Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alan Gregory Shamrock, MD

Orthopaedic Surgery Physician in Green Bay, WI · enumerated 2017.

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

National Provider Identifier

1376072819

Verified

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Registry record

Entity type Individual (Type 1)

Name Dr. Alan Gregory Shamrock

Credential MD

Sex Male

Practice address 1726 Shawano Ave, Green Bay, WI, 54303

Phone (920) 496-4700

Enumeration date Jun 8, 2017

Last updated in NPPES Dec 20, 2024

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License R-10836 (IA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 84137-20 (WI) 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
100288844	Medicaid	WI	-

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 Alan Shamrock practice?

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

What is the NPI number for Alan Shamrock?

The National Provider Identifier (NPI) for Alan Shamrock is 1376072819, 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 2024-12-20.