Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Glenn Roy Allison, M.D.

Surgical Oncology Physician in Orange, CA · enumerated 2007 · practices at Reconstructive Services Medical Group, Inc.

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

National Provider Identifier

1245386051

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Glenn Roy Allison

Credential M.D.

Sex Male

Practice address 212 E Chapman Ave, Orange, CA, 92866

Phone (714) 633-9761

Fax (714) 633-0802

Enumeration date Jan 26, 2007

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License G25063 (CA) Secondary

2086S0122X Plastic and Reconstructive Surgery Physician Allopathic & Osteopathic Physicians · License G25063 (CA) Secondary

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License G25063 (CA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Glenn Allison practice?

The practice location on file with NPPES is in Orange, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Glenn Allison?

The National Provider Identifier (NPI) for Glenn Allison is 1245386051, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Reconstructive Services Medical Group, Inc Surgical Oncology Physician · Orange, CA NPI 1992851893

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.