Bernard J. Katz, M.D.
Internal Medicine Physician · Valhalla, NY
Bernard J. Katz, M.D. is an internal medicine physician with a practice address in Valhalla, New York, and NPI 1942341581, issued on Feb 8, 2007. Check the license (New York 158968-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Bernard J. Katz
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 158968-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 100 Woods RD, Valhalla, NY 10595
- Phone
- (914) 493-6616
- Enumerated
- Feb 8, 2007
- Record last updated
- Dec 16, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080811000731); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 100 Woods RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marie Abate, PA-CPhysician Assistant1285225524
- Shaimaa AbdallahStudent in an Organized Health Care Education/Training Program1215616321
- Omar Abdelkader, MDStudent in an Organized Health Care Education/Training Program1790571099
- Magdi Abdelrahman, MBBSStudent in an Organized Health Care Education/Training Program1669925178
- Ruba Abdul WahedStudent in an Organized Health Care Education/Training Program1821626011
- Ammar AbdulfattahStudent in an Organized Health Care Education/Training Program1982345740
Verify Bernard J. Katz 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 158968-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% more Medicare Part D claims than the average internal medicine physician in 2024
3,776 Medicare Part D claims for 206 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Metformin Hcl232 claims
- Amlodipine Besylate229 claims
- Omeprazole161 claims
- Atorvastatin Calcium158 claims
- Ibuprofen150 claims
- Gabapentin137 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
- Doctors United, IncYonkers, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bernard J. Katz among 12,067 internal medicine physician records in New York
Bernard J. Katz, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% 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 47% of them.
- NPI issued2007 · 47% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1981 · median 2002 among the 7,221 with a school on file
- Record last updated2015 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
68 internal medicine physician records list a practice address in Valhalla
They are 68 of the 2,105 NPPES records with a practice address in Valhalla, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Valhalla → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ronald Cho, MDValhalla, NY 105951457388977
- Rosemarie Conigliaro, MDValhalla, NY 105951538170717
- Mitchell Fenster, M.D.Valhalla, NY 105951548378573
- Melissa Gennarelli, M.D.Valhalla, NY 105951871557249
- Randy Goldberg, MDValhalla, NY 105951154329936
- Gary Guo, MDValhalla, NY 105951932129582
- Andrew Gutwein, MDValhalla, NY 105951801816483
- Wei-Nchih Lee, MDValhalla, NY 105951750301305
Common questions
What is Bernard J. Katz, M.D.'s NPI number?
Bernard J. Katz, M.D.'s National Provider Identifier (NPI) is 1942341581, issued on Feb 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Bernard J. Katz, M.D. located?
The NPPES record lists a practice address at 100 Woods RD, Valhalla, NY, 10595. Phone: (914) 493-6616. Providers update this record themselves, so call before visiting.
How can I verify Bernard J. Katz, M.D.'s license?
NPPES lists New York license number 158968-1, 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 Bernard J. Katz, M.D. prescribe under Medicare Part D?
In 2024, Bernard J. Katz, M.D. had 3,776 Medicare Part D claims for 206 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.