Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Peter S Diamond, M.D.

Cardiovascular Disease Physician in Elkhorn, WI · enumerated 2006.

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

National Provider Identifier

1730126954

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Registry record

Entity type Individual (Type 1)

Name Peter S Diamond

Credential M.D.

Sex Male

Practice address W3985 County Road Nn, Elkhorn, WI, 53121

Phone (262) 741-2000

Fax (262) 741-2180

Enumeration date May 31, 2006

Last updated in NPPES Apr 6, 2023

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 67017 (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
060041167	Other	IL	RRMC-LOCALITY 16
L71656	Other	IL	MEDICARE PIN-LOCALITY 15
100048791	Medicaid	WI	-
L57038	Other	IL	MEDICARE PIN-LOCALITY 16
4064709	Other	IL	AETNA
1316998578	Other	IL	NPI GROUP PRACTICE
1616378	Other	ID	BCBS

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 is the NPI number for Peter Diamond?

The National Provider Identifier (NPI) for Peter Diamond is 1730126954, a Type 1 (individual) record in the CMS NPPES registry.

Where does Peter Diamond practice?

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

Other providers at this practice address

Browse all →

Abdullah Fayyad Gastroenterology Physician · Elkhorn, WI NPI 1568466019 Dilip Patel Emergency Medicine Physician · Elkhorn, WI NPI 1144204264 Michele Stueve Physical Medicine & Rehabilitation Physician · Elkhorn, WI NPI 1477526887 Aurora Pharmacy Inc Clinic Pharmacy · Elkhorn, WI NPI 1700810926 Paul Angermeier Anatomic Pathology & Clinical Pathology Physician · Elkhorn, WI NPI 1417982836 Midwest Emergency Associates - Lakeland, Sc Emergency Medicine Physician · Elkhorn, WI NPI 1407871155 Jeffrey Tiemstra Family Medicine Physician · Elkhorn, WI NPI 1336252238 Michael Hobbs Hospitalist Physician · Elkhorn, WI NPI 1073620696

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-06.