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 Alexandra Rooney, MD 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
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
66%Service-mix similarityView profile →

Eric Lowell Davidson, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Anesthesia for retinal surgery (00145)
  • Anesthesia for lens surgery (00142)
61%Service-mix similarityView profile →

Dan Varonin, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
60%Service-mix similarityView profile →

Ivan Vladimir Colaizzi, M.D.

Anesthesiology · Pittsburgh, PA

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

Brianna Grace Rea, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Injection of anesthetic agent into thoracic vertebra using imaging guidance, single site (64461)
56%Service-mix similarityView profile →

Beverly Anne Pearce-Smith, MD

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Injection of anesthetic agent into thoracic vertebra using imaging guidance, single site (64461)
55%Service-mix similarityView profile →

Andrew Phan, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Anesthesia for retinal surgery (00145)
54%Service-mix similarityView profile →

Mario Ignacio Montoya, M.D.

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Injection of anesthetic agent into thoracic vertebra using imaging guidance, single site (64461)
53%Service-mix similarityView profile →

Lloyd Alberto Barrera Allen, MD

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
52%Service-mix similarityView profile →

Nicole Verdecchia

Anesthesiology · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Anesthesia for lens surgery (00142)
51%Service-mix similarityView profile →

Zachary Edward Ligus, MD

Anesthesiology · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for retinal surgery (00145)
  • Anesthesia for lens surgery (00142)
49%Service-mix similarityView profile →

Luca La Colla

Anesthesiology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Injection of anesthetic agent into thoracic vertebra using imaging guidance, single site (64461)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
48%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.