John Dowd, D.O.
NPI 1164498648 · Gastroenterology Physician · Manchester, NH
Enrolled with Medicare as Practitioner - Osteopathic Manipulative Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Dowd, D.O. is a Gastroenterology Physician provider in Manchester, NH (NPI 1164498648).
Provider details
- NPI number
- 1164498648
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 10860 (NH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
553 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 141 | $258 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 121 | $99 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 76 | $101 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 49 | $82 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 41 | $181 |
| Biopsy of Large Bowel Using a Flexible Endoscope |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 107 | 38 |
| Pantoprazole Sodium | 49 | 18 |
| Linaclotidebrand: Linzess | 37 | — |
| Ursodiol | 34 | — |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab | 34 | 32 |
| Balsalazide Disodium | 23 | — |
| Mesalamine | 21 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$921 across 28 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-24
- Last updated
- 2017-11-16
Frequently asked questions
- What is John Dowd's NPI number?
- John Dowd's National Provider Identifier (NPI) is 1164498648, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Dowd's specialty?
- John Dowd is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is John Dowd located?
- John Dowd's practice location on file with NPPES is 100 Hitchcock Way, Manchester, NH 03104-4125.
- What is John Dowd's phone number?
- The practice phone number listed in the NPPES registry for John Dowd is (603) 695-2500.
- Does John Dowd accept Medicare?
- John Dowd is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Dowd's NPI active?
- Yes — John Dowd's NPI (1164498648) is active in the NPPES registry as of the last update on 2017-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.