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Compare the published Medicare service mix of Richard Jason Hartman, DO with clinicians in the same registry specialty: Pain Management (CMS).

CA · Exact areaEdit location

2024 published service data · 61 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Albert Lai, MD

Specialty details in registry · Placentia, 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)
  • Testing for presence of drug, read by direct observation (80305)
  • Injection of lower or sacral spine facet joint using imaging guidance, single level (64493)
87%Service-mix similarityView profile →

Kartic Rajput, M.D., PH.D.

Pain Management (CMS) · Stockton, 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 lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of substance into lower spine canal using imaging guidance (62323)
81%Service-mix similarityView profile →

George Pan, M.D.

Specialty details in registry · Los Angeles, 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)
  • Testing for presence of drug, read by direct observation (80305)
  • Injection of lower or sacral spine facet joint using imaging guidance, single level (64493)
80%Service-mix similarityView profile →

Kevin Wong, DO

Pain Management (CMS) · Palm Springs, 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 lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of substance into lower spine canal using imaging guidance (62323)
78%Service-mix similarityView profile →

Arthur D Zepeda, MD

Anesthesiology · 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 lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of substance into lower spine canal using imaging guidance (62323)
78%Service-mix similarityView profile →

Travis Patrick Martin, MD

Emergency Medicine (CMS) · Loma Linda, 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)
  • Testing for presence of drug, read by direct observation (80305)
  • Injection of lower or sacral spine facet joint using imaging guidance, single level (64493)
75%Service-mix similarityView profile →

Naveed Mameghani, M.D.

Anesthesiology · Pain Management (CMS) · Costa Mesa, 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 lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of substance into lower spine canal using imaging guidance (62323)
72%Service-mix similarityView profile →

Francis Michael Ferrante, MD

Anesthesiology (CMS) · Los Angeles, 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 lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of substance into lower spine canal using imaging guidance (62323)
70%Service-mix similarityView profile →

Kenneth Sterling Bradley, MD

Anesthesiology · Pain Management (CMS) · Torrance, 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)
  • Testing for presence of drug, read by direct observation (80305)
  • Injection of lower or sacral spine facet joint using imaging guidance, single level (64493)
68%Service-mix similarityView profile →

Masami Hattori, M.D.

Anesthesiology · Pain Management (CMS) · San Francisco, 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 lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of substance into lower spine canal using imaging guidance (62323)
67%Service-mix similarityView profile →

Daniel Philip Loder, MD

Specialty details in registry · Los Angeles, 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 lower or sacral spine facet joint using imaging guidance, single level (64493)
  • Injection of lower or sacral spine facet joint using imaging guidance, second level (64494)
66%Service-mix similarityView profile →

Kayvan D Haddadan, M.D.

Pain Management · Physical Medicine And Rehabilitation (CMS) · Sacramento, 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)
  • Testing for presence of drug, read by direct observation (80305)
  • Injection of lower or sacral spine facet joint using imaging guidance, single level (64493)
66%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.