NEVVI Medicare utilization intelligence

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MEMORIAL HEALTH CARE SYSTEM INC.

PAC 8628978210 Physician group
CARDIOVASCULAR DISEASE (CARDIOLOGY) · CHATTANOOGA, TN · hospital-affiliated
Specialty CARDIOVASCULAR DISEASE (CARDIOLOGY) — most common member specialty (multi-specialty groups carry one label; see Methods)
Footprint Registered in CHATTANOOGA, TN · bills Medicare in 4 states (FL, GA, TN, WA)
Scale 56 providers on the CMS registry roster · 159 codes billed (five-year data window) · 139,458 services (all billed codes, CY2024)
Medicare paid $5.5M · across all billed codes, CY2024, attributed & disclosed
Affiliation Hospital-affiliated — at least one member holds a hospital affiliation in the CMS registry
Contact (423) 697-2000 — 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 33Advanced-practice 20Other clinicians 0= 53 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 53 are the clinicians who billed in CY2024 — a subset of the all-time registry roster shown on the group's identity card.

Billed 94 of the group's 159 codes this year, across 3 states (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
1538168893 Mitchell, Brian MD Cardiology ClevelandTN premium
1306814520 Bruce, Gregory M.D. Clinical Cardiac Electrophysiology ChattanoogaTN premium
1497754733 Shander, Gregg MD Clinical Cardiac Electrophysiology ChattanoogaTN premium
1740289073 Powers, Joseph MD Cardiology ClevelandTN premium
1992704191 Warren, William MD Cardiology ChattanoogaTN premium
1679557649 Carkner, Lisa M.D. Cardiology ChattanoogaTN premium
1104142439 Lehman, Elmer MD Cardiology ChattanoogaTN premium
1578632550 Jones, Samuel MD Clinical Cardiac Electrophysiology ChattanoogaTN premium
1730151994 Lisy, Ondrej M.D. Cardiology ChattanoogaTN premium
1831415397 Wiggins, Newton Clinical Cardiac Electrophysiology ChattanoogaTN premium
1922184449 Richardson, Kelly MD Clinical Cardiac Electrophysiology ChattanoogaTN premium
1831274372 Fowler, Andrew M.D. Cardiology ChattanoogaTN premium
1841299153 Oellerich, William MD Cardiology ChattanoogaTN premium
1447259742 Monroe, Van MD Cardiology ChattanoogaTN premium
1033180971 Ledford, Calvin MD Cardiology ChattanoogaTN premium
1437383676 Ramjee, Vimal M.D. Cardiology ChattanoogaTN premium
1225303373 Soufer, Aaron MD Cardiology ChattanoogaTN premium
1528351632 Mandawat, Aditya M.D. Interventional Cardiology ChattanoogaTN premium
1669748638 Cheng, Henry MD Cardiology ChattanoogaTN premium
1134320476 Atchley, Allen M.D. Cardiology ChattanoogaTN premium
1902225014 Armstrong, William MD Cardiology ChattanoogaTN premium
1396120408 Black, Joshua APN Nurse Practitioner ChattanoogaTN premium
1548624398 Miller, Neal M.D. Cardiology SeattleWA premium
1477596328 Huang, Robert MD Interventional Cardiology ChattanoogaTN premium
1659370997 Thel, Mark MD Cardiology ChattanoogaTN premium
1548781156 Randall, Sally APN Nurse Practitioner ChattanoogaTN premium
1245623883 Rogers, Holly APN Nurse Practitioner ChattanoogaTN premium
1801351143 Swanger, Teresa APN Nurse Practitioner DaltonGA premium
1679539092 Phillips, Kelly APRN-BC, FNP Nurse Practitioner ChattanoogaTN premium
1912188897 Hemphill, John MD Interventional Cardiology ChattanoogaTN premium
1114493848 Stover, Sabrina APRN Nurse Practitioner ChattanoogaTN premium
1437501368 Chancey, Stevens APN Nurse Practitioner ChattanoogaTN premium
1184834251 Madan, Vinay MD Cardiology ChattanoogaTN premium
1689673998 Negus, Brian MD Interventional Cardiology ChattanoogaTN premium
1063736551 Barnett, Genna APN Nurse Practitioner ChattanoogaTN premium
1952913808 Wilbanks, Carol NP Nurse Practitioner ChattanoogaTN premium
1790036952 Winters, Jody ANP Nurse Practitioner ChattanoogaTN premium
1124525761 Emerson, Brandon MD Internal Medicine NashvilleTN premium
1164421483 Marcum, James MD Cardiology ClevelandTN premium
1245459403 Craig, John MD Thoracic Surgery ChattanoogaTN premium
1336589845 Licht, Kelly APN Nurse Practitioner ChattanoogaTN premium
1073988903 Spreco, Enesa NP Nurse Practitioner ChattanoogaTN premium
1215575113 Burroughs, Abigail APN Nurse Practitioner ChattanoogaTN premium
1427147461 Loga, Michael MSN, FNP-C Nurse Practitioner ChattanoogaTN premium
1003531583 Benson, Chelsey DNP, AG-ACNP Nurse Practitioner ChattanoogaTN premium
1053774208 Melnikoff, Brett MD Thoracic Surgery ChattanoogaTN premium
1730721465 Patty, Cathy APN Nurse Practitioner ChattanoogaTN premium
1427506922 Akins, Gillian NP Nurse Practitioner ChattanoogaTN premium
1831972355 Hood, Kayla APN Nurse Practitioner ChattanoogaTN premium
1194189910 Miller, Vanessa M.D. Thoracic Surgery ChattanoogaTN premium
1184974032 Milligan, Penny NP-C Nurse Practitioner ChattanoogaTN premium
1730419474 Smith Vaughn, Melissa · member of 2 groups FNP Nurse Practitioner ChattanoogaTN premium
1184610867 Zellner, James · member of 2 groups MD Cardiac Surgery ChattanoogaTN 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.