John Gerald Dowd, D.O.
Gastroenterology Physician · Manchester, NH
John Gerald Dowd, D.O. is a gastroenterology physician with a practice address in Manchester, New Hampshire, and NPI 1164498648, issued on Feb 24, 2006. Check the license (New Hampshire 10860, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John Gerald Dowd
- Credential
- D.O.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 10860 NH
Self-reported in NPPES; status is on the state search - Practice location
- 100 Hitchcock Way, Manchester, NH 03104
- Phone
- (603) 695-2500
- Enumerated
- Feb 24, 2006
- Record last updated
- Nov 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicaid ID
- 30220912 NH
- Medicare enrollment
- Enrolled (PECOS I20180719001952); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
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.
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- Jason Akerman, MDUrology Physician1003475914
- Sally Alwan, MDFamily Medicine Physician1255546115
- Angelina Androsova, PAPhysician Assistant1174829048
- Gerald Angoff, M.D.Cardiovascular Disease Physician1215999305
Verify John Gerald Dowd in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 10860Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average gastroenterology physician in 2024
565 Medicare Part D claims for 175 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Omeprazole107 claims
- Pantoprazole Sodium49 claims
- Linzess37 claims
- Sutab34 claims
- Ursodiol34 claims
- Balsalazide Disodium23 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: $921.12
28 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Emerson Practice Associates, IncConcord, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Gerald Dowd among 110 gastroenterology physician records in New Hampshire
John Gerald Dowd, D.O. 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
- Graduated1994 · median 2002 among the 80 with a school on file
- Record last updated2017 · 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
- David Golden, M.D.Manchester, NH 031041891897856
- Angelo Pete Horatagis, M.D.Manchester, NH 031041992893820
- Stuart Jarvis, MDManchester, NH 031041467415067
- Emilianos Karagiannis, M.D.Manchester, NH 031041689657363
- Francis Macmillan, M.D.Manchester, NH 031041205804952
- Gregory McCarthy, M.D.Manchester, NH 031041942393525
- Trinh Meyer, M.D.Manchester, NH 031041164563268
- Johann Rothwangl, M.DManchester, NH 031041346216736
Common questions
What is John Gerald Dowd, D.O.'s NPI number?
John Gerald Dowd, D.O.'s National Provider Identifier (NPI) is 1164498648, issued on Feb 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Gerald Dowd, D.O. 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 John Gerald Dowd, D.O.'s license?
NPPES lists New Hampshire license number 10860, 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 John Gerald Dowd, D.O. prescribe under Medicare Part D?
In 2024, John Gerald Dowd, D.O. had 565 Medicare Part D claims for 175 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.
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.