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Treatment Tracker

PATHOLOGY AND LABORATORY

Thyroxine (thyroid chemical) measurement

Service Code: 84439

Total Paid

$56,882,344

Total Times Performed (or Units)

4,409,675

Rank Among All Services

88

Includes both office and facility visits.

Top States

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


Times Performed State
466,642 California
430,366 Florida
418,897 New Jersey
385,383 Texas
364,523 New York
284,808 North Carolina
165,369 Alabama
163,001 Michigan
160,766 Ohio
144,957 Pennsylvania
123,672 Georgia
112,092 Arizona
102,323 Tennessee
96,882 Illinois
80,919 Maryland
79,455 Virginia
73,701 Kansas
71,654 Missouri
60,202 Washington
49,259 Indiana
46,993 Massachusetts
42,887 Connecticut
38,893 Kentucky
38,036 Wisconsin
37,355 Oklahoma
36,957 Oregon
35,408 South Carolina
32,041 Nevada
29,508 Colorado
26,286 Arkansas
25,264 Nebraska
20,346 Louisiana
17,334 Hawaii
16,808 Iowa
16,336 New Mexico
14,626 Utah
14,407 Minnesota
14,271 South Dakota
14,047 West Virginia
12,955 Mississippi
10,369 Puerto Rico
8,190 Idaho
6,479 Rhode Island
6,273 Maine
4,722 North Dakota
2,169 Montana
1,831 Wyoming
1,279 Washington, DC
1,126 New Hampshire
1,053 Virgin Islands
310 Vermont
149 Guam
96 Alaska

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

Clinical Laboratory

7%

of this provider's 1,306,778 patients got this service
136,457

Performed in an office

7%

of this provider's 1,306,778 patients got this service
1.4
QUEST DIAGNOSTICS INCORPORATED

TETERBORO, N.J. 07608

Clinical Laboratory

18%

of this provider's 525,451 patients got this service
134,750

Performed in an office

18%

of this provider's 525,451 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA HOLDINGS

Raritan, N.J. 08869

Clinical Laboratory

11%

of this provider's 696,585 patients got this service
105,113

Performed in an office

11%

of this provider's 696,585 patients got this service
1.4
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

TAMPA, Fla. 33617

Clinical Laboratory

11%

of this provider's 627,606 patients got this service
92,970

Performed in an office

11%

of this provider's 627,606 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA HOLDINGS

Birmingham, Ala. 35233

Clinical Laboratory

9%

of this provider's 669,554 patients got this service
82,180

Performed in an office

9%

of this provider's 669,554 patients got this service
1.4
BIO-REFERENCE LABORATORIES, INC.

Elmwood Park, N.J. 07407

Clinical Laboratory

16%

of this provider's 326,629 patients got this service
78,754

Performed in an office

16%

of this provider's 326,629 patients got this service
1.5
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

Tucker, Ga. 30084

Clinical Laboratory

10%

of this provider's 557,363 patients got this service
76,953

Performed in an office

10%

of this provider's 557,363 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA HOLDINGS

Dublin, Ohio 43016

Clinical Laboratory

9%

of this provider's 604,319 patients got this service
75,302

Performed in an office

9%

of this provider's 604,319 patients got this service
1.3
UNILAB CORPORATION

WEST HILLS, Calif. 91304

Clinical Laboratory

12%

of this provider's 416,737 patients got this service
68,889

Performed in an office

12%

of this provider's 416,737 patients got this service
1.4
SOLSTAS LAB PARTNERS GROUP, LLC

Greensboro, N.C. 27410

Clinical Laboratory

8%

of this provider's 596,770 patients got this service
64,335

Performed in an office

8%

of this provider's 596,770 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA

San Diego, Calif. 92128

Clinical Laboratory

11%

of this provider's 372,538 patients got this service
57,091

Performed in an office

11%

of this provider's 372,538 patients got this service
1.3
SHIEL MEDICAL LABORATORY, INC

Brooklyn, N.Y. 11205

Clinical Laboratory

26%

of this provider's 141,534 patients got this service
55,707

Performed in an office

26%

of this provider's 141,534 patients got this service
1.5
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

Horsham, Pa. 19044

Clinical Laboratory

11%

of this provider's 377,772 patients got this service
54,168

Performed in an office

11%

of this provider's 377,772 patients got this service
1.3
CLINICAL PATHOLOGY LABORATORIES, INC.

