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Stephen Edward Greefkens, D.O.

Developmental - Behavioral Pediatrics Physician in Fort Sam Houston, TX · enumerated 2006.

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

National Provider Identifier

1649246356

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Registry record

Entity type Individual (Type 1)
Name Stephen Edward Greefkens
Credential D.O.
Sex Male
Practice address 3851 Roger Brooke Dr, Mche-Dp, Fort Sam Houston, TX, 78234
Phone (210) 916-0765
Fax (210) 916-1254
Enumeration date Feb 23, 2006
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2080P0006X Developmental - Behavioral Pediatrics Physician Allopathic & Osteopathic Physicians · License 20A5077 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

What specialty is Stephen Greefkens?
Stephen Greefkens is registered in NPPES with the primary taxonomy of Developmental - Behavioral Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.