John Francis O Brien, MD
Internal Medicine Physician · Newton Lower Falls, MA
John Francis O Brien, MD is an internal medicine physician with a practice address in Newton Lower Falls, Massachusetts, and NPI 1588678965, issued on Jul 28, 2006. Check the license (Massachusetts 37318, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- John Francis O Brien
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 37318 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2000 Washington St, Newton Lower Falls, MA 02462
- Phone
- (617) 964-9050
- Enumerated
- Jul 28, 2006
- Record last updated
- Oct 15, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (617) 928-0913
- Medicaid ID
- 0164879 MA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 2000 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Francis O Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 37318Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
151 Medicare Part D claims for 65 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium28 claims
- Levothyroxine Sodium11 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.
John Francis O Brien among 6,825 internal medicine physician records in Massachusetts
John Francis O Brien, 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2020 · 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).
15 internal medicine physician records list a practice address in Newton Lower Falls
They are 15 of the 31 NPPES records with a practice address in Newton Lower Falls, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Newton Lower Falls → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thomas Cunningham, M.D.Newton Lower Falls, MA 024621326153503
- Allan Engel, M.D.Newton Lower Falls, MA 024621104813443
- Arthur Kennedy, M.D.Newton, MA 024621043223266
- Nicholas Michael Mascoli, M.D.Newton Lower Falls, MA 024621013964717
- Steven Pestka, M.D.Newton, MA 024621407807498
- Harry Schrager, M.D.Newton, MA 024621871540666
- David Wachs, M.D.Newton, MA 024621073571436
- Bradford Weiner, MDNewton, MA 024621295792802
Common questions
What is John Francis O Brien, MD's NPI number?
John Francis O Brien, MD's National Provider Identifier (NPI) is 1588678965, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Francis O Brien, MD located?
The NPPES record lists a practice address at 2000 Washington St, Newton Lower Falls, MA, 02462. Phone: (617) 964-9050. Providers update this record themselves, so call before visiting.
How can I verify John Francis O Brien, MD's license?
NPPES lists Massachusetts license number 37318, 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 John Francis O Brien, MD prescribe under Medicare Part D?
In 2024, John Francis O Brien, MD had 151 Medicare Part D claims for 65 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.