NPPES file of Aug 9, 2026

Mark Siegel, MD

Anesthesiology Physician · New York, NY

Mark Siegel, MD is an anesthesiology physician with a practice address in New York, New York, and NPI 1376783928, issued on Feb 23, 2009. Check the license (New York 133717-1, 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
1376783928
Name
Mark Siegel
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
133717-1 NY
Self-reported in NPPES; status is on the state search
Practice location
19 E. 98TH Street, New York, NY 10029
Phone
(212) 241-2891
Enumerated
Feb 23, 2009
Record last updated
Feb 23, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(212) 241-1572
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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Also registered at 19 E. 98TH Street

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Adrienne Zhan, NPAdult Health Nurse Practitioner1902356793

Verify Mark Siegel 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 133717-1
    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

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97% fewer Medicare Part D claims than the average anesthesiology physician in 2024

12 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Mark Siegel12
  2. Specialty average402

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 Siegel among 5,062 anesthesiology physician records in New York

Mark Siegel, MD is one of 5,062 anesthesiology physician records with a practice address in New York. 77% 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 60% of them.

  • NPI issued2009 · 60% of these records are older, 36% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2009 · 56% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,418 anesthesiology physician records list a practice address in New York

They are 1,418 of the 98,468 NPPES records with a practice address in New York, and 5,062 anesthesiology physician records in New York.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Andrey Apinis, M.D.New York, NY 100291013999150
  2. Yaakov Beilin, M.D.New York, NY 100291902888605
  3. Howard Bernstein, M.D.New York, NY 100291376526772
  4. Isabelle Deleon, M.D.New York, NY 100291780666149
  5. James Eisenkraft, M.D.New York, NY 100291104808575
  6. Gregory Fischer, M.D.New York, NY 100291154303535
  7. Elizabeth Frost, M.D.New York, NY 100291649253022
  8. George Gabrielson, M.D.New York, NY 100291386627727

Common questions

What is Mark Siegel, MD's NPI number?

Mark Siegel, MD's National Provider Identifier (NPI) is 1376783928, issued on Feb 23, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Mark Siegel, MD located?

The NPPES record lists a practice address at 19 E. 98TH Street, New York, NY, 10029. Phone: (212) 241-2891. Providers update this record themselves, so call before visiting.

How can I verify Mark Siegel, MD's license?

NPPES lists New York license number 133717-1, 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 Mark Siegel, MD prescribe under Medicare Part D?

In 2024, Mark Siegel, MD had 12 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. 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.