HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Thomas B. Leahey, D.O. with clinicians in the same registry specialty: Internal Medicine · Rheumatology (CMS).

OK · Exact areaEdit location

2024 published service data · 49 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Mark Allen Hulsey, M.D.

Specialty details in registry · Edmond, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Blood test, comprehensive group of blood chemicals (80053)
  • Insertion of needle into vein for collection of blood sample (36415)
65%Service-mix similarityView profile →

Craig W Carson, M.D.

Internal Medicine · Rheumatology (CMS) · Edmond, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Blood test, comprehensive group of blood chemicals (80053)
  • Insertion of needle into vein for collection of blood sample (36415)
57%Service-mix similarityView profile →

Ana Kumar, M.D.

Family Practice · Rheumatology (CMS) · Edmond, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Blood test, comprehensive group of blood chemicals (80053)
  • Insertion of needle into vein for collection of blood sample (36415)
57%Service-mix similarityView profile →

Ernesto N Levy, M.D.

Rheumatology (CMS) · Oklahoma City, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Blood test, comprehensive group of blood chemicals (80053)
  • Insertion of needle into vein for collection of blood sample (36415)
56%Service-mix similarityView profile →

Linda Ann Zacharias, MD

Internal Medicine · Rheumatology (CMS) · Edmond, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Blood test, comprehensive group of blood chemicals (80053)
  • Insertion of needle into vein for collection of blood sample (36415)
49%Service-mix similarityView profile →

Joel Benjamin Horton, M.D.

Rheumatology (CMS) · Tulsa, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
43%Service-mix similarityView profile →

John Goetzinger, M.D.

Rheumatology (CMS) · Oklahoma City, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
38%Service-mix similarityView profile →

Michael B Pickrell, MD

Internal Medicine · Rheumatology (CMS) · Oklahoma City, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
38%Service-mix similarityView profile →

Christine Ellen Codding, MD

Internal Medicine · Rheumatology (CMS) · Oklahoma City, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
37%Service-mix similarityView profile →

Tommie Simon, M.D.

Rheumatology (CMS) · Lawton, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
37%Service-mix similarityView profile →

Amanda Titus, MD

Rheumatology (CMS) · Oklahoma City, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
37%Service-mix similarityView profile →

William Surbeck, M.D.

Rheumatology (CMS) · Tulsa, OK

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
36%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.