Allen Jay Blaivas, DO
Internal Medicine Physician · New York, NY
Allen Jay Blaivas, DO is an internal medicine physician with a practice address in New York, New York, and NPI 1104830397, issued on Jul 27, 2006. Check the license (New York 236102, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Allen Jay Blaivas
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 236102 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1111 Amsterdam Ave, New York, NY 10025
- Phone
- (212) 523-4000
- Enumerated
- Jul 27, 2006
- Record last updated
- Jan 9, 2026
- Medicare enrollment
- Enrolled (PECOS I20110920000833); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 1999
- Entity
- Type 1 · individual
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Verify Allen Jay Blaivas 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 236102Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Hackensack Meridian Health Medical Group - Specialty Care PCHackensack, NJ
- Progressive Care Medical Group PLLCNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allen Jay Blaivas among 12,067 internal medicine physician records in New York
Allen Jay Blaivas, DO 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1999 · median 2002 among the 7,221 with a school on file
- Record last updated2026 · 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).
2,434 internal medicine physician records list a practice address in New York
They are 2,434 of the 98,468 NPPES records with a practice address in New York, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in New York → Internal Medicine Physician nationwide →
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Common questions
What is Allen Jay Blaivas, DO's NPI number?
Allen Jay Blaivas, DO's National Provider Identifier (NPI) is 1104830397, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Allen Jay Blaivas, DO located?
The NPPES record lists a practice address at 1111 Amsterdam Ave, New York, NY, 10025. Phone: (212) 523-4000. Providers update this record themselves, so call before visiting.
How can I verify Allen Jay Blaivas, DO's license?
NPPES lists New York license number 236102, 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.