Mary Ann O'Brien, MD
Family Medicine Physician · Fort Wayne, IN
Mary Ann O'Brien, MD is a family medicine physician with a practice address in Fort Wayne, Indiana, and NPI 1013902162, issued on Sep 14, 2005. Check the license (Indiana 01037346A, as entered in NPPES) on the Medical Licensing Board of Indiana; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary Ann O'Brien
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 01037346A IN
Self-reported in NPPES; status is on the state search - Practice location
- 3909 New Vision Dr, Fort Wayne, IN 46845
- Phone
- (260) 496-6602
- Enumerated
- Sep 14, 2005
- Record last updated
- Sep 20, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (260) 969-3065
- Medicaid IDs
- 200033370 IN
2517226 OH
104874481 MI - Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,506 in Indiana → Look up another NPI →
Also registered at 3909 New Vision Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stephanie AmstutzRegistered Dietitian1831566348
- Erika Arnold, NP-CNurse Practitioner1932522695
- Amanjit BanwaitNurse Practitioner1881314631
- Kristen BischoffRegistered Dietitian1861846636
- Brooke Bohnstedt, NP-CFamily Medicine Physician1588067300
- Sean BrennanFamily Medicine Physician1821103698
Verify Mary Ann O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01037346ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mary Ann O'Brien among 3,506 family medicine physician records in Indiana
Mary Ann O'Brien, MD is one of 3,506 family medicine physician records with a practice address in Indiana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 81% newer
- In a Medicare fileNo · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2013 · 48% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
249 family medicine physician records list a practice address in Fort Wayne
They are 249 of the 9,203 NPPES records with a practice address in Fort Wayne, and 3,506 family medicine physician records in Indiana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,506 in Indiana → Every provider in Fort Wayne → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sean BrennanFort Wayne, IN 468451821103698
- Rebecca Case, M.D.Fort Wayne, IN 468451619952280
- Michael Conway, MDFort Wayne, IN 468451134184781
- Sheryl Fergusson, D.O.Fort Wayne, IN 468451851406664
- Richard Kelty, M.D.Fort Wayne, IN 468451326153941
- Yvonne Lubia, MDFort Wayne, IN 468451922116680
- ,birute Pumputis, MDFort Wayne, IN 468451326048455
- Jason Row, MDFort Wayne, IN 468451558399097
Common questions
What is Mary Ann O'Brien, MD's NPI number?
Mary Ann O'Brien, MD's National Provider Identifier (NPI) is 1013902162, issued on Sep 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ann O'Brien, MD located?
The NPPES record lists a practice address at 3909 New Vision Dr, Fort Wayne, IN, 46845. Phone: (260) 496-6602. Providers update this record themselves, so call before visiting.
How can I verify Mary Ann O'Brien, MD's license?
NPPES lists Indiana license number 01037346A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.