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Compare the published Medicare service mix of Diem Quynh Pham, D.O. with clinicians in the same registry specialty: Dermatology (CMS).

CHINO HILLS, CA · 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 · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Hong Nguyen, M.D.

Dermatology (CMS) · Long Beach, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
83%Service-mix similarity~24.3 milesView profile →

Kristen Marie Kelly, MD

Dermatology (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
80%Service-mix similarity~15.7 milesView profile →

Ronald Demetri Liskanich, D.O.

Anesthesiology · Dermatology (CMS) · Upland, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
79%Service-mix similarity~10.2 milesView profile →

Jafar Koupaie, MD

Dermatology (CMS) · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
77%Service-mix similarity~16.1 milesView profile →

Daniel Andres Dicesare, M.D.

Dermatology (CMS) · Rancho Santa Margarita, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
77%Service-mix similarity~24.0 milesView profile →

Gloria Jane Stevens, M.D.

Dermatology (CMS) · Upland, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
70%Service-mix similarity~10.2 milesView profile →

Tan Khac Nguyen, M.D.

Internal Medicine (CMS) · Upland, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
67%Service-mix similarity~10.2 milesView profile →

Jay Applebaum, M.D.

Dermatology (CMS) · Tustin, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
65%Service-mix similarity~17.6 milesView profile →

Christopher Bransby Zachary, M.D.

Dermatology (CMS) · Irvine, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
64%Service-mix similarity~23.7 milesView profile →

Edward Mark Kramer, M.D.

Dermatology (CMS) · Anaheim, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
64%Service-mix similarity~17.8 milesView profile →

Ethan-Quan H Nguyen, MD

Dermatology (CMS) · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
62%Service-mix similarity~20.7 milesView profile →

David B. Friedman, M.D.

Dermatology (CMS) · Anaheim, CA

Shared published services
3 shared services · view billing descriptions
  • Destruction of precancer skin growth, 2-14 growths (17003)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Destruction of skin growth, 1-14 growths (17110)
60%Service-mix similarity~15.9 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.