Austin, Tex. 78754

Clinical Laboratory

9%

of this provider's 459,687 patients got this service
53,140

Performed in an office

9%

of this provider's 459,687 patients got this service
1.3
LABORATORY CORPORATION OF AMERICA

TAMPA, Fla. 33607

Clinical Laboratory

8%

of this provider's 444,355 patients got this service
50,135

Performed in an office

8%

of this provider's 444,355 patients got this service
1.3
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

IRVING, Tex. 75063

Clinical Laboratory

9%

of this provider's 390,265 patients got this service
47,220

Performed in an office

9%

of this provider's 390,265 patients got this service
1.3
LABONE INC

LENEXA, Kan. 66219

Clinical Laboratory

10%

of this provider's 353,206 patients got this service
46,331

Performed in an office

10%

of this provider's 353,206 patients got this service
1.3
SONORA QUEST LABORATORIES, LLC.

Tempe, Ariz. 85281

Clinical Laboratory

12%

of this provider's 279,312 patients got this service
43,319

Performed in an office

12%

of this provider's 279,312 patients got this service
1.3
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

Houston, Tex. 77072

Clinical Laboratory

13%

of this provider's 247,005 patients got this service
43,139

Performed in an office

13%

of this provider's 247,005 patients got this service
1.3
QUEST DIAGNOSTICS INCORPORATED MD

Baltimore, Md. 21227

Clinical Laboratory

11%

of this provider's 289,568 patients got this service
41,522

Performed in an office

11%

of this provider's 289,568 patients got this service
1.3
UNILAB CORPORATION

SACRAMENTO, Calif. 95834

Clinical Laboratory

11%

of this provider's 288,243 patients got this service
41,268

Performed in an office

11%

of this provider's 288,243 patients got this service
1.3
QUEST DIAGNOSTICS INCORPORATED MI

Auburn Hills, Mich. 48326

Clinical Laboratory

13%

of this provider's 231,681 patients got this service
40,415

Performed in an office

13%

of this provider's 231,681 patients got this service
1.3
QUEST DIAGNOSTICS CLINICAL LABORATORIES INC

MIRAMAR, Fla. 33025

Clinical Laboratory

13%

of this provider's 228,036 patients got this service
40,387

Performed in an office

13%

of this provider's 228,036 patients got this service
1.4
LABORATORY CORPORATION OF AMERICA

Houston, Tex. 77040

Clinical Laboratory

10%

of this provider's 281,374 patients got this service
38,465

Performed in an office

10%

of this provider's 281,374 patients got this service
1.4
QUEST DIAGNOSTICS LLC IL

WOOD DALE, Ill. 60191

Clinical Laboratory

11%

of this provider's 278,294 patients got this service
37,928

Performed in an office

11%

of this provider's 278,294 patients got this service
1.3
LABORATORY CORPORATION OF AMERICA

Dallas, Tex. 75230

Clinical Laboratory

7%

of this provider's 337,196 patients got this service
33,483

Performed in an office

7%

of this provider's 337,196 patients got this service
1.3
LABORATORY CORPORTION OF AMERICA

Phoenix, Ariz. 85040

Clinical Laboratory

11%

of this provider's 232,979 patients got this service
33,139

Performed in an office

11%

of this provider's 232,979 patients got this service
1.3
HEALTH DIAGNOSTIC LABORATORY, INCORPORATED

Richmond, Va. 23219

Clinical Laboratory

18%

of this provider's 147,691 patients got this service
32,404

Performed in an office

18%

of this provider's 147,691 patients got this service
1.3
SUNRISE MEDICAL LABORATORIES, INC.

Hicksville, N.Y. 11801

Clinical Laboratory

16%

of this provider's 123,061 patients got this service
30,130

Performed in an office

16%

of this provider's 123,061 patients got this service
1.5
ENZO CLINICAL LABS, INC.

Farmingdale, N.Y. 11735

Clinical Laboratory

24%

of this provider's 73,286 patients got this service
26,262

Performed in an office

24%

of this provider's 73,286 patients got this service
1.5

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 2013 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.