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Compare the published Medicare service mix of Douglas W. Puryear, M.D. with clinicians in the same registry specialty: Pulmonary Disease · Sleep Medicine (CMS).

VA · Exact areaEdit location

2024 published service data · 27 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael Bruce Polsky, M.D.

Pulmonary Disease · Sleep Medicine (CMS) · North Chesterfield, VA

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)
  • Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)
  • Sleep study including heart rate, breathing, and sleep time (95800)
89%Service-mix similarityView profile →

Cecilia L Santos, MD

Internal Medicine · Sleep Medicine (CMS) · Richmond, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
71%Service-mix similarityView profile →

Jessica Amy Riggs, M.D.

Pulmonary Disease · Sleep Medicine (CMS) · Leesburg, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
70%Service-mix similarityView profile →

Tajender Singh Vasu, MD

Pulmonary Disease · Sleep Medicine (CMS) · Falls Church, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
70%Service-mix similarityView profile →

Hwan Kim, M.D.

Internal Medicine (CMS) · Leesburg, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
69%Service-mix similarityView profile →

Swathi V. Charya

Hospitalist · Internal Medicine · Sleep Medicine (CMS) · Leesburg, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
68%Service-mix similarityView profile →

Amit Vinod Patel, MD

Critical Care (Intensivists) · Pulmonary Disease · Sleep Medicine (CMS) · Falls Church, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
68%Service-mix similarityView profile →

Naim S Bashir

Sleep Medicine (CMS) · Mechanicsville, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
66%Service-mix similarityView profile →

Charu Sabharwal, MD

Internal Medicine · Sleep Medicine (CMS) · Leesburg, VA

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)
  • Sleep study in sleep lab (6 years or older) (95810)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
65%Service-mix similarityView profile →

Eric M. Davis, MD

Internal Medicine · Pulmonary Disease · Sleep Medicine (CMS) · Charlottesville, VA

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)
  • Sleep study including heart rate, breathing, and sleep time (95800)
  • Sleep study in sleep lab (6 years or older) (95810)
65%Service-mix similarityView profile →

David A Calhoun, MD

Sleep Medicine (CMS) · Charlottesville, VA

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)
  • Sleep study in sleep lab (6 years or older) (95810)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
63%Service-mix similarityView profile →

William Robert Hammond, M. D.

Critical Care (Intensivists) · Pulmonary Disease · Sleep Medicine (CMS) · Charlottesville, VA

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)
  • Sleep study in sleep lab (6 years or older) (95810)
  • Sleep study in sleep lab with continuous airway pressure (6 years or older) (95811)
61%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.