David Klein, DO
Internal Medicine Physician · Brooklyn, NY
David Klein, DO is an internal medicine physician with a practice address in Brooklyn, New York, and NPI 1508904624, issued on Feb 1, 2007. Check the license (New York 227403-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- David Klein
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 227403-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 3245 Nostrand Ave, Brooklyn, NY 11229
- Phone
- (718) 403-3519
- Enumerated
- Feb 1, 2007
- Record last updated
- May 2, 2024
- Entity
- Type 1 · individual
Also registered at 3245 Nostrand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Samantha Jagger, M.D.Cardiovascular Disease Physician1245412725
- Narayanna Krishnan, MDPediatrics Physician1295777332
- Sejal Mair, PTPhysical Therapist1518297407
Verify David Klein 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 227403-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
53 Medicare Part D claims for 19 beneficiaries, against an average of 3,176 among the 108,855 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.
1,497 internal medicine physician records list a practice address in Brooklyn
They are 1,497 of the 64,057 NPPES records with a practice address in Brooklyn, and 12,067 internal medicine physician records in New York.
All 1,497 in Brooklyn → All 12,067 in New York → Every provider in Brooklyn →
Other internal medicine physician records in New York
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- Jamsheed Abadi, MDBrooklyn, NY1477537496
- Antonieta Abarientos, MDNew Rochelle, NY1649285123
- Zurab Abayev, M.D.Brooklyn, NY1841283058
- Ehab Abaza, MDNew York, NY1114507555
- Vaidarshi Abbagoni, MDNew York, NY1871237495
- Muhammad AbbasRichmond Hill, NY1053996587
Common questions
What is David Klein, DO's NPI number?
David Klein, DO's National Provider Identifier (NPI) is 1508904624, issued on Feb 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is David Klein, DO located?
The NPPES record lists a practice address at 3245 Nostrand Ave, Brooklyn, NY, 11229. Phone: (718) 403-3519. Providers update this record themselves, so call before visiting.
How can I verify David Klein, DO's license?
NPPES lists New York license number 227403-1, 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 David Klein, DO prescribe under Medicare Part D?
In 2024, David Klein, DO had 53 Medicare Part D claims for 19 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.