Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Nathan Roberto Fischer, M.D.

Specialist in Bloomfield, CT · enumerated 2006.

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

National Provider Identifier

1932291523

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Registry record

Entity type Individual (Type 1)

Name Dr. Nathan Roberto Fischer

Credential M.D.

Sex Male

Practice address Bloomfield, CT, 06002

Phone (860) 242-6261

Fax (860) 243-5184

Enumeration date Sep 29, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 015870 (CT) Primary

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
746105	Other	CT	CONNECTICARE
1158708	Medicaid	CT	-
HAP093	Other	CT	OXFORD
OPO951	Other	CT	ASC HEALTHNET
010015870CT05	Other	CT	ANTHEM

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 1932291523 active?

Yes, as of the latest NPPES snapshot, NPI 1932291523 is active (record last updated 2007-07-08).

How do I verify Nathan Fischer's NPI record?

Cross-check NPI 1932291523 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 2007-07-08.