Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peter George Perakos, MD

Gastroenterology Physician in Cheyenne, WY · enumerated 2005.

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

National Provider Identifier

1639152614

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Registry record

Entity type Individual (Type 1)

Name Dr. Peter George Perakos

Credential MD

Sex Male

Practice address 5050 Powderhouse Rd, Cheyenne, WY, 82009

Phone (307) 634-1311

Fax (307) 634-1271

Enumeration date Nov 23, 2005

Last updated in NPPES Nov 16, 2015

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 3505A (WY) 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
100332100	Medicaid	WY	-

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

What specialty is Peter Perakos?

Peter Perakos is registered in NPPES with the primary taxonomy of Gastroenterology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-11-16.