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Compare the published Medicare service mix of Ian Parker, DO with clinicians in the same registry specialty: Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS).

OKLAHOMA CITY, OK · Exact areaEdit location

2024 published service data · 16 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Coty Wayne Jewell, MD

Cardiac Electrophysiology (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
87%Service-mix similarityView profile →

Paul James Garabelli, M.D.

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
86%Service-mix similarityView profile →

Jack L. Collier, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
81%Service-mix similarityView profile →

Subha Varahan, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
79%Service-mix similarityView profile →

Charles Carvajal Te, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
76%Service-mix similarityView profile →

Sean Michael Halleran, M.D.

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
73%Service-mix similarityView profile →

Monica Ya-Wen Lo, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
73%Service-mix similarityView profile →

Mark Neil Harvey, M.D.

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
72%Service-mix similarityView profile →

John H Summers, M.D.

Cardiac Electrophysiology (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
70%Service-mix similarityView profile →

Joshua Edison Payne, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
67%Service-mix similarityView profile →

Richard Thomas Lane, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
67%Service-mix similarityView profile →

Terrance Khastgir, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Oklahoma City, OK

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
62%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.