Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marlow Perez, MD

Q: What is the NPI number for Marlow Perez?

The National Provider Identifier (NPI) for Marlow Perez is 1881660645, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in Castle Rock, CO · enumerated 2006.

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

National Provider Identifier

1881660645

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Registry record

Entity type Individual (Type 1)

Name Dr. Marlow Perez

Credential MD

Sex Male

Practice address 831 S Perry, Suite 200, Castle Rock, CO, 80104

Phone (303) 218-7774

Fax (303) 805-7732

Enumeration date Feb 23, 2006

Last updated in NPPES Mar 16, 2016

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 49594 (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
P01540302	Other	CO	MEDICARE RR
37958071	Medicaid	CO	-

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 Marlow Perez practice?

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

What is the NPI number for Marlow Perez?

The National Provider Identifier (NPI) for Marlow Perez is 1881660645, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-16.