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Compare the published Medicare service mix of Crystal Holt Hargrave, NP with clinicians in the same registry specialty: Nurse Practitioner (CMS).

WOODBRIDGE, VA · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 118 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Lisa Ann Sullivan, NP

Nurse Practitioner (CMS) · Fairfax, VA

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
85%Service-mix similarity~16.4 milesView profile →

Jonathan Alexander Messing, ACNP-BC

Nurse Practitioner (CMS) · Falls Church, VA

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
84%Service-mix similarity~15.3 milesView profile →

Lauren Benz, AGACNP-AG

Nurse Practitioner (CMS) · Falls Church, VA

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
71%Service-mix similarity~15.3 milesView profile →

Veronica Yam

Nurse Practitioner (CMS) · Washington, DC

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
68%Service-mix similarity~21.3 milesView profile →

Susan Thornton Oyola, AGACNP-BC

Nurse Practitioner (CMS) · Washington, DC

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
60%Service-mix similarity~23.6 milesView profile →

Joseph Griffin Rebideaux, AGACNP-BC

Nurse Practitioner (CMS) · Washington, DC

Shared published services
2 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 moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%Service-mix similarity~23.6 milesView profile →

Sharmaine Michele Mccoy, ACNP

Nurse Practitioner (CMS) · Falls Church, VA

Shared published services
2 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 moderate levelof medical decision making, if using time, at least 35 minutes (99232)
56%Service-mix similarity~15.3 milesView profile →

Colleen Marshall, APRN

Nurse Practitioner (CMS) · Washington, DC

Shared published services
2 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 moderate levelof medical decision making, if using time, at least 35 minutes (99232)
50%Service-mix similarity~23.6 milesView profile →

Ryan Mark Robinson, AG-ACNP

Nurse Practitioner (CMS) · Reston, VA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
48%Service-mix similarity~21.4 milesView profile →

Katera Helen Stevens

Specialty details in registry · Reston, VA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
48%Service-mix similarity~19.5 milesView profile →

Claire E Lewis, NP

Nurse Practitioner (CMS) · Falls Church, VA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
48%Service-mix similarity~15.3 milesView profile →

Lyn Hopkinson, NP

Nurse Practitioner (CMS) · Washington, DC

Shared published services
2 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 moderate levelof medical decision making, if using time, at least 35 minutes (99232)
46%Service-mix similarity~23.6 milesView 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 approximate distance 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.