Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Karen Ann Bleser, M.D.

Internal Medicine Physician in Schenectady, NY · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1609890805

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Registry record

Entity type Individual (Type 1)

Name Karen Ann Bleser

Credential M.D.

Sex Female

Practice address 1201 Nott St, Suite 102, Schenectady, NY, 12308

Phone (518) 382-7500

Fax (518) 382-7572

Enumeration date Jul 27, 2006

Last updated in NPPES Mar 25, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 241705 (NY) Primary

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 241705 (NY) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
300750	Other	NY	SENIOR WHOLE HEALTH
7964902	Other	NY	AETNA
9042544	Other	NY	MVP HEALTHCARE
088CX1	Other	NY	EMPIRE BLUECROSS
143316	Other	NY	GHI/HMO
PRC110118544	Other	NY	CDPHP
02845710	Medicaid	NY	-
100127000085	Other	NY	FIDELIS

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1609890805 active?

Yes, as of the latest NPPES snapshot, NPI 1609890805 is active (record last updated 2010-03-25).

How do I verify Karen Bleser's NPI record?

Cross-check NPI 1609890805 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-25.