induced heart and blood vessel stress test with ekg monitoring and physician supervision ×

Service Code: 93016
Performed in an office
42
times performed,
1% of his services

15th 24th

most performed service for this provider most performed service in this state & specialty

42
patients got this service, 3% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$3,780.00an average of $90.00 per time performed $710.22
an average of $16.91 per time performed
medical
EVALUATION AND MANAGEMENT

New patient office or other outpatient visit, typically 4... +

New patient office or other outpatient visit, typically 45 minutes ×

Service Code: 99204
Performed in a facility
36
times performed,
1% of his services

16th Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

36
patients got this service, 3% of his patients
1
average number of visits a patient made for this service
$17,268.12an average of $479.67 per time performed $3,495.96
an average of $97.11 per time performed
medical
MEDICINE

Ultrasound scanning of blood flow (outside the brain) on ... +

Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck ×

Service Code: 93880
Performed in an office
31
times performed,
1% of his services

17th 32nd

most performed service for this provider most performed service in this state & specialty

31
patients got this service, 2% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$12,458.90an average of $401.90 per time performed $2,690.18
an average of $86.78 per time performed
medical
EVALUATION AND MANAGEMENT

Initial hospital inpatient care, typically 50 minutes per... +

Initial hospital inpatient care, typically 50 minutes per day ×

Service Code: 99222
Performed in a facility
28
times performed,
0.93% of his services

18th 19th

most performed service for this provider most performed service in this state & specialty

28
patients got this service, 2% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$8,228.08an average of $293.86 per time performed $2,707.32
an average of $96.69 per time performed
medical
MEDICINE

Insertion of catheter in left heart for imaging of blood ... +

Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart ×

Service Code: 93458
Performed in a facility
27
times performed,
0.9% of his services

19th 9th

most performed service for this provider most performed service in this state & specialty

27
patients got this service, 2% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$34,792.47an average of $1,288.61 per time performed $4,965.03
an average of $183.89 per time performed
medical
MEDICINE

Insertion of catheter for diagnostic evaluation of right ... +

Insertion of catheter for diagnostic evaluation of right heart structures ×

Service Code: 93451
Performed in a facility
23
times performed,
0.77% of his services

20th 48th

most performed service for this provider most performed service in this state & specialty

23
patients got this service, 2% of his patients
1
average number of visits a patient made for this service
(Peers: 1.1)
$23,621.00an average of $1,027.00 per time performed $2,414.31
an average of $104.97 per time performed
medical
RADIOLOGY

Nuclear medicine study of vessels of heart using drugs or... +

Nuclear medicine study of vessels of heart using drugs or exercise multiple studies ×

Service Code: 78452
Performed in a facility
23
times performed,
0.77% of his services

21st 36th

most performed service for this provider most performed service in this state & specialty

23
patients got this service, 2% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$14,099.00an average of $613.00 per time performed $1,392.19
an average of $60.53 per time performed
medical
MEDICINE

Insertion of catheter for imaging of heart blood vessels ... +

Insertion of catheter for imaging of heart blood vessels or grafts ×

Service Code: 93454
Performed in a facility
21
times performed,
0.7% of his services

22nd 23rd

most performed service for this provider most performed service in this state & specialty

19
patients got this service, 1% of his patients
1.1
average number of visits a patient made for this service
(Peers: 1)
$42,926.52an average of $2,044.12 per time performed $3,036.39
an average of $144.59 per time performed
medical
MEDICINE

Heart rhythm tracing, analysis, and interpretation of 48-... +

Heart rhythm tracing, analysis, and interpretation of 48-hour ekg ×

Service Code: 93227
Performed in an office
20
times performed,
0.67% of his services

23rd Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

20
patients got this service, 1% of his patients
1
average number of visits a patient made for this service
$4,240.00an average of $212.00 per time performed $408.80
an average of $20.44 per time performed
medical
MEDICINE

Ultrasound scanning of blood flow (outside the brain) on ... +

Ultrasound scanning of blood flow (outside the brain) on both sides of head and neck ×

Service Code: 93880
Performed in a facility
20
times performed,
0.67% of his services

24th Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

20
patients got this service, 1% of his patients
1
average number of visits a patient made for this service
$4,352.00an average of $217.60 per time performed $542.40
an average of $27.12 per time performed
medical
MEDICINE

Insertion of probe in esophagus for heart ultrasound exam... +

Insertion of probe in esophagus for heart ultrasound examination including interpretation and report ×

Service Code: 93312
Performed in a facility
19
times performed,
0.63% of his services

25th Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

17
patients got this service, 1% of his patients
1.1
average number of visits a patient made for this service
$5,700.00an average of $300.00 per time performed $1,554.77
an average of $81.83 per time performed
medical
RADIOLOGY

Nuclear medicine study of vessels of heart using drugs or... +

Nuclear medicine study of vessels of heart using drugs or exercise single study ×

Service Code: 78451
Performed in a facility
18
times performed,
0.6% of his services

26th Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

18
patients got this service, 1% of his patients
1
average number of visits a patient made for this service
$8,226.00an average of $457.00 per time performed $873.18
an average of $48.51 per time performed
medical

