Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew John Ptaszkiewicz, M. D.

Family Medicine Physician in Windsor, CO · enumerated 2006.

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

National Provider Identifier

1952367880

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew John Ptaszkiewicz

Credential M. D.

Sex Male

Practice address 1683 Main St, Windsor, CO, 80550

Phone (970) 400-7618

Fax (970) 823-9007

Enumeration date Apr 20, 2006

Last updated in NPPES Feb 3, 2026

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 49467 (CO) 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
04380771	Medicaid	CO	-
P00970417	Other	CO	MEDICARE RAILROAD

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

How do I verify Matthew Ptaszkiewicz's NPI record?

Cross-check NPI 1952367880 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1952367880 active?

Yes, as of the latest NPPES snapshot, NPI 1952367880 is active (record last updated 2026-02-03).

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Lawrence Murphy Family Medicine Physician · Windsor, CO NPI 1194774125 Joseph Kauffman Gerontology Nurse Practitioner · Windsor, CO NPI 1750479200 Kimberly Schindler Family Nurse Practitioner · Windsor, CO NPI 1093965063 Alexander Block Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Windsor, CO NPI 1629334495 Karah Cloxton Family Medicine Physician · Windsor, CO NPI 1528326576 Zachary Devilbiss Sports Medicine (Family Medicine) Physician · Windsor, CO NPI 1942615471 Vmd Primary Providers Colorado, Inc Primary Care Clinic/Center · Windsor, CO NPI 1144770041 Agnes Carsen Bahn Family Medicine Physician · Windsor, CO NPI 1386137537

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-03.