Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert Lynn Sorenson, M.D.

Ophthalmology Physician in Berkeley, CA · enumerated 2006.

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

National Provider Identifier

1235220799

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Registry record

Entity type Individual (Type 1)

Name Robert Lynn Sorenson

Credential M.D.

Sex Male

Practice address 3010 Colby St, Ste 114, Berkeley, CA, 94705

Phone (510) 848-1413

Fax (510) 848-7347

Enumeration date Sep 27, 2006

Last updated in NPPES Apr 17, 2008

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G045092 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
GR0021950	Medicaid	CA	-
G045092	Other	CA	STATE LICENSE

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 NPI 1235220799 active?

Yes, as of the latest NPPES snapshot, NPI 1235220799 is active (record last updated 2008-04-17).

How do I verify Robert Sorenson's NPI record?

Cross-check NPI 1235220799 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Brian Hinrichsen Emergency Medicine Physician · Berkeley, CA NPI 1376534792 James Nickelsen Allergy & Immunology Physician · Berkeley, CA NPI 1891772000 Mark Reiley Orthopaedic Foot and Ankle Surgery Physician · Berkeley, CA NPI 1578595468 John Mattson Orthopaedic Surgery Physician · Berkeley, CA NPI 1073545950 Amirali Rahmatian General Practice Dentistry · Berkeley, CA NPI 1851305254 Nicola Hanchock Internal Medicine Physician · Berkeley, CA NPI 1518074830 Andrew Sorenson Ophthalmology Physician · Berkeley, CA NPI 1326139981 Robert Fowler Surgery Physician · Berkeley, CA NPI 1891879417

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-17.