Dr. Mary Elizabeth Obrien, MD
- Part D claims, 2024
- 212
- Industry payments
- $44
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 160 Water St, New York, NY 10038
- Practice phone
- Call (212) 939-2304
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Renaissance Diagnostic & Treatment Center
Multi-specialty group site · New York, New York
Find Dr. Obrien's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mary Elizabeth Obrien is an internist in New York, New York
Dr. Obrien practices at Renaissance Diagnostic & Treatment Center in New York, New York.
Dr. Obrien's NPI, 1114079118, was assigned on January 18, 2007. Dr. Obrien graduated from Harvard Medical School in 1977. Dr. Obrien holds New York license 140846.
- NPI
- 1114079118NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022465814
- NPI enumeration date
- January 18, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (212) 939-2304
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 75
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Elizabeth Obrien practices at Renaissance Diagnostic & Treatment Center in New York, New York
Dr. Obrien's primary practice is Renaissance Diagnostic & Treatment Center, at 160 Water St, New York, NY 10038. The practice phone is (212) 939-2304.
- Renaissance Diagnostic & Treatment Center160 Water St, New York, NY 10038Phone(212) 939-2304
Source: Dmand AI Affiliation Data
Dr. Mary Elizabeth Obrien is affiliated with 1 site of care and 1 medical group
Dr. Obrien's primary practice is Renaissance Diagnostic & Treatment Center in New York, New York. The medical group on file is NYC Health + Hospitals.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mary Elizabeth Obrien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Obrien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Renaissance Diagnostic & Treatment Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mary Elizabeth Obrien is one of 9,643 internists in New York
Internal medicine is Dr. Obrien's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Obrien is licensed in New York.
Specialties and state licenses
- Internal medicine, New YorkPrimary
Internists near Dr. Obrien
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mary Elizabeth Obrien's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Obrien's median patient age at 66, with 77% women.
Dr. Obrien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women77%
- Men21%
Source: Dmand AI Patient Panel Data
Dr. Mary Elizabeth Obrien wrote 212 Medicare Part D claims in 2024
In 2024, Dr. Obrien wrote 212 Medicare Part D claims for 46 patients. 76% of them were for generic drugs. CMS names the drug for 31 of them, across 2 drugs with 11 or more claims each, at $184 in total drug cost.
Dr. Obrien's Part D claims by kind of drug, 2024
- Generic162 claims76%
- Brand-name50 claims24%
Dr. Obrien's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mary Elizabeth Obrien takes part in Medicare
Dr. Obrien accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mary Elizabeth Obrien received $44 in industry payments from 2017 to 2025
CMS Open Payments shows 2 general payments to Dr. Obrien from 2 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. ViiV Healthcare Company paid the most, $32.
General payments to Dr. Obrien by program year, 2017 to 2025
Companies that paid Dr. Obrien the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mary Elizabeth Obrien graduated from Harvard Medical School
Dr. Obrien graduated from Harvard Medical School in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mary Elizabeth Obrien's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mary Elizabeth Obrien
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mary Elizabeth Obrien's NPI number?
Dr. Mary Elizabeth Obrien's NPI number is 1114079118. It was assigned on January 18, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Elizabeth Obrien?
Dr. Mary Elizabeth Obrien is an internist in New York, New York. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Elizabeth Obrien practice?
Dr. Obrien practices at 160 Water St, New York, NY 10038. Dr. Obrien's primary practice is Renaissance Diagnostic & Treatment Center in New York, New York.
What is Dr. Mary Elizabeth Obrien's office phone number?
The practice phone on file for Dr. Obrien is (212) 939-2304.
What is Dr. Mary Elizabeth Obrien's medical license number?
Dr. Obrien holds New York license 140846.
What medical group is Dr. Mary Elizabeth Obrien part of?
Dr. Obrien is linked to NYC Health + Hospitals.
Does Dr. Mary Elizabeth Obrien accept Medicare?
Yes. CMS lists Dr. Obrien as accepting Medicare assignment.
Where did Dr. Mary Elizabeth Obrien go to medical school?
Dr. Obrien graduated from Harvard Medical School in 1977.
What drugs does Dr. Mary Elizabeth Obrien prescribe most?
In 2024 Medicare Part D data, Dr. Obrien's most prescribed drugs by claims were Amlodipine Besylate and Atorvastatin Calcium.
Has Dr. Mary Elizabeth Obrien received payments from drug or device companies?
CMS Open Payments shows $44 in general payments to Dr. Obrien from 2 companies from 2017 to 2025. The largest total came from ViiV Healthcare Company.
How long has Dr. Mary Elizabeth Obrien been practicing?
Dr. Obrien graduated from medical school in 1977, 49 years ago.
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