Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Robert F Marschke Jr., M.D.

Hematology & Oncology Physician in Fort Collins, CO · enumerated 2005.

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

National Provider Identifier

1669455754

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Registry record

Entity type Individual (Type 1)

Name Dr. Robert F Marschke Jr.

Credential M.D.

Sex Male

Practice address 2315 E Harmony Rd, #110, Fort Collins, CO, 80528

Phone (970) 212-7600

Fax (970) 212-7637

Enumeration date Nov 22, 2005

Last updated in NPPES Feb 10, 2012

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 31487 (AZ) Secondary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 35397 (CO) Primary

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 6089A (WY) Secondary

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
329070	Medicaid	AZ	-
86080015085259A046	Other	AZ	TRIWEST
110030404	Other	AZ	RAILROAD MEDICARE

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.

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Frequently asked questions

How do I verify Robert Marschke's NPI record?

Cross-check NPI 1669455754 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669455754 active?

Yes, as of the latest NPPES snapshot, NPI 1669455754 is active (record last updated 2012-02-10).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-02-10.