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MERRIMACK VALLEY EMERGENCY ASSOCIATES, INC.

PAC 2062508377 Physician group
EMERGENCY MEDICINE · LOWELL, MA · hospital-affiliated
Specialty EMERGENCY MEDICINE — most common member specialty (multi-specialty groups carry one label; see Methods)
Footprint Registered in LOWELL, MA · bills Medicare in 3 states (CA, MA, PA)
Scale 18 providers on the CMS registry roster · 16 codes billed (five-year data window) · 4,042 services (all billed codes, CY2024)
Medicare paid $496K · across all billed codes, CY2024, attributed & disclosed
Affiliation Hospital-affiliated — at least one member holds a hospital affiliation in the CMS registry
Contact (617) 937-6000 — 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 14Advanced-practice 2Other clinicians 0= 16 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 16 are the clinicians who billed in CY2024 — a subset of the all-time registry roster shown on the group's identity card.

Billed 10 of the group's 16 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
Data year: CY2024 CY2023 CY2022  CY2021  CY2020 

Provider volumes, all codes · CY2024

NPIProviderCredentialsTypeCitySt Services (all codes)
1639499536 Glazier, Scott M.D. Emergency Medicine ClairtonPA
1720152085 Oppenheim, Jonathan MD Emergency Medicine LowellMA
1972575330 Thomas, Stephen MD Emergency Medicine OceansideCA
1962745539 Grimmnitz, Benjamin MD Emergency Medicine BostonMA
1952551376 Nitka, Meaghan MD Emergency Medicine LowellMA
1316308216 Druga, David M.D. Emergency Medicine BostonMA
1073900619 Garcia, Grace Emergency Medicine BostonMA
1992061253 Halpern, Leslie M.D. Emergency Medicine LowellMA
1053755462 Bramante, Tina D.O. Emergency Medicine LowellMA
1073774915 Calner, Paul M.D. Emergency Medicine BostonMA
1699799726 Epstein, Stephen Emergency Medicine NeedhamMA
1649239500 Corvi, Francesco · member of 2 groups Emergency Medicine LowellMA
1467228650 Gebreyesus, Harena · member of 2 groups PA-C Physician Assistant BostonMA
1932418555 Johnson, Bettina · member of 3 groups CNP Nurse Practitioner BurlingtonMA
1316406531 Matuk, Rani · member of 2 groups MD Emergency Medicine LowellMA
1356704316 Schmakel, James · member of 2 groups MD Emergency Medicine DetroitMI

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.