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 Veronica Nguyen, M.D. with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

WASHINGTON, DC · Exact areaEdit location

2024 published service data · 32 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Antoine N Finianos, M.D.

Specialty details in registry · Washington, DC

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
42%Service-mix similarityView profile →

Marc Justin Landsman, M.D.

Gastroenterology · Internal Medicine (CMS) · Washington, DC

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
40%Service-mix similarityView profile →

Yana George Najjar, M.D.

Hematology/Oncology · Internal Medicine (CMS) · Washington, DC

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
34%Service-mix similarityView profile →

Nicholas Daniel Tyau, MD

Internal Medicine (CMS) · Washington, DC

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
28%Service-mix similarityView profile →

Michael Dirks, M.D.

Neurosurgery (CMS) · Washington, DC

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
28%Service-mix similarityView profile →

Michael William Helbig, MD

Urology (CMS) · Washington, DC

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
16%Service-mix similarityView profile →

Auvni Patel, M.D.

Ophthalmology (CMS) · Washington, DC

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
16%Service-mix similarityView profile →

Arlen Brent Richard, M.D.

Ophthalmology (CMS) · Washington, DC

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
15%Service-mix similarityView profile →

Lily Nedda Tye Dastmalchi, DO

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Washington, DC

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
13%Service-mix similarityView profile →

Daniel Pierce, M.D.

Physical Medicine And Rehabilitation (CMS) · Washington, DC

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
13%Service-mix similarityView profile →

Jonathan Hayes Wills

Orthopedic Surgery (CMS) · Washington, DC

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
10%Service-mix similarityView profile →

Ivan Mendez-Escobar, M.D.

Internal Medicine (CMS) · Washington, DC

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
9%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.