Douglas B. Oneill, MD
Internal Medicine Physician · North Adams, MA
Douglas B. Oneill, MD is an internal medicine physician with a practice address in North Adams, Massachusetts, and NPI 1003893082, issued on Dec 29, 2005. Check the license (Massachusetts 156842, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Douglas B. Oneill
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 156842 MA
Self-reported in NPPES; status is on the state search - Practice location
- 71 Hospital Ave, North Adams, MA 01247
- Phone
- (413) 664-5710
- Enumerated
- Dec 29, 2005
- Record last updated
- May 16, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (413) 664-5773
- Medicaid IDs
- 3182037 MA
OVN1533 VT - Medicare enrollment
- Enrolled (PECOS I20080501000479); accepts Medicare assignment
- Medical or professional school
- Medical College Of Pennsylvania, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 71 Hospital Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Bedard, NPAcute Care Nurse Practitioner1083325179
- Sarah Chenail, PA-CPhysician Assistant1891021788
- Steven Cherry, DOInternal Medicine Physician1841393923
- Jennifer Civello, MA CTTSSpecialist1013144492
- Alyssa Cook, PA-CMedical Physician Assistant1508556200
- Elizabeth Curtis, CNMAdvanced Practice Midwife1912880899
Verify Douglas B. Oneill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 156842Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.8 times the Medicare Part D claims of the average internal medicine physician in 2024
12,039 Medicare Part D claims for 799 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 292 claims were for opioids.
Most prescribed
- Atorvastatin Calcium747 claims
- Amlodipine Besylate513 claims
- Rosuvastatin Calcium425 claims
- Omeprazole381 claims
- Lisinopril379 claims
- Levothyroxine Sodium371 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.
2 hospitals and group practices
- Fairview HospitalWilliamstown, MA · Critical Access Hospitals5 of 5 stars
- Berkshire Faculty Services IncNorth Adams, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Douglas B. Oneill among 6,825 internal medicine physician records in Massachusetts
Douglas B. Oneill, MD is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1994 · median 2004 among the 4,103 with a school on file
- Record last updated2018 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 internal medicine physician records list a practice address in North Adams
They are 6 of the 313 NPPES records with a practice address in North Adams, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in North Adams → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Steven Cherry, DONorth Adams, MA 012471841393923
- Kristin Lamontagne, MDNorth Adams, MA 012471174635965
- Mary Sheffield, M.D.Adams, MA 012471437173465
- Shaohua Tang, M.D.North Adams, MA 012471225029275
- Sarah Turner, D.O.North Adams, MA 012471164838710
- Michael Wilson, M.D.North Adams, MA 012471811974876
- Nada Esa, MDLenox, MA 012401558713065
- Cynthia Geyer, M.D.Lenox, MA 012401235144528
Common questions
What is Douglas B. Oneill, MD's NPI number?
Douglas B. Oneill, MD's National Provider Identifier (NPI) is 1003893082, issued on Dec 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Douglas B. Oneill, MD located?
The NPPES record lists a practice address at 71 Hospital Ave, North Adams, MA, 01247. Phone: (413) 664-5710. Providers update this record themselves, so call before visiting.
How can I verify Douglas B. Oneill, MD's license?
NPPES lists Massachusetts license number 156842, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Douglas B. Oneill, MD prescribe under Medicare Part D?
In 2024, Douglas B. Oneill, MD had 12,039 Medicare Part D claims for 799 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.