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Compare the published Medicare service mix of Lawrence B Marks, M.D. with clinicians in the same registry specialty: Radiation Oncology (CMS).

CHAPEL HILL, NC · Exact areaEdit location

2024 published service data · 17 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Mitchell S Anscher, M.D.

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
48%Service-mix similarityView profile →

Ellen Louise Jones, M.D.

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
2 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)
46%Service-mix similarityView profile →

Neil Ari Wijetunga, MD, PHD, MS

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
2 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)
43%Service-mix similarityView profile →

Gaorav Pankaj Gupta, M.D., PH.D.

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
33%Service-mix similarityView profile →

Shivani Sud, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
30%Service-mix similarityView profile →

David E Morris, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
30%Service-mix similarityView profile →

James Edward Bates, M.D.

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
29%Service-mix similarityView profile →

Michael Charles Repka, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
27%Service-mix similarityView profile →

Andrew Zhuang Wang, M.D.

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
27%Service-mix similarityView profile →

Dana Lynne Casey, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
27%Service-mix similarityView profile →

Colette Joan Shen, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
26%Service-mix similarityView profile →

Kevin Alexander Pearlstein, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
26%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.