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Compare the published Medicare service mix of John Taylor Mackay, MD with clinicians in the same registry specialty: Family Medicine.

TALLAHASSEE, FL · Exact areaEdit location

2024 published service data · 86 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Hugh Vanlandingham, M.D.

Family Medicine · Tallahassee, FL

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
72%Service-mix similarityView profile →

Cody A Vanlandingham, M.D.

Family Medicine · Tallahassee, FL

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Injection of drug or substance under skin or into muscle (96372)
71%Service-mix similarityView profile →

Paul Frederick Hartsfield, M.D.

Family Medicine · Tallahassee, FL

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)
  • Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
70%Service-mix similarityView profile →

Thomas Austin Zorn, M.D.

Family Medicine · Tallahassee, FL

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)
  • Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
67%Service-mix similarityView profile →

Thomas Serio, M.D.

Family Medicine · Tallahassee, FL

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
65%Service-mix similarityView profile →

Remelda T. Saunders-Jones, MD

Family Medicine · Tallahassee, FL

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual alcohol misuse screening, 5 to 15 minutes (G0442)
59%Service-mix similarityView profile →

Marlisha T Edwards, M.D.

Family Medicine · Tallahassee, FL

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
55%Service-mix similarityView profile →

Patricia Hogan, M.D.

Family Medicine · Tallahassee, FL

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)
55%Service-mix similarityView profile →

Edwin Jonathan Perry, M.D.

Family Medicine · Tallahassee, FL

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual alcohol misuse screening, 5 to 15 minutes (G0442)
55%Service-mix similarityView profile →

Ashley Lane Janney, M.D.

Family Medicine · Tallahassee, FL

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Urinalysis, manual test (81002)
53%Service-mix similarityView profile →

Gary Winchester, M.D.

Family Medicine · Tallahassee, FL

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual alcohol misuse screening, 5 to 15 minutes (G0442)
53%Service-mix similarityView profile →

John L. Ness, M.D.

Family Medicine · Tallahassee, FL

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
52%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.