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Compare the published Medicare service mix of Christina Ellen Brzezniak, DO with clinicians in the same registry specialty: Hematology/Oncology (CMS).

RESTON, VA · 10 milesEdit location
Within 10 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 · 18 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Chao Yin, MD

Hematology/Oncology (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Blood test, comprehensive group of blood chemicals (80053)
86%Service-mix similarity~3.7 milesView profile →

Samantha Leigh Dibenedetto, MD

Hematology/Oncology (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Blood test, comprehensive group of blood chemicals (80053)
85%Service-mix similarity~3.7 milesView profile →

Timothy Andrew Mccarthy, M.D.

Hematology/Oncology (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Blood test, comprehensive group of blood chemicals (80053)
85%Service-mix similarity~3.7 milesView profile →

Daniel Gene Chong, M.D.

Hematology/Oncology (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Blood test, comprehensive group of blood chemicals (80053)
82%Service-mix similarity~4.0 milesView profile →

Gregory J Orloff, M.D.

Hematology/Oncology (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Blood test, comprehensive group of blood chemicals (80053)
81%Service-mix similarity~3.7 milesView profile →

Dipti Patel-Donnelly, M.D.

Hematology/Oncology (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Blood test, comprehensive group of blood chemicals (80053)
80%Service-mix similarity~3.7 milesView profile →

Mohamad Adham Salkeni, M.D.

Hematology/Oncology (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Blood test, comprehensive group of blood chemicals (80053)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
50%Service-mix similarity~3.7 milesView profile →

Naveen Doki, M.D

Hematology/Oncology · Internal Medicine (CMS) · Fairfax, VA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
49%Service-mix similarity~3.7 milesView profile →

Rumaisa Hameed, M.D

Hematology/Oncology · Internal Medicine (CMS) · Falls Church, VA

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)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
  • Injection of additional new drug or substance into vein (96375)
43%Service-mix similarity~7.0 milesView profile →

Camila Sahebi, MD

Hematology/Oncology · Hospice/Palliative Care · Internal Medicine (CMS) · Vienna, VA

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Administration of chemotherapy into vein, 1 hour or less (96413)
39%Service-mix similarity~3.6 milesView profile →

Raymond C Wadlow, MD

Internal Medicine · Medical Oncology (CMS) · Fairfax, VA

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)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
34%Service-mix similarity~3.7 milesView profile →

William B Ershler, M.D.

Hematology/Oncology · Internal Medicine · Medical Oncology (CMS) · Fairfax, VA

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)
  • 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)
30%Service-mix similarity~3.7 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.