David Katz, MD
Internal Medicine Physician · Derby, CT
David Katz, MD is an internal medicine physician with a practice address in Derby, Connecticut, and NPI 1528138435, issued on Nov 8, 2006. Check the license (Connecticut 031397, as entered in NPPES) on the Connecticut Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- David Katz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 031397 CT
Self-reported in NPPES; status is on the state search - Practice location
- 252 Seymour Ave, Derby, CT 06418
- Phone
- (203) 732-1370
- Enumerated
- Nov 8, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (203) 732-7310
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify David Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 031397Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
David Katz among 2,623 internal medicine physician records in Connecticut
David Katz, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileNo · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
47 internal medicine physician records list a practice address in Derby
They are 47 of the 453 NPPES records with a practice address in Derby, and 2,623 internal medicine physician records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,623 in Connecticut → Every provider in Derby → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kanwardeep Arora, MDDerby, CT 064181508026428
- Earl Baker, MDDerby, CT 064181265635148
- Frederick Browne, MDDerby, CT 064181588641955
- Seema Dsouza, M.D.Derby, CT 064181851373187
- Robert Hyde, MDDerby, CT 064181902011885
- Michael KesslerDerby, CT 064181770672180
- Gail Labadia, M.D.Derby, CT 064181649202144
- Sanjay MalhotraDerby, CT 064181497946339
Common questions
What is David Katz, MD's NPI number?
David Katz, MD's National Provider Identifier (NPI) is 1528138435, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Katz, MD located?
The NPPES record lists a practice address at 252 Seymour Ave, Derby, CT, 06418. Phone: (203) 732-1370. Providers update this record themselves, so call before visiting.
How can I verify David Katz, MD's license?
NPPES lists Connecticut license number 031397, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.