Dr. Mark Warner, DO

Dr. Mark Warner is a Pediatrics Physician provider (Pediatrics) practicing in Drexel Hill, PA, registered in the NPPES registry with NPI 1477675635 since 2007. The credential DO stands for Doctor of Osteopathic Medicine.

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NPI	1477675635
Entity type	Individual (Type 1)
Name	Dr. Mark Warner
Credential	DO
Sex	Male
Practice address	5030 STATE ROAD, STE 2-900, Drexel Hill, PA, 19026
Phone	6106239080
Fax	6106233861
Enumeration date	2007-04-06
Last updated in NPPES	2008-06-26

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
208000000X	Pediatrics Physician	Primary	OS005359L	PA

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

Other identifiers

Identifier	Type	State	Issuer
0010979340002	Medicaid	PA	—

Copy-ready billing details

Provider: Mark Warner, DO
NPI: 1477675635
Taxonomy: 208000000X (Pediatrics Physician)
Address: 5030 STATE ROAD, STE 2-900, Drexel Hill, PA, 19026

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1013080878	Anita Ott	Individual	Family Medicine Physician	Drexel Hill, PA
1699987198	Elizabeth Rollnik	Individual	Pediatrics Physician	Drexel Hill, PA
1346452836	Despina Soppas	Individual	Pediatrics Physician	Drexel Hill, PA

Verify this record

Cross-check NPI 1477675635 against the authoritative CMS record: view Dr. Mark Warner on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.

What specialty is Mark Warner?

Mark Warner is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-06-26.