Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peter J Hohnstein, MD

Anesthesiology Physician in Waterloo, IA · enumerated 2006.

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

National Provider Identifier

1538104039

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Registry record

Entity type Individual (Type 1)

Name Dr. Peter J Hohnstein

Credential MD

Sex Male

Practice address 2710 Saint Francis Dr, Suite 410, Waterloo, IA, 50702

Phone (319) 272-5000

Fax (319) 272-5264

Enumeration date Jun 18, 2006

Last updated in NPPES Jul 3, 2024

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License MD-32592 (IA) 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
0189688	Medicaid	IA	-

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

Where does Peter Hohnstein practice?

The practice location on file with NPPES is in Waterloo, IA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Peter Hohnstein?

The National Provider Identifier (NPI) for Peter Hohnstein is 1538104039, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-03.