Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ronald Fischer, M.D.

Physical Medicine & Rehabilitation Physician in Chesterfield, MO · enumerated 2006.

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

National Provider Identifier

1508896077

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Registry record

Entity type Individual (Type 1)

Name Dr. Ronald Fischer

Credential M.D.

Sex Male

Practice address 224 S Woods Mill Rd, Ste 570 S, Chesterfield, MO, 63017

Phone (314) 205-6898

Fax (314) 434-8457

Enumeration date Jul 3, 2006

Last updated in NPPES Dec 2, 2016

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License R6J45 (MO) 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
0004598747	Other	MO	AETNA
138778	Other	MO	HEALTHLINK
757749	Other	MO	UNITED HEALTHCARE
000000602384	Other	MO	BLUE CROSS
475249	Other	MO	GROUP HEALTH PLAN

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Ronald Fischer?

Ronald Fischer is registered in NPPES with the primary taxonomy of Physical Medicine & Rehabilitation Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-02.