Walker Daniel Keenan, MD
Psychiatry Physician · New York, NY
Walker Daniel Keenan, MD is a psychiatry physician with a practice address in New York, New York, and NPI 1841797313, issued on Apr 10, 2018. Check the license (New York 310763, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Walker Daniel Keenan
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 310763 NY
Self-reported in NPPES; status is on the state search - Practice location
- 2121 7TH Ave Apt 8C, New York, NY 10027
- Phone
- (781) 534-8190
- Enumerated
- Apr 10, 2018
- Record last updated
- Jul 17, 2023
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 6,589 in New York → Look up another NPI →
Verify Walker Daniel Keenan 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 310763Check 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 psychiatry physician in 2024
73 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Quetiapine Fumarate13 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.
Walker Daniel Keenan among 6,589 psychiatry physician records in New York
Walker Daniel Keenan, MD is one of 6,589 psychiatry physician records with a practice address in New York. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 85% of them.
- NPI issued2018 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 39% of these records are
- Record last updated2023 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,604 psychiatry physician records list a practice address in New York
They are 2,604 of the 98,468 NPPES records with a practice address in New York, and 6,589 psychiatry physician records in New York.
All 6,589 in New York → Every provider in New York → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jacob Appel, MDNew York, NY 100271174765762
- Edward Bartlett, M.D.New York, NY 100271750515987
- Stephen Botek, M.D.New York, NY 100271568670461
- Katharine Brewster, MDNew York, NY 100271144616210
- Anthony CarinoNew York, NY 100271457513392
- Carol Garfein, MDNew York, NY 100271831272202
- Faisal Khan, MDNew York, NY 100271710391552
- Claudia Nelson, M.D. M.P.H.New York, NY 100271932242930
Common questions
What is Walker Daniel Keenan, MD's NPI number?
Walker Daniel Keenan, MD's National Provider Identifier (NPI) is 1841797313, issued on Apr 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Walker Daniel Keenan, MD located?
The NPPES record lists a practice address at 2121 7TH Ave Apt 8C, New York, NY, 10027. Phone: (781) 534-8190. Providers update this record themselves, so call before visiting.
How can I verify Walker Daniel Keenan, MD's license?
NPPES lists New York license number 310763, 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 Walker Daniel Keenan, MD prescribe under Medicare Part D?
In 2024, Walker Daniel Keenan, MD had 73 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.