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Compare the published Medicare service mix of Donald Whitney Barber, MD with clinicians in the same registry specialty: Internal Medicine.

GLENDALE, CA · Exact areaEdit location

2024 published service data · 56 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

James Ira Wallstrom, MD

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Annual depression screening, 5 to 15 minutes (G0444)
88%Service-mix similarityView profile →

Victoria Ann Altree, M.D.

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Annual depression screening, 5 to 15 minutes (G0444)
78%Service-mix similarityView profile →

Rodolfo Baguinguito Protacio, M.D.

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
74%Service-mix similarityView profile →

Vince Patrick Cacho, MD

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
71%Service-mix similarityView profile →

Nirupa Vignarajan, M.D.

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Annual depression screening, 5 to 15 minutes (G0444)
66%Service-mix similarityView profile →

Hanriet Minasian, D.O.

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
66%Service-mix similarityView profile →

Helen Mitropoulos, MD

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
64%Service-mix similarityView profile →

Ruzanna Alexanian, M.D.

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
62%Service-mix similarityView profile →

Lim L Taw, M.D.

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Annual depression screening, 5 to 15 minutes (G0444)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
61%Service-mix similarityView profile →

Amalia A Armenta, MD

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • 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)
59%Service-mix similarityView profile →

Alen Mirzaian, M.D.

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Annual depression screening, 5 to 15 minutes (G0444)
58%Service-mix similarityView profile →

Gregory Jerold Beeve, MD

Internal Medicine · Glendale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Annual depression screening, 5 to 15 minutes (G0444)
58%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.