Amy Ilene Katz Gerhardt, M.D.
Obstetrics & Gynecology Physician · Westwood, NJ
Amy Ilene Katz Gerhardt, M.D. is an obstetrics & gynecology physician with a practice address in Westwood, New Jersey, and NPI 1245419928, issued on Oct 30, 2007. Check the license (New Jersey 25MA08776500, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Amy Ilene Katz Gerhardt
- Credential
- M.D.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 25MA08776500 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 333 Old Hook RD Ste 105, Westwood, NJ 07675
- Phone
- (201) 497-0175
- Enumerated
- Oct 30, 2007
- Record last updated
- May 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20101213000139); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,362 in New Jersey → Look up another NPI →
Also registered at 333 Old Hook RD Ste 105
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Malwinder Singh, MDCritical Care Medicine (Internal Medicine) Physician1871558791
Verify Amy Ilene Katz Gerhardt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA08776500Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
14 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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
- Hackensack Meridian Health Medical Group - Specialty Care PCHackensack, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Amy Ilene Katz Gerhardt among 1,362 obstetrics & gynecology physician records in New Jersey
Amy Ilene Katz Gerhardt, M.D. is one of 1,362 obstetrics & gynecology physician records with a practice address in New Jersey. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 41% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2006 · median 2003 among the 900 with a school on file
- Record last updated2021 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 obstetrics & gynecology physician records list a practice address in Westwood
They are 5 of the 382 NPPES records with a practice address in Westwood, and 1,362 obstetrics & gynecology physician records in New Jersey.
All 1,362 in New Jersey → Every provider in Westwood → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Robyn Bilinski, MDWestwood, NJ 076751689880841
- Julia Buldo-LicciardiRiver Vale, NJ 076751376172262
- Elizabeth Delrosario, M.D.Westwood, NJ 076751316012578
- Kennisha Gilbert, M.D.Westwood, NJ 076751356620256
- Elizabeth Paskowski, M.D.Westwood, NJ 076751689676983
- Ruth Schulze, MDWoodcliff Lake, NJ 076771538149752
- Kagendo Kithinji, M.D.Tenafly, NJ 076701992983977
- Rita Knause, MDTenafly, NJ 076701649218173
Common questions
What is Amy Ilene Katz Gerhardt, M.D.'s NPI number?
Amy Ilene Katz Gerhardt, M.D.'s National Provider Identifier (NPI) is 1245419928, issued on Oct 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Amy Ilene Katz Gerhardt, M.D. located?
The NPPES record lists a practice address at 333 Old Hook RD Ste 105, Westwood, NJ, 07675. Phone: (201) 497-0175. Providers update this record themselves, so call before visiting.
How can I verify Amy Ilene Katz Gerhardt, M.D.'s license?
NPPES lists New Jersey license number 25MA08776500, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Amy Ilene Katz Gerhardt, M.D. prescribe under Medicare Part D?
In 2024, Amy Ilene Katz Gerhardt, M.D. had 14 Medicare Part D claims; the average among obstetrics & gynecology physician prescribers was 165. 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.