NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christopher Medellin, MD, MPH

Preventive Medicine/Occupational Environmental Medicine Physician in Fort Sam Houston, TX · enumerated 2006.

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

National Provider Identifier

1861503336

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Christopher Medellin
Credential MD, MPH
Sex Male
Practice address 3551 Roger Brooke Dr, Fort Sam Houston, TX, 78234
Phone (210) 916-3707
Enumeration date Aug 31, 2006
Last updated in NPPES Mar 15, 2017

Taxonomy & licenses

2083P0500X Preventive Medicine/Occupational Environmental Medicine Physician Allopathic & Osteopathic Physicians · License K6775 (TX) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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

What is the NPI number for Christopher Medellin?
The National Provider Identifier (NPI) for Christopher Medellin is 1861503336, a Type 1 (individual) record in the CMS NPPES registry.
Where does Christopher Medellin practice?
The practice location on file with NPPES is in Fort Sam Houston, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-15.