Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Stephen R Walker, M.D.
Specialist in Media, PA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1457311912
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Registry record
Entity type Individual (Type 1)
Name Dr. Stephen R Walker
Credential M.D.
Sex Male
Practice address 200 State Street, Suite 205, Media, PA, 19063
Phone (610) 521-4112
Fax (610) 521-6864
Enumeration date Mar 27, 2006
Last updated in NPPES Jan 20, 2016
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Stephen Walker?
The National Provider Identifier (NPI) for Stephen Walker is 1457311912, a Type 1 (individual) record in the CMS NPPES registry.
Where does Stephen Walker practice?
The practice location on file with NPPES is in Media, PA. 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 2016-01-20.