NPI Portal NPI Lookup & Verification

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

Rocklan David Walker, D.O.

Family Medicine Physician in Wayne, PA · enumerated 2006 · practices at William A Cleveland Dmd & Associates.

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

National Provider Identifier

1629009881

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Rocklan David Walker
Credential D.O.
Sex Male
Practice address Wayne, PA, 19087
Phone (610) 688-8807
Fax (610) 688-2970
Enumeration date Jul 6, 2006
Last updated in NPPES Dec 7, 2017

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OS010474L (PA) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OSO10474L (PA) 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.

Read the full guide → Validate an NPI →

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 Rocklan Walker?
Rocklan Walker is registered in NPPES with the primary taxonomy of Family Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-12-07.