NPPES file of Aug 9, 2026

Martin Irwin, M.D.

Psychiatry Physician · Tarrytown, NY

Martin Irwin, M.D. is a psychiatry physician with a practice address in Tarrytown, New York, and NPI 1427235993, issued on Jan 28, 2008. Check the license (New York 174046-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1427235993
Name
Martin Irwin
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
174046-1 NY
Self-reported in NPPES; status is on the state search
Practice location
455 Martling Ave, Tarrytown, NY 10591
Phone
(315) 727-1825
Enumerated
Jan 28, 2008
Record last updated
Oct 14, 2013 (not updated in 13 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Martin Irwin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
    Search for license 174046-1
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the New York license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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95% fewer Medicare Part D claims than the average psychiatry physician in 2024

53 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Martin Irwin53
  2. Specialty average1,000

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.

Martin Irwin among 6,589 psychiatry physician records in New York

Martin Irwin, M.D. 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 2008, is newer than 56% of them.

  • NPI issued2008 · 56% of these records are older, 38% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileNo · 39% of these records are
  • Record last updated2013 · 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).

8 psychiatry physician records list a practice address in Tarrytown

They are 8 of the 540 NPPES records with a practice address in Tarrytown, and 6,589 psychiatry physician records in New York.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Steven Bogen, M.D.Sleepy Hollow, NY 105911588715551
  2. Richard Brent, M.D.Sleepy Hollow, NY 105911760536635
  3. Bonita Chapman, M.D.Sleepy Hollow, NY 105911518020247
  4. Kaia Heimarck, M.D.Sleepy Hollow, NY 105911790903185
  5. Ruth Martin, M.D.Sleepy Hollow, NY 105911073663795
  6. Sheshakumari Murthy, MDTarrytown, NY 105911326175506
  7. Samad Namin, MDTarrytown, NY 105911548480577
  8. Gale Organist, M.D.Tarrytown, NY 105911235290032

Common questions

What is Martin Irwin, M.D.'s NPI number?

Martin Irwin, M.D.'s National Provider Identifier (NPI) is 1427235993, issued on Jan 28, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Martin Irwin, M.D. located?

The NPPES record lists a practice address at 455 Martling Ave, Tarrytown, NY, 10591. Phone: (315) 727-1825. Providers update this record themselves, so call before visiting.

How can I verify Martin Irwin, M.D.'s license?

NPPES lists New York license number 174046-1, 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 Martin Irwin, M.D. prescribe under Medicare Part D?

In 2024, Martin Irwin, M.D. had 53 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.