NEVVI Medicare utilization intelligence

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GASTROENTEROLOGY SPECIALISTS, INC.

PAC 0446251664 Physician group
GASTROENTEROLOGY · TULSA, OK · hospital-affiliated
Specialty GASTROENTEROLOGY — most common member specialty (multi-specialty groups carry one label; see Methods)
Footprint Registered in TULSA, OK · bills Medicare in 1 state (OK)
Scale 23 providers on the CMS registry roster · 50 codes billed (five-year data window) · 12,875 services (all billed codes, CY2024)
Medicare paid $723K · across all billed codes, CY2024, attributed & disclosed
Affiliation Hospital-affiliated — at least one member holds a hospital affiliation in the CMS registry
Contact (918) 940-8900 — CMS registry listing
CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · figures are attributed (single-group clinicians) and disclosed fee-for-service — a subset, never complete totals · group series shown over the most recent 5 years (rosters archived from 2019)
Group analytics

Who's billing in this group, plus the paid volume analytics · CY2024

Clinician makeup · CY2024
Physicians 10Advanced-practice 11Other clinicians 0= 21 clinicians billed · CY2024
By clinician headcount, CY2024. 'Physician' follows Medicare's §1861(r) definition (MD/DO, podiatry, optometry, dental medicine, chiropractic); facility and supplier enrollments are not counted as clinicians. These 21 are the clinicians who billed in CY2024 — a subset of the all-time registry roster shown on the group's identity card.

Billed 29 of the group's 50 codes this year, across 1 state (CY2024).

The full analytics for this group

Premium

The billed-volume rank, trajectory, and economics behind this group — computed on the same disclosed Medicare Part B data.

What Medicare paid this group in CY2024 is on the group's identity card — free, on every tier. Premium breaks that figure down per code and per service, and puts the volume behind it in national and peer context.

  • Per-code payment breakdown & avg $/service — dollars behind the volume
  • Beneficiary-episode volume — reach, not just service counts
  • Office vs. facility setting mix — place-of-service code split
  • National billed-volume rank — percentile, cohort & year disclosed
  • Size-peer billed-volume benchmark — vs. groups of similar size
  • Top-3 clinician share — how volume distributes
  • 5-year volume trend — direction across the window
  • Business mix — largest codes by payment

Rank and benchmark figures are billed-volume positions among peers, not measures of care. All figures attributed (single-group clinicians) and disclosed Medicare Part B fee-for-service.

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Medicare Part B FFS · CY2024 · as published by CMS

Provider volumes, all codes · CY2024

NPIProviderCredentialsTypeCitySt Services (all codes) locked column
1053599951 Thompson, Roy M.D. Gastroenterology TulsaOK premium
1750378899 Martin, Michael M.D. Gastroenterology TulsaOK premium
1730176884 Briggs, William M.D. Gastroenterology TulsaOK premium
1235126426 Hood, John M.D. Gastroenterology TulsaOK premium
1164419362 Bigler, Jeffrey M.D. Gastroenterology TulsaOK premium
1013022680 Fillmore, Geoffrey D.O. Gastroenterology TulsaOK premium
1821617077 Chelf, Mary Nurse Practitioner TulsaOK premium
1336772771 Johnson, Lisa Nurse Practitioner BartlesvilleOK premium
1801394101 Rogers, Kristina APRN, CNP Nurse Practitioner TulsaOK premium
1588053698 Gilkison, Melissa APRN-CRNA Certified Registered Nurse Anesthetist (CRNA) TulsaOK premium
1962006585 Horton, Lora APRN NP-C Nurse Practitioner TulsaOK premium
1679958797 Ballard, Aubrey CRNA Certified Registered Nurse Anesthetist (CRNA) TulsaOK premium
1114982089 Berger, Sheldon · member of 2 groups D.O. Gastroenterology TulsaOK premium
1326268079 Fieker, Aaron · member of 2 groups D.O. Gastroenterology TulsaOK premium
1497714687 Hendrickson, Scott · member of 2 groups DO Gastroenterology TulsaOK premium
1841735164 Malik, Lizabeth · member of 3 groups CRNA Certified Registered Nurse Anesthetist (CRNA) TulsaOK premium
1891170908 Mcelroy, Katherine · member of 2 groups CRNA Certified Registered Nurse Anesthetist (CRNA) JoplinMO premium
1952367393 Morris, David · member of 3 groups D.O. Gastroenterology TulsaOK premium
1023774353 Myers, Courtney · member of 2 groups APRN Nurse Practitioner TulsaOK premium
1942715396 Snyder, Susan · member of 2 groups APRN Nurse Practitioner TulsaOK premium
1750731014 Zhang, Xian · member of 2 groups CRNA Certified Registered Nurse Anesthetist (CRNA) TulsaOK premium

Volumes are attributed to a group only for clinicians affiliated with exactly one group. Clinicians in several groups are listed ("member of N groups") but shown as "—" — their volume is not attributed to any single group. A "—" on a single-group clinician means CMS suppressed the figure (fewer than 11 beneficiaries), never zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average Medicare payment is the amount Medicare actually paid per service, weighted by service volume across office and facility settings. Where the roster is a single clinician, that clinician's service counts match the group's attributed volume shown on the ranked results, so they are shown here; the per-provider split across a larger roster is a premium feature. See Methods & Sources.