Mark C. Singer, MD
Psychiatry Physician · New York, NY
Mark C. Singer, MD is a psychiatry physician with a practice address in New York, New York, and NPI 1801854997, issued on May 1, 2006. Check the license (New York 203555, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mark C. Singer
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 203555 NY
Self-reported in NPPES; status is on the state search - Practice location
- 55 E 87TH St, New York, NY 10128
- Phone
- (212) 831-9551
- Enumerated
- May 1, 2006
- Record last updated
- Mar 24, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (212) 831-9551
- Medicaid ID
- 01665374 NY
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 6,589 in New York → Look up another NPI →
Also registered at 55 E 87TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Yan ZhaoRegistered Nurse1316699176
Verify Mark C. Singer 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 203555Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average psychiatry physician in 2024
163 Medicare Part D claims for 18 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Bupropion Xl36 claims
- Fluoxetine Hcl31 claims
- Zolpidem Tartrate22 claims
- Sertraline Hcl11 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.
Mark C. Singer among 6,589 psychiatry physician records in New York
Mark C. Singer, 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 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 65% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 39% of these records are
- Record last updated2015 · 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
- Harold Bronheim, M.D.New York, NY 101281790773372
- Susan Clarvit, MDNew York, NY 101281508853805
- David Corwin, M.D.New York, NY 101281770538381
- Charles Entelis, M.D.New York, NY 101281447264171
- Hector Goa, MDNew York, NY 101281003835182
- Sylvia Karasu, M.D.New York, NY 101281083610240
- Lauri Liskin, MDNew York, NY 101281235248261
- Allison Lomonaco, MDNew York, NY 101281841309028
Common questions
What is Mark C. Singer, MD's NPI number?
Mark C. Singer, MD's National Provider Identifier (NPI) is 1801854997, issued on May 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark C. Singer, MD located?
The NPPES record lists a practice address at 55 E 87TH St, New York, NY, 10128. Phone: (212) 831-9551. Providers update this record themselves, so call before visiting.
How can I verify Mark C. Singer, MD's license?
NPPES lists New York license number 203555, 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 Mark C. Singer, MD prescribe under Medicare Part D?
In 2024, Mark C. Singer, MD had 163 Medicare Part D claims for 18 beneficiaries; 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.