NPPES file of Aug 9, 2026

Gregory M. McCarthy, M.D.

Gastroenterology Physician · Manchester, NH

Gregory M. McCarthy, M.D. is a gastroenterology physician with a practice address in Manchester, New Hampshire, and NPI 1942393525, issued on Oct 2, 2006. Check the license (New Hampshire 7256, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1942393525
Name
Gregory M. McCarthy
Credential
M.D.
Primary taxonomy
Gastroenterology Physician 207RG0100X
License numbers
7256 NH
CDR.0000643 CO
Self-reported in NPPES; status is on the state search
Practice location
100 Hitchcock Way, Manchester, NH 03104
Phone
(603) 695-2500
Enumerated
Oct 2, 2006
Record last updated
Aug 19, 2022
Fax
(603) 369-6365
Medicaid ID
3081639 NH
Medicare enrollment
Enrolled (PECOS I20040408000271); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest gastroenterology physician records → All 110 in New Hampshire → Look up another NPI →

Also registered at 100 Hitchcock Way

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. David Abels, M.D.Specialist1720035199
  2. Stephanie Ackerson, MSN, APRN, CDCESNurse Practitioner1477083038
  3. Jason Akerman, MDUrology Physician1003475914
  4. Sally Alwan, MDFamily Medicine Physician1255546115
  5. Angelina Androsova, PAPhysician Assistant1174829048
  6. Gerald Angoff, M.D.Cardiovascular Disease Physician1215999305

Verify Gregory M. McCarthy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNew Hampshire Board of Medicine
    Search for license 7256    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New Hampshire license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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95% fewer Medicare Part D claims than the average gastroenterology physician in 2024

38 Medicare Part D claims for 35 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.

  1. Gregory McCarthy38
  2. Specialty average811

Most prescribed

  1. Peg 3350-Electrolyte19 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $27.14

1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Gregory McCarthy$27.14
  2. Specialty average$5,015.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Elliot Professional ServicesManchester, NH
  2. St. Joseph Hospital OF Nashua NHNashua, NH

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory M. McCarthy among 110 gastroenterology physician records in New Hampshire

Gregory M. McCarthy, M.D. is one of 110 gastroenterology physician records with a practice address in New Hampshire. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 14% of them.

  • NPI issued2006 · 14% of these records are older, 42% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 73% of these records are
  • Graduated1980 · median 2002 among the 80 with a school on file
  • Record last updated2022 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a New Hampshire practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Gastroenterology Physician providers in New Hampshire

There are 110 gastroenterology physician records in New Hampshire.

All 110 in New Hampshire → Every provider in Manchester → Gastroenterology Physician nationwide →

The 8 gastroenterology physician records with the nearest ZIP codes

  1. John Dowd, D.O.Manchester, NH 031041164498648
  2. David Golden, M.D.Manchester, NH 031041891897856
  3. Angelo Pete Horatagis, M.D.Manchester, NH 031041992893820
  4. Stuart Jarvis, MDManchester, NH 031041467415067
  5. Emilianos Karagiannis, M.D.Manchester, NH 031041689657363
  6. Francis Macmillan, M.D.Manchester, NH 031041205804952
  7. Trinh Meyer, M.D.Manchester, NH 031041164563268
  8. Johann Rothwangl, M.DManchester, NH 031041346216736

Common questions

What is Gregory M. McCarthy, M.D.'s NPI number?

Gregory M. McCarthy, M.D.'s National Provider Identifier (NPI) is 1942393525, issued on Oct 2, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory M. McCarthy, M.D. located?

The NPPES record lists a practice address at 100 Hitchcock Way, Manchester, NH, 03104. Phone: (603) 695-2500. Providers update this record themselves, so call before visiting.

How can I verify Gregory M. McCarthy, M.D.'s license?

NPPES lists New Hampshire license number 7256, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Gregory M. McCarthy, M.D. prescribe under Medicare Part D?

In 2024, Gregory M. McCarthy, M.D. had 38 Medicare Part D claims for 35 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.