Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allen F. Fischer, MD

Neonatal-Perinatal Medicine Physician in Walnut Creek, CA · enumerated 2006.

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

National Provider Identifier

1124106208

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Allen F. Fischer

Credential MD

Sex Male

Practice address 1425 S Main St, Walnut Creek, CA, 94596

Phone (925) 295-4000

Enumeration date Nov 2, 2006

Last updated in NPPES Nov 30, 2021

Taxonomy & licenses

2080N0001X Neonatal-Perinatal Medicine Physician Allopathic & Osteopathic Physicians · License G49761 (CA) 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
00G497610	Medicaid	CA	-

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

How do I verify Allen Fischer's NPI record?

Cross-check NPI 1124106208 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1124106208 active?

Yes, as of the latest NPPES snapshot, NPI 1124106208 is active (record last updated 2021-11-30).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-30.