Claude Simon Gerstenhaber, MD
Anesthesiology Physician · West Islip, NY
Claude Simon Gerstenhaber, MD is an anesthesiology physician with a practice address in West Islip, New York, and NPI 1114957685, issued on Jul 3, 2006. Check the license (New York 193517, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Claude Simon Gerstenhaber
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- 193517 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Montauk Hwy, West Islip, NY 11795
- Phone
- (631) 376-4088
- Enumerated
- Jul 3, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 01881350 NY
- Medicare enrollment
- Enrolled (PECOS I20111013000178); accepts Medicare assignment
- Medical or professional school
- Medical College Of Pennsylvania, 1992
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 5,062 in New York → Look up another NPI →
Also registered at 1000 Montauk Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samantha Ahearn, PA-CPhysician Assistant1952279572
- Michele Ahlers, NURSE PRACTITIONERAdult Health Nurse Practitioner1063037869
- Fahim Ahmed, D.O.Emergency Medicine Physician1619904372
Verify Claude Simon Gerstenhaber 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 193517Check 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 anesthesiology physician in 2024
65 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Mesalamine12 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.
Bills Medicare through one group practice
- Long Island Anesthesiologists, PLLCWest Islip, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Claude Simon Gerstenhaber among 5,062 anesthesiology physician records in New York
Claude Simon Gerstenhaber, 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 52% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1992 · median 2006 among the 3,612 with a school on file
- Record last updated2007 · 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).
35 anesthesiology physician records list a practice address in West Islip
They are 35 of the 1,107 NPPES records with a practice address in West Islip, and 5,062 anesthesiology physician records in New York.
All 5,062 in New York → Every provider in West Islip → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Michael Bianco, MDWest Islip, NY 117951649258344
- Alfredo Cabusora, MDWest Islip, NY 117951477537983
- Rodolfo Domingo, MDWest Islip, NY 117951205813003
- Don Han, MDWest Islip, NY 117951508843111
- Kwang Ho Kim, MDWest Islip, NY 117951528045242
- Vemkata Maddineni, M.D.West Islip, NY 117951811969546
- William Maiorino, MDWest Islip, NY 117951508840174
- Bimal Massand, MDWest Islip, NY 117951407830821
Common questions
What is Claude Simon Gerstenhaber, MD's NPI number?
Claude Simon Gerstenhaber, MD's National Provider Identifier (NPI) is 1114957685, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Claude Simon Gerstenhaber, MD located?
The NPPES record lists a practice address at 1000 Montauk Hwy, West Islip, NY, 11795. Phone: (631) 376-4088. Providers update this record themselves, so call before visiting.
How can I verify Claude Simon Gerstenhaber, MD's license?
NPPES lists New York license number 193517, 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 Claude Simon Gerstenhaber, MD prescribe under Medicare Part D?
In 2024, Claude Simon Gerstenhaber, MD had 65 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.