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

Robert Charles Witcosky, P.A.

Surgical Physician Assistant in Campbell, CA · enumerated 2006.

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

National Provider Identifier

1366405383

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Robert Charles Witcosky

Credential P.A.

Sex Male

Practice address Campbell, CA, 95008

Phone (408) 286-1967

Fax (408) 286-1967

Enumeration date Apr 10, 2006

Last updated in NPPES Apr 29, 2013

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

Taxonomy & licenses

363AS0400X Surgical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA10096 (CA) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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 Robert Witcosky?

Robert Witcosky is registered in NPPES with the primary taxonomy of Surgical Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Patrick Monahan Specialist · Campbell, CA NPI 1891783148 Rodolfo Morales Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Campbell, CA NPI 1831135656 Jonathan Le Plastic Surgery Physician · Campbell, CA NPI 1932201258 William Hopkins Pain Medicine (Anesthesiology) Physician · Campbell, CA NPI 1750467908 David R Harris MD A Medical Corporation Procedural Dermatology Physician · Campbell, CA NPI 1053485599 David Harris Procedural Dermatology Physician · Campbell, CA NPI 1174697619 Tristen Haug Physician Assistant · Campbell, CA NPI 1043364441 Ronald Gemberling Plastic and Reconstructive Surgery Physician · Campbell, CA NPI 1366572471

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-29.