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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Sean E Markey, M.D.

Neurological Surgery Physician in Denver, CO · enumerated 2006.

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

National Provider Identifier

1235165705

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Registry record

Entity type Individual (Type 1)
Name Dr. Sean E Markey
Credential M.D.
Sex Male
Practice address Denver, CO, 80210
Phone (303) 996-7555
Fax (303) 996-7556
Enumeration date Jun 24, 2006
Last updated in NPPES Jun 7, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 2021048634 (MO) Secondary
207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 39816 (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
01735284 Medicaid CO -
73584070 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.

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Frequently asked questions

Where does Sean Markey practice?
The practice location on file with NPPES is in Denver, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sean Markey?
The National Provider Identifier (NPI) for Sean Markey is 1235165705, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-07.