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 Gregory Kenneth Suelzle, MD with clinicians in the same registry specialty: Anesthesiology · Interventional Pain Management (CMS).

CA · Exact areaEdit location

2024 published service data · 145 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Matthew S Root, DO

Interventional Pain Management · Pain Management · Physical Medicine And Rehabilitation (CMS) · Sherman Oaks, CA

Shared published services
2 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)
  • Injection of trigger points, 3 or more muscles (20553)
63%Service-mix similarityView profile →

Grant P. Williams, M.D.

Anesthesiology · Interventional Pain Management · Pain Management (CMS) · Glendale, CA

Shared published services
1 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)
58%Service-mix similarityView profile →

Clifford A. Bernstein, M.D.

Specialty details in registry · Huntington Beach, CA

Shared published services
1 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)
58%Service-mix similarityView profile →

Tim Ulrich Leier, MD

Pain Management (CMS) · Rancho Mirage, CA

Shared published services
1 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)
58%Service-mix similarityView profile →

Sam Ahdab, M.D.

Internal Medicine · Pain Management (CMS) · West Covina, CA

Shared published services
1 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)
58%Service-mix similarityView profile →

Brandon Son Truong Nguyen, DO

Anesthesiology · Interventional Pain Management (CMS) · San Francisco, CA

Shared published services
2 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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
56%Service-mix similarityView profile →

Trishaben C Patel, MD

Interventional Pain Management (CMS) · Anaheim, CA

Shared published services
2 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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
54%Service-mix similarityView profile →

Kasra Maasumi, M.D.

Neurology · Pain Management (CMS) · Rancho Santa Margarita, CA

Shared published services
2 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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
50%Service-mix similarityView profile →

Joseph T Ho, M.D.

Anesthesiology · Interventional Pain Management · Pain Management (CMS) · Fullerton, CA

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)
  • Injection of trigger points, 3 or more muscles (20553)
  • Aspiration and/or injection of fluid from large joint (20610)
50%Service-mix similarityView profile →

Nathaniel Gamsky, MD

Anesthesiology · Interventional Pain Management (CMS) · Pleasant Hill, CA

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)
  • Injection of anesthetic agent and/or steroid into other nerve or branch (64450)
  • Injection of trigger points, 3 or more muscles (20553)
48%Service-mix similarityView profile →

Chiwai E Chan, D.O.

Interventional Pain Management (CMS) · Fountain Valley, CA

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)
  • Injection of trigger points, 3 or more muscles (20553)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
47%Service-mix similarityView profile →

Dilangani Ratnayake, MD

Anesthesiology · Interventional Pain Management (CMS) · Palm Desert, CA

Shared published services
1 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)
46%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.