Mitchell Kleinberg, M.D.
Pediatric Adolescent Medicine Physician · Holbrook, NY
Mitchell Kleinberg, M.D. is a pediatric adolescent medicine physician with a practice address in Holbrook, New York, and NPI 1447367537, issued on Aug 24, 2006. Check the license (New York 154133, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Mitchell Kleinberg
- Credential
- M.D.
- Primary taxonomy
- Pediatric Adolescent Medicine Physician 2080A0000X
- License number
- 154133 NY
Self-reported in NPPES; status is on the state search - Practice location
- 270 Union Ave, Holbrook, NY 11741
- Phone
- (631) 558-4442
- Enumerated
- Aug 24, 2006
- Record last updated
- Apr 10, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (631) 471-3039
- Medicaid ID
- 00765857 NY
- Entity
- Type 1 · individual
8 nearest pediatric adolescent medicine physician records → All 372 in New York → Look up another NPI →
Also registered at 270 Union Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amanda Anaya, NPPediatric Adolescent Medicine Physician1558082149
- Laci Cook, CPNPPediatric Nurse Practitioner1073906749
- Danielle D'Alleva-Byrne, PAPhysician Assistant1801966015
- Dawn Dawson, CPNPNurse Practitioner1801069919
- Victoria DennisPediatric Nurse Practitioner1992340871
- Robert Festa, M.D., LICPediatric Adolescent Medicine Physician1265549356
Verify Mitchell Kleinberg 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 154133Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $93.02
4 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 859 providers of this specialty with any payment received $389.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mitchell Kleinberg among 372 pediatric adolescent medicine physician records in New York
Mitchell Kleinberg, M.D. is one of 372 pediatric adolescent medicine physician records with a practice address in New York. 48% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 30% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2012 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080A0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 pediatric adolescent medicine physician records list a practice address in Holbrook
They are 5 of the 511 NPPES records with a practice address in Holbrook, and 372 pediatric adolescent medicine physician records in New York.
All 372 in New York → Every provider in Holbrook → Pediatric Adolescent Medicine Physician nationwide →
The 8 pediatric adolescent medicine physician records with the nearest ZIP codes
- Amanda Anaya, NPHolbrook, NY 117411558082149
- Robert Festa, M.D., LICHolbrook, NY 117411265549356
- Michael Nussbaum, M.D.Holbrook, NY 117411356458442
- Phyllis Simon-Goldman, MDHolbrook, NY 117411245431477
- Steven Brunner, M.D.Huntington, NY 117431942216874
- Anne Conrad, M.D.Huntington, NY 117431154337087
- Michael Grosso, M.D.Huntington, NY 117431184634503
- Paul Shineman, M.D.Huntington, NY 117431568478485
Common questions
What is Mitchell Kleinberg, M.D.'s NPI number?
Mitchell Kleinberg, M.D.'s National Provider Identifier (NPI) is 1447367537, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell Kleinberg, M.D. located?
The NPPES record lists a practice address at 270 Union Ave, Holbrook, NY, 11741. Phone: (631) 558-4442. Providers update this record themselves, so call before visiting.
How can I verify Mitchell Kleinberg, M.D.'s license?
NPPES lists New York license number 154133, 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.
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.