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 Andrew Charles Rubens, M.D. with clinicians in the same registry specialty: Anesthesiology (CMS).

BOSTON, MA · Exact areaEdit location

2024 published service data · 20 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael Christopher Lubrano, M.D., M.P.H.

Anesthesiology · Critical Care (Intensivists) (CMS) · Boston, MA

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)
  • Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance (27096)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
51%Service-mix similarityView profile →

Galina Davidyuk, M.D., PH.D.

Anesthesiology (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
48%Service-mix similarityView profile →

Brenda Mariana Lee, M.D.

Anesthesiology (CMS) · Boston, MA

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)
  • Injection of trigger points, 3 or more muscles (20553)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
46%Service-mix similarityView profile →

Alexander James Kim, M.D.

Anesthesiology · Pain Management (CMS) · Boston, MA

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)
  • Injection of trigger points, 3 or more muscles (20553)
  • Injection of anesthetic agent and/or steroid into upper neck and back of head nerve (64405)
44%Service-mix similarityView profile →

Laura Muehl

Anesthesiology (CMS) · Boston, MA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
42%Service-mix similarityView profile →

Thomas T Simopoulos, M.D.

Anesthesiology (CMS) · Boston, MA

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)
  • Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance (27096)
  • Injection of substance into lower spine canal using imaging guidance (62323)
37%Service-mix similarityView profile →

Samuel Peter Ang, MD

Anesthesiology (CMS) · Boston, MA

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)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
35%Service-mix similarityView profile →

Shihab Ahmed, MBBS

Anesthesiology · Interventional Pain Management (CMS) · Boston, MA

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)
  • Injection of trigger points, 3 or more muscles (20553)
  • Injection of substance into lower spine canal using imaging guidance (62323)
34%Service-mix similarityView profile →

Gary Jay Brenner, MD PHD

Anesthesiology · Pain Management (CMS) · Boston, MA

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)
  • Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance (27096)
  • Injection of substance into lower spine canal using imaging guidance (62323)
32%Service-mix similarityView profile →

Maximilian Evan Hsia-Kiung, M.D.

Anesthesiology · Pain Management (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Injection of trigger points, 3 or more muscles (20553)
  • Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance (27096)
  • Injection of substance into lower spine canal using imaging guidance (62323)
30%Service-mix similarityView profile →

Ronnie Ibrahim, MD

Anesthesiology (CMS) · Boston, MA

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)
  • Injection of trigger points, 3 or more muscles (20553)
  • Injection of anesthetic or steroid into joint between lower spine and hip bone using imaging guidance (27096)
26%Service-mix similarityView profile →

Stefani Maya Schwartz

Anesthesiology · Pain Management (CMS) · Boston, MA

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)
  • Injection of trigger points, 3 or more muscles (20553)
  • Injection of substance into lower spine canal using imaging guidance (62323)
26%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.