Catheter insertion of stents in major coronary artery or ... +

Catheter insertion of stents in major coronary artery or branch, accessed through the skin ×

Service Code: 92928
Performed in a facility
17
times performed,
0.57% of his services

27th 16th

most performed service for this provider most performed service in this state & specialty

16
patients got this service, 1% of his patients
1.1
average number of visits a patient made for this service
(Peers: 1)
$26,871.05an average of $1,580.65 per time performed $7,553.78
an average of $444.34 per time performed
medical
MEDICINE

Evaluation, testing, and programming adjustment of perman... +

Evaluation, testing, and programming adjustment of permanent dual lead pacemaker system with physician analysis, review, and report ×

Service Code: 93280
Performed in an office
16
times performed,
0.53% of his services

28th 42nd

most performed service for this provider most performed service in this state & specialty

16
patients got this service, 1% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$1,920.00an average of $120.00 per time performed $530.88
an average of $33.18 per time performed
medical
MEDICINE

Routine electrocardiogram (ekg) using at least 12 leads w... +

Routine electrocardiogram (ekg) using at least 12 leads with interpretation and report ×

Service Code: 93010
Performed in an office
15
times performed,
0.5% of his services

29th 49th

most performed service for this provider most performed service in this state & specialty

15
patients got this service, 1% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$891.00an average of $59.40 per time performed $96.45
an average of $6.43 per time performed
medical
MEDICINE

External shock to heart to regulate heart beat

Service Code: 92960
Performed in a facility
15
times performed,
0.5% of his services

30th Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

14
patients got this service, 1% of his patients
1.1
average number of visits a patient made for this service
$7,500.00an average of $500.00 per time performed $1,363.65
an average of $90.91 per time performed
medical
MEDICINE

Ultrasound examination of the heart performed during rest... +

Ultrasound examination of the heart performed during rest, exercise, and/or drug-induced stress with interpretation and report ×

Service Code: 93350
Performed in a facility
14
times performed,
0.47% of his services

31st Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

14
patients got this service, 1% of his patients
1
average number of visits a patient made for this service
$4,319.98an average of $308.57 per time performed $618.10
an average of $44.15 per time performed
medical
EVALUATION AND MANAGEMENT

Established patient office or other outpatient visit, typ... +

Established patient office or other outpatient visit, typically 15 minutes ×

Service Code: 99213
Performed in a facility
14
times performed,
0.47% of his services

32nd Alert 634c0670e9b0f4e97fc9f1e1f07be123ffeab88a9de548d41da5a24a8f6054bd

most performed service for this provider 5 or fewer providers in this specialty in IA perform this service

14
patients got this service, 1% of his patients
1
average number of visits a patient made for this service
$2,960.02an average of $211.43 per time performed $497.14
an average of $35.51 per time performed
medical
MEDICINE

Exercise or drug-induced heart and blood vessel stress te... +

Exercise or drug-induced heart and blood vessel stress test with ekg monitoring and physician supervision ×

Service Code: 93016
Performed in a facility
13
times performed,
0.43% of his services

33rd 18th

most performed service for this provider most performed service in this state & specialty

13
patients got this service, 0.94% of his patients
1
average number of visits a patient made for this service
(Peers: 1)
$1,300.00an average of $100.00 per time performed $203.06
an average of $15.62 per time performed
medical
MEDICINE

Heart rhythm tracing, analysis, and interpretation of 48-... +

Heart rhythm tracing, analysis, and interpretation of 48-hour ekg ×

Service Code: 93227
Performed in a facility
12
times performed,
0.4% of his services

34th 35th

most performed service for this provider most performed service in this state & specialty

11
patients got this service, 0.8% of his patients
1.1
average number of visits a patient made for this service
(Peers: 1)
$1,320.00an average of $110.00 per time performed $183.36
an average of $15.28 per time performed

Office Visits

Medicare reimburses office visits using a five-point scale, with five being the most intensive and costly. The chart below shows what percentage of this provider’s office visits were reimbursed at each level. A higher than average proportion of costly visits is not necessarily an indication of a problem, but it may be worth asking about.

Hover over each slice to see percentage breakdown.

Nicholas E Walker
Average for Interventional Cardiology Providers in Iowa

Notes: Medicare redacted this data for any services provided to fewer than 11 patients. The contact information listed above is the most current we have for this provider. The services listed on this page may have been delivered at a previous address or as part of a different practice.

Incorrect Info? If you are a provider and you believe your address is incorrect, check the listing you created on the National Provider Identifier registry. If you change your listing, send a note to [email protected] and we will update your information. If you have other questions about this data, send a note to [email protected]. Here's a link to Medicare's data on this provider.

Sources: Centers for Medicare and Medicaid Services, National Plan and Provider Enumeration System, American Medical Association

Services that begin with a letter come from CMS. All other codes and descriptions of the medical procedures are from the Current Procedural Terminology (CPT®) code set, copyright 2015 American Medical Association. All rights reserved. Where practical, AMA’s consumer friendly translation of the CPT descriptor was used. ProPublica has received permission from the AMA to use these codes on this site.

Read our methodology.