Mary Grace Obrien, N.P.
Psychiatric/Mental Health Nurse Practitioner · Jefferson Valley, NY
Mary Grace Obrien, N.P. is a psychiatric/mental health nurse practitioner with a practice address in Jefferson Valley, New York, and NPI 1780910349, issued on Nov 2, 2009. Check the license (New York F400751, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Grace Obrien
- Credential
- N.P.
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- F400751 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3651 Hill Blvd, Jefferson Valley, NY 10535
- Phone
- (914) 384-2075
- Enumerated
- Nov 2, 2009
- Record last updated
- Nov 2, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (914) 243-5895
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 4,129 in New York → Look up another NPI →
Also registered at 3651 Hill Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Myrna Hernandez, M.D.Psychiatry Physician1831318179
- Sylvain Nakkab, M.D.Child & Adolescent Psychiatry Physician1063631307
- Pilar Verdesoto, LCSW RClinical Social Worker1124107743
Verify Mary Grace Obrien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F400751Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
36 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Alprazolam13 claims
- Dextroamphetamine-Amphetamine12 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.
Mary Grace Obrien among 4,129 psychiatric/mental health nurse practitioner records in New York
Mary Grace Obrien, N.P. is one of 4,129 psychiatric/mental health nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 16% of them.
- NPI issued2009 · 16% of these records are older, 82% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2009 · 34% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1 psychiatric/mental health nurse practitioner record lists a practice address in Jefferson Valley
They are 1 of the 91 NPPES records with a practice address in Jefferson Valley, and 4,129 psychiatric/mental health nurse practitioner records in New York.
All 4,129 in New York → Every provider in Jefferson Valley → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Sarah Lyn Arias-MagallonaKatonah, NY 105361114300498
- Jewel Barboza, NPPKatonah, NY 105361063868099
- Jacqueline Dongmo MekontchouKatonah, NY 105361225453715
- Enoh Ekokotu, NURSE PRACTITIONERKatonah, NY 105361316424625
- Katrina Im, PMHNP-BCKatonah, NY 105361619463890
- Melissa Jacobson, NPKatonah, NY 105361174875421
- Magdalena Majcher-Tascio, PMHNP-BCKatonah, NY 105361265849202
- Kathryn McDonnell, DNP, PMHNP, FNP-BCKatonah, NY 105361003243544
Common questions
What is Mary Grace Obrien, N.P.'s NPI number?
Mary Grace Obrien, N.P.'s National Provider Identifier (NPI) is 1780910349, issued on Nov 2, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mary Grace Obrien, N.P. located?
The NPPES record lists a practice address at 3651 Hill Blvd, Jefferson Valley, NY, 10535. Phone: (914) 384-2075. Providers update this record themselves, so call before visiting.
How can I verify Mary Grace Obrien, N.P.'s license?
NPPES lists New York license number F400751, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Grace Obrien, N.P. prescribe under Medicare Part D?
In 2024, Mary Grace Obrien, N.P. had 36 Medicare Part D claims; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.