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Compare the published Medicare service mix of Gregory Leon Umphrey, M.D. with clinicians in the same registry specialty: Physical Medicine And Rehabilitation (CMS).

SCOTTSDALE, AZ · Exact areaEdit location

2024 published service data · 19 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Christopher Thuc Ha, DO

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • Ultrasonic guidance for needle placement (76942)
  • Injection of trigger points, 1-2 muscles (20552)
78%Service-mix similarityView profile →

Bryan K Ganter, M.D.

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • Ultrasonic guidance for needle placement (76942)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
71%Service-mix similarityView profile →

Matthew A Butters, M.D.

Specialty details in registry · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
58%Service-mix similarityView profile →

Nandita Sabnis Keole, MD

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
53%Service-mix similarityView profile →

Ibrahim Asim Aksoy, M.D.

Specialty details in registry · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
50%Service-mix similarityView profile →

James Kellershabrokh, D.O.

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
49%Service-mix similarityView profile →

Cameron Forbes, MD

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
44%Service-mix similarityView profile →

Sally Alcott, M.D.

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
43%Service-mix similarityView profile →

Harvinder Singh Deogun, MD

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • Injection of trigger points, 1-2 muscles (20552)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
43%Service-mix similarityView profile →

Paul R Overdorf, D.O.

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
41%Service-mix similarityView profile →

Jacob Rohrs, M.D.

Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)
  • Ultrasonic guidance for needle placement (76942)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
39%Service-mix similarityView profile →

Allan L Rowley, M.D.

Interventional Pain Management · Physical Medicine And Rehabilitation (CMS) · Scottsdale, AZ

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
38%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.