Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ronald T Schreiber, MD

Geriatric Medicine (Internal Medicine) Physician in Appleton, WI · enumerated 2005.

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

National Provider Identifier

1588658595

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Registry record

Entity type Individual (Type 1)

Name Ronald T Schreiber

Credential MD

Sex Male

Practice address 2600 S Heritage Woods Dr, Appleton, WI, 54915

Phone (920) 225-7875

Fax (920) 993-5003

Enumeration date Sep 6, 2005

Last updated in NPPES Feb 20, 2013

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 30497 (WI) Secondary

207RG0300X Geriatric Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 30497 (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
711290166	Other	WI	MEDICARE PTAN
450030769	Other	WI	MEDICARE PTAN
31756200	Medicaid	WI	-
690100071	Other	WI	MEDICARE PTAN

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

Is NPI 1588658595 active?

Yes, as of the latest NPPES snapshot, NPI 1588658595 is active (record last updated 2013-02-20).

How do I verify Ronald Schreiber's NPI record?

Cross-check NPI 1588658595 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-02-20.