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 Amer H. Khan, MD with clinicians in the same registry specialty: Neuropsychiatry · Sleep Medicine (CMS).

CA · Exact areaEdit location

2024 published service data · 29 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Scott Jason Kutscher, M.D.

Neurology · Sleep Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study including heart rate, breathing, and sleep time (95800)
72%Service-mix similarityView profile →

Oliver Richard Sum-Ping, MD

Neurology · Sleep Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study including heart rate, breathing, and sleep time (95800)
67%Service-mix similarityView profile →

Ross F Liebman, M.D.

Sleep Medicine (CMS) · Sunnyvale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study in sleep lab (6 years or older) (95810)
67%Service-mix similarityView profile →

Angela Anagnos, M.D.

Neurology (CMS) · San Jose, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Collection and interpretation of physical parameters stored in computers and/or transmitted by the patient and/or caregiver to qualified health care professional, requiring 30 minutes or more, per 30 days (99091)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
66%Service-mix similarityView profile →

Haramandeep Singh, MD

Psychiatry · Sleep Medicine (CMS) · San Ramon, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study including heart rate, breathing, and sleep time (95800)
64%Service-mix similarityView profile →

Nevin Arora, MD

Psychiatry · Sleep Medicine (CMS) · Vista, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study in sleep lab (6 years or older) (95810)
63%Service-mix similarityView profile →

Gregory T. Ackroyd, M.D.

Neurology · Sleep Medicine (CMS) · Santa Rosa, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study in sleep lab (6 years or older) (95810)
60%Service-mix similarityView profile →

Tony Masri, MD

Specialty details in registry · Los Gatos, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Sleep study in sleep lab (6 years or older) (95810)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
59%Service-mix similarityView profile →

Rochelle Zak, M.D.

Neurology · Sleep Medicine (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study including heart rate, breathing, and sleep time (95800)
58%Service-mix similarityView profile →

Matt Travis Bianchi, MD PHD

Neurology · Sleep Medicine (CMS) · Palo Alto, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
58%Service-mix similarityView profile →

Lydia Maria Wytrzes, M.D.

Neurology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study in sleep lab (6 years or older) (95810)
57%Service-mix similarityView profile →

Michelle Marie Primeau, M.D.

Sleep Medicine (CMS) · Sunnyvale, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Sleep study in sleep lab (6 years or older) (95810)
57%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.