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Similar work.
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Compare the published Medicare service mix of John Kevin O'connor, M.D. with clinicians in the same registry specialty: Radiation Oncology (CMS).

DALLAS, TX · Exact areaEdit location

2024 published service data · 28 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Donald Everett Schwarz, M.D.

Specialty details in registry · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
81%Service-mix similarityView profile →

Anand Thanwar Shivnani, MD

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
78%Service-mix similarityView profile →

Wilson Leon Hernandez, M.D.

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
77%Service-mix similarityView profile →

Jessamy Anne Boyd, MD

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
76%Service-mix similarityView profile →

Barry Neal Wilcox, M.D.

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
76%Service-mix similarityView profile →

Jerry Lee Barker, M.D.

Specialty details in registry · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
74%Service-mix similarityView profile →

Granger Ryan Scruggs, MD

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
71%Service-mix similarityView profile →

Kesha Richelle Harris-Henderson, M.D.

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
71%Service-mix similarityView profile →

Nhat-Long Lam Pham, M.D., PH.D.

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
69%Service-mix similarityView profile →

Kevin Albuquerque, MD

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
69%Service-mix similarityView profile →

Arve Ward Gillette, M.D.

Internal Medicine · Medical Oncology · Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
69%Service-mix similarityView profile →

Timothy D Nichols, MD

Radiation Oncology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Calculation of radiation therapy dose (77300)
66%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.