Mary Elizabeth Obrien, M.D.
Internal Medicine Physician · New York, NY
Mary Elizabeth Obrien, M.D. is an internal medicine physician with a practice address in New York, New York, and NPI 1114079118, issued on Jan 18, 2007. Check the license (New York 140846, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mary Elizabeth Obrien
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 140846 NY
Self-reported in NPPES; status is on the state search - Practice location
- 519 W 114TH St, New York, NY 10027
- Phone
- (212) 854-9842
- Enumerated
- Jan 18, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (212) 854-9851
- Medicaid ID
- 00920030 NY
- Medicare enrollment
- Enrolled (PECOS I20231116000970); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 1977
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 519 W 114TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patricia Anders, N.P.Women's Health Nurse Practitioner1053431262
- Serena Baker, NPFamily Nurse Practitioner1871809962
- Dominic Biney-Amissah, M.D.Internal Medicine Physician1710029228
- Mary Ellen Bovino, RNCollege Health Registered Nurse1427176643
- Christine Contillo, RNCollege Health Registered Nurse1174704092
- Deborah Cusack, NPAdult Health Nurse Practitioner1376660605
Verify Mary Elizabeth Obrien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 140846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
212 Medicare Part D claims for 46 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Amlodipine Besylate16 claims
- Atorvastatin Calcium15 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.
Bills Medicare through one group practice
- New York City Health And Hospitals CorporationNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Elizabeth Obrien among 12,067 internal medicine physician records in New York
Mary Elizabeth Obrien, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1977 · median 2002 among the 7,221 with a school on file
- Record last updated2007 · 61% 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 New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,434 internal medicine physician records list a practice address in New York
They are 2,434 of the 98,468 NPPES records with a practice address in New York, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in New York → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vinod Bhagat, MDNew York, NY 100271396755955
- Dominic Biney-Amissah, M.D.New York, NY 100271710029228
- Naghma Burney, M.D.New York, NY 100271093880361
- Michael Correa, MDNew York, NY 100271083765531
- Carol McLean-Long, M.D.New York, NY 100271023176385
- Savitri Motiram, MDNew York, NY 100271912944398
- Martin Ortiz, M.D.New York, NY 100271467454793
- Hemant Patel, MDNew York, NY 100271760496921
Common questions
What is Mary Elizabeth Obrien, M.D.'s NPI number?
Mary Elizabeth Obrien, M.D.'s National Provider Identifier (NPI) is 1114079118, issued on Jan 18, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Elizabeth Obrien, M.D. located?
The NPPES record lists a practice address at 519 W 114TH St, New York, NY, 10027. Phone: (212) 854-9842. Providers update this record themselves, so call before visiting.
How can I verify Mary Elizabeth Obrien, M.D.'s license?
NPPES lists New York license number 140846, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Elizabeth Obrien, M.D. prescribe under Medicare Part D?
In 2024, Mary Elizabeth Obrien, M.D. had 212 Medicare Part D claims for 46 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.