Douglas Oneill, MD
NPI 1003893082 · Internal Medicine Physician · North Adams, MA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Oneill, MD is a Internal Medicine Physician provider in North Adams, MA (NPI 1003893082).
Provider details
- NPI number
- 1003893082
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 156842 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 153 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 747 | 220 |
| Amlodipine Besylate | 513 | 156 |
| Rosuvastatin Calcium | 425 | 115 |
| Omeprazole | 381 | 100 |
| Lisinopril | 379 | 110 |
| Levothyroxine Sodium | 371 | 93 |
| Losartan Potassium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-29
- Last updated
- 2018-05-16
Frequently asked questions
- What is Douglas Oneill's NPI number?
- Douglas Oneill's National Provider Identifier (NPI) is 1003893082, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Oneill's specialty?
- Douglas Oneill is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Oneill located?
- Douglas Oneill's practice location on file with NPPES is 71 Hospital Ave, North Adams, MA 01247.
- What is Douglas Oneill's phone number?
- The practice phone number listed in the NPPES registry for Douglas Oneill is (413) 664-5710.
- Does Douglas Oneill accept Medicare?
- Douglas Oneill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Oneill's NPI active?
- Yes — Douglas Oneill's NPI (1003893082) is active in the NPPES registry as of the last update on 2018-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.