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 Roman Groisberg, MD with clinicians in the same registry specialty: Internal Medicine · Medical Oncology (CMS).

NEW BRUNSWICK, NJ · Exact areaEdit location

2024 published service data · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Sanjay Goel, MD

Hematology · Internal Medicine · Medical Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
81%Service-mix similarityView profile →

Dale Schaar

Medical Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
65%Service-mix similarityView profile →

Missak Haigentz, MD

Medical Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
65%Service-mix similarityView profile →

Mridula A George

Hematology · Internal Medicine (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
61%Service-mix similarityView profile →

Tina M Mayer, MD

Medical Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
59%Service-mix similarityView profile →

Deborah L Toppmeyer

Internal Medicine · Medical Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
57%Service-mix similarityView profile →

Kevin Andrew David, M.D.

Hematology/Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • 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 →

Biren P Saraiya, M.D.

Hematology · Internal Medicine · Medical Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
55%Service-mix similarityView profile →

Sivraj Muralikrishnan, MD

Hematology · Medical Oncology (CMS) · New Brunswick, NJ

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
53%Service-mix similarityView profile →

Patrick M Boland, MD

Hematology · Internal Medicine (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
51%Service-mix similarityView profile →

Morana Vojnic, M.D.

Hospitalist · Internal Medicine (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
49%Service-mix similarityView profile →

Sarah Weiss, M.D.

Hematology/Oncology (CMS) · New Brunswick, NJ

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • 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 →
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.