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Compare the published Medicare service mix of James D. Mccallum, M.D. with clinicians in the same registry specialty: Endocrinology · Internal Medicine (CMS).

LA JOLLA, CA · Exact areaEdit location

2024 published service data · 11 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Matthew Levine, M.D

Endocrinology · Internal Medicine (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Injection of drug or substance under skin or into muscle (96372)
92%Service-mix similarityView profile →

Christopher W. Marx, M.D.

Endocrinology · Internal Medicine (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Injection of drug or substance under skin or into muscle (96372)
91%Service-mix similarityView profile →

Liliana Uribe-Bruce, M.D.

Endocrinology (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Injection of drug or substance under skin or into muscle (96372)
84%Service-mix similarityView profile →

Megan Elizabeth Mcgarvey, M.D.

Endocrinology (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Injection of drug or substance under skin or into muscle (96372)
84%Service-mix similarityView profile →

Amy Sheree Chang, MD

Endocrinology · Internal Medicine (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Injection of drug or substance under skin or into muscle (96372)
82%Service-mix similarityView profile →

Mba Uzoma Udo Mba, M.D., PH.D.

Endocrinology · Geriatric Medicine · Internal Medicine (CMS) · La Jolla, 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 drug or substance under skin or into muscle (96372)
  • Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)
77%Service-mix similarityView profile →

Darius Alexander Schneider, MD, PHD

Endocrinology · Internal Medicine (CMS) · La Jolla, 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 drug or substance under skin or into muscle (96372)
  • Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)
68%Service-mix similarityView profile →

Farahnaz Shireen Joarder, M.D.

Endocrinology · Internal Medicine (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
59%Service-mix similarityView profile →

Heather Leigh Hofflich, DO

Internal Medicine (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
58%Service-mix similarityView profile →

Sylvie Pham, MD

Endocrinology (CMS) · La Jolla, 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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Injection of drug or substance under skin or into muscle (96372)
57%Service-mix similarityView profile →

Athena Philis-Tsimikas, M.D.

Endocrinology · Internal Medicine (CMS) · La Jolla, 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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
23%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.