Dr. Glenn Roy Allison, M.D.

Dr. Glenn Roy Allison is a Surgical Oncology Physician provider (Surgery) practicing in Orange, CA, registered in the NPPES registry with NPI 1245386051 since 2007. The credential MD stands for Doctor of Medicine. Practices at Reconstructive Services Medical Group, Inc (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1245386051
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	7146339761
Fax	7146330802
Enumeration date	2007-01-26
Last updated in NPPES	2025-09-11

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
207Y00000X	Otolaryngology Physician	Secondary	G25063	CA
2086S0122X	Plastic and Reconstructive Surgery Physician	Secondary	G25063	CA
2086X0206X	Surgical Oncology Physician	Primary	G25063	CA

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

Copy-ready billing details

Provider: Glenn Allison, M.D.
NPI: 1245386051
Taxonomy: 2086X0206X (Surgical Oncology Physician)
Address: 212 E CHAPMAN AVