Treatment Tracker

The Doctors and Services in Medicare Part B

PATHOLOGY AND LABORATORY

Thyroxine (thyroid chemical) measurement

Service Code: 84439, Service Type: Medical

Total Paid

$125,501.68

Total Times Performed (or Units)

4,809,031

Rank Among All Services

90

Includes both office and facility visits.

Services by State

Below are the states in which this service was billed. Click a state for top providers there.


Times Performed State
527,990 California
513,396 Florida
499,135 New Jersey
432,165 Texas
358,573 New York
343,004 North Carolina
196,462 Alabama
159,778 Ohio
142,899 Arizona
138,229 Pennsylvania
127,560 Georgia
122,776 Tennessee
117,953 Illinois
115,885 Michigan
85,013 Maryland
78,254 Kansas
72,227 Virginia
65,603 Massachusetts
63,656 Washington
49,265 Missouri
47,047 Indiana
42,390 South Carolina
40,638 Oklahoma
40,184 Kentucky
36,842 Oregon
36,625 Connecticut
34,456 Wisconsin
34,252 Nevada
32,207 Colorado
28,275 Arkansas
28,244 Louisiana
26,372 Nebraska
20,012 Iowa
19,372 Hawaii
18,756 Mississippi
15,669 Utah
14,887 New Mexico
13,501 Minnesota
11,101 West Virginia
9,528 Idaho
9,329 South Dakota
8,576 Rhode Island
7,098 Maine
4,261 North Dakota
2,241 Wyoming
2,007 Montana
1,419 New Hampshire
795 Washington, DC
357 Vermont
322 Alaska
53 Delaware

Top Providers

Below are the top 30 providers who performed this service most often. A provider’s name may appear twice on this list if he/she performs this service in both an office setting and in a facility. Medicare reimburses differently based on place of service and breaks the data out accordingly. Sorting is limited to the top 30 overall providers.


Provider Name Times Performed (or Units) % of Patients Unique Visits Per Patient
LABORATORY CORPORATION OF AMERICA HOLDINGS

BURLINGTON, N.C. 27215

Laboratories, Clinical Medical Laboratory

9%

of this provider's 1,491,360 patients got this service
196,431

Performed in an office

9%

of this provider's 1,491,360 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA HOLDINGS

RARITAN, N.J. 08869

Laboratories, Clinical Medical Laboratory

14%

of this provider's 831,784 patients got this service
160,852

Performed in an office

14%

of this provider's 831,784 patients got this service
1.4
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

TAMPA, Fla. 33617

Laboratories, Clinical Medical Laboratory

13%

of this provider's 701,126 patients got this service
130,442

Performed in an office

13%

of this provider's 701,126 patients got this service
1.4
QUEST DIAGNOSTICS INCORPORATED

TETERBORO, N.J. 07608

Laboratories, Clinical Medical Laboratory

20%

of this provider's 448,515 patients got this service
128,099

Performed in an office

20%

of this provider's 448,515 patients got this service
1.5
LABORATORY CORPORATION OF AMERICA HOLDINGS

BIRMINGHAM, Ala. 35233

Laboratories, Clinical Medical Laboratory

11%

of this provider's 684,893 patients got this service
100,255

Performed in an office

11%

of this provider's 684,893 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA HOLDINGS

DUBLIN, Ohio 43016

Laboratories, Clinical Medical Laboratory

11%

of this provider's 607,320 patients got this service
94,433

Performed in an office

11%

of this provider's 607,320 patients got this service
1.4
UNILAB CORPORATION

WEST HILLS, Calif. 91304

Laboratories, Clinical Medical Laboratory

14%

of this provider's 485,682 patients got this service
89,155

Performed in an office

14%

of this provider's 485,682 patients got this service
1.4
BIO-REFERENCE LABORATORIES, INC.

ELMWOOD PARK, N.J. 07407

Laboratories, Clinical Medical Laboratory

16%

of this provider's 361,248 patients got this service
84,771

Performed in an office

16%

of this provider's 361,248 patients got this service
1.5
LABORATORY CORPORATION OF AMERICA

SAN DIEGO, Calif. 92128

Laboratories, Clinical Medical Laboratory

14%

of this provider's 418,130 patients got this service
75,931

Performed in an office

14%

of this provider's 418,130 patients got this service
1.3
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

TUCKER, Ga. 30084

Laboratories, Clinical Medical Laboratory

11%

of this provider's 494,683 patients got this service
75,348

Performed in an office

11%

of this provider's 494,683 patients got this service
1.4
CLINICAL PATHOLOGY LABORATORIES, INC.

AUSTIN, Tex. 78754

Laboratories, Clinical Medical Laboratory

10%

of this provider's 468,459 patients got this service
65,162

Performed in an office

10%

of this provider's 468,459 patients got this service
1.3
QUEST DIAGNOSTICS LLC IL

WOOD DALE, Ill. 60191

Laboratories, Clinical Medical Laboratory

11%

of this provider's 427,860 patients got this service
61,105

Performed in an office

11%

of this provider's 427,860 patients got this service
1.3
LABORATORY CORPORATION OF AMERICA

DALLAS, Tex. 75230

Laboratories, Clinical Medical Laboratory

11%

of this provider's 426,714 patients got this service
60,082

Performed in an office

11%

of this provider's 426,714 patients got this service
1.3
SOLSTAS LAB PARTNERS GROUP, LLC

GREENSBORO, N.C. 27410

Laboratories, Clinical Medical Laboratory

9%

of this provider's 470,242 patients got this service
58,886

Performed in an office

9%

of this provider's 470,242 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA

TAMPA, Fla. 33607

Laboratories, Clinical Medical Laboratory

11%

of this provider's 396,965 patients got this service
57,793

Performed in an office

11%

of this provider's 396,965 patients got this service
1.4
SONORA QUEST LABORATORIES, LLC.

TEMPE, Ariz. 85281

Laboratories, Clinical Medical Laboratory

13%

of this provider's 317,090 patients got this service
56,723

Performed in an office

13%

of this provider's 317,090 patients got this service
1.3
SHIEL HOLDINGS LLC

BROOKLYN, N.Y. 11205

Laboratories, Clinical Medical Laboratory

27%

of this provider's 138,713 patients got this service
54,946

Performed in an office

27%

of this provider's 138,713 patients got this service
1.5
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

HORSHAM, Pa. 19044

Laboratories, Clinical Medical Laboratory

11%

of this provider's 345,147 patients got this service
53,233

Performed in an office

11%

of this provider's 345,147 patients got this service
1.3
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

MIRAMAR, Fla. 33025

Laboratories, Clinical Medical Laboratory

15%

of this provider's 242,008 patients got this service
52,466

Performed in an office

15%

of this provider's 242,008 patients got this service
1.4
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

IRVING, Tex. 75063

Laboratories, Clinical Medical Laboratory

10%

of this provider's 370,247 patients got this service
51,819

Performed in an office

10%

of this provider's 370,247 patients got this service
1.4
UNILAB CORPORATION

SACRAMENTO, Calif. 95834

Laboratories, Clinical Medical Laboratory

12%

of this provider's 300,702 patients got this service
47,704

Performed in an office

12%

of this provider's 300,702 patients got this service
1.3
LABORATORY CORPORATION OF AMERICA

PHOENIX, Ariz. 85040

Laboratories, Clinical Medical Laboratory

14%

of this provider's 261,848 patients got this service
47,525

Performed in an office

14%

of this provider's 261,848 patients got this service
1.3
LABONE LLC

LENEXA, Kan. 66219

Laboratories, Clinical Medical Laboratory

10%

of this provider's 361,166 patients got this service
46,972

Performed in an office

10%

of this provider's 361,166 patients got this service
1.3
QUEST DIAGNOSTICS INCORPORATED MD

BALTIMORE, Md. 21227

Laboratories, Clinical Medical Laboratory

12%

of this provider's 276,049 patients got this service
45,062

Performed in an office

12%

of this provider's 276,049 patients got this service
1.4
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

HOUSTON, Tex. 77072

Laboratories, Clinical Medical Laboratory

14%

of this provider's 228,806 patients got this service
44,631

Performed in an office

14%

of this provider's 228,806 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA

HOUSTON, Tex. 77040

Laboratories, Clinical Medical Laboratory

12%

of this provider's 252,794 patients got this service
41,774

Performed in an office

12%

of this provider's 252,794 patients got this service
1.4
ATHEROTECH, INC.

BIRMINGHAM, Ala. 35211

Laboratories, Clinical Medical Laboratory

27%

of this provider's 103,570 patients got this service
33,869

Performed in an office

27%

of this provider's 103,570 patients got this service
1.2
SUNRISE MEDICAL LABORATORIES, INC.

HICKSVILLE, N.Y. 11801

Laboratories, Clinical Medical Laboratory

14%

of this provider's 155,887 patients got this service
31,115

Performed in an office

14%

of this provider's 155,887 patients got this service
1.4
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

SYOSSET, N.Y. 11791

Laboratories, Clinical Medical Laboratory

16%

of this provider's 126,512 patients got this service
28,751

Performed in an office

16%

of this provider's 126,512 patients got this service
1.4
QUEST DIAGNOSTICS INCORPORATED

LAS VEGAS, Nev. 89119

Laboratories, Clinical Medical Laboratory

21%

of this provider's 94,072 patients got this service
27,868

Performed in an office

21%

of this provider's 94,072 patients got this service
1.4

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.

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