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Compare the published Medicare service mix of Ivan Vladimir Colaizzi, M.D. with clinicians in the same registry specialty: Anesthesiology.

PITTSBURGH, PA · Exact areaEdit location

2024 published service data · 213 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Douglas Bentley, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
78%Service-mix similarityView profile →

Lloyd Alberto Barrera Allen, MD

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
72%Service-mix similarityView profile →

Cecilia Kurnita Leatham, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
61%Service-mix similarityView profile →

Touichi Kawabe

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
59%Service-mix similarityView profile →

Alexandra Rooney, MD

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
59%Service-mix similarityView profile →

David L Greenblatt, MD

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
58%Service-mix similarityView profile →

Tyson D Gillmen, DO

Anesthesiology · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for procedure for total knee joint replacement (01402)
53%Service-mix similarityView profile →

Riccardo Marinelli, MD

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
53%Service-mix similarityView profile →

Dan Varonin, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
53%Service-mix similarityView profile →

Gregory Shaw

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
49%Service-mix similarityView profile →

Michael Thomas Maromonte, DO

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
47%Service-mix similarityView profile →

Kelly T Shannon, MD

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
46%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.