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Compare the published Medicare service mix of Peter Ira Margolis, M.D. with clinicians in the same registry specialty: Internal Medicine.

THOUSAND OAKS, CA · Exact areaEdit location

2024 published service data · 33 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Francoise Giao Phuong Menteer, MD

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
58%Service-mix similarityView profile →

Robert A Gold, MD

Internal Medicine · Thousand Oaks, CA

Shared published services
2 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)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
57%Service-mix similarityView profile →

Nazanin Izadpanah Gunn, M.D., M.H.A.

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
56%Service-mix similarityView profile →

Corinna Mosher, M.D.

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
53%Service-mix similarityView profile →

Steven P Mccarthy, M.D.

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
52%Service-mix similarityView profile →

Michelle Kelley, M.D.

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
48%Service-mix similarityView profile →

Arpna Patel, MD

Internal Medicine · Thousand Oaks, CA

Shared published services
1 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)
46%Service-mix similarityView profile →

Nithyalakshmi Nambiar

Internal Medicine · Thousand Oaks, CA

Shared published services
2 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)
43%Service-mix similarityView profile →

Neema Heivand

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
40%Service-mix similarityView profile →

James A Modlinger, M.D.

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
34%Service-mix similarityView profile →

Maneesh Singhal, M.D.

Internal Medicine · Thousand Oaks, 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)
  • Insertion of needle into vein for collection of blood sample (36415)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
34%Service-mix similarityView profile →

Russell Hines, M.D.

Internal Medicine · Thousand Oaks, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
31%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.