Mark Brady Oien, DO
Family Medicine Physician · Plymouth, MA
Mark Brady Oien, DO is a family medicine physician with a practice address in Plymouth, Massachusetts, and NPI 1275971038, issued on Jun 13, 2013. Check the license (Massachusetts MA265312, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark Brady Oien
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MA265312 MA
Self-reported in NPPES; status is on the state search - Practice location
- 275 Sandwich St, Plymouth, MA 02360
- Phone
- (508) 746-2000
- Enumerated
- Jun 13, 2013
- Record last updated
- Oct 1, 2024
- Fax
- (508) 830-2378
- Medicare enrollment
- Enrolled (PECOS I20241107000367); accepts Medicare assignment
- Medical or professional school
- University Of New England, College Of Osteo Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 275 Sandwich St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charbel Abou Rjeily, MDInternal Medicine Physician1710175583
- Caroline Alpert, M.D.Internal Medicine Physician1831177260
- Ahmad AmmousHospitalist Physician1083119549
- Andis BalaNurse Practitioner1770154494
- Ronald Bardawil, M.D.Anatomic Pathology & Clinical Pathology Physician1336118595
- Randy BarnhardCertified Registered Nurse Anesthetist1811373855
Verify Mark Brady Oien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license MA265312Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
24 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Medical Care OF Boston Management CorporationSharon, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Brady Oien among 2,265 family medicine physician records in Massachusetts
Mark Brady Oien, DO is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 68% of them.
- NPI issued2013 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2013 · median 2006 among the 1,529 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in Massachusetts
There are 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Plymouth → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Samridhi Chikersal, M.DPlymouth, MA 023601659712362
- Cassandra Dorvil, D.O.Plymouth, MA 023601023457355
- Mary Engel, M.D.Plymouth, MA 023601467643932
- Mark Eubanks, M.D.Plymouth, MA 023601619955465
- Ashley Gallagher, MDPlymouth, MA 023601154532364
- Patricia Labaire, M.D.Plymouth, MA 023601356331334
- Cara Strobel, DOPlymouth, MA 023601831752666
- Lindsay Yorns, DOPlymouth, MA 023601538457908
Common questions
What is Mark Brady Oien, DO's NPI number?
Mark Brady Oien, DO's National Provider Identifier (NPI) is 1275971038, issued on Jun 13, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mark Brady Oien, DO located?
The NPPES record lists a practice address at 275 Sandwich St, Plymouth, MA, 02360. Phone: (508) 746-2000. Providers update this record themselves, so call before visiting.
How can I verify Mark Brady Oien, DO's license?
NPPES lists Massachusetts license number MA265312, 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 Mark Brady Oien, DO prescribe under Medicare Part D?
In 2024, Mark Brady Oien, DO had 24 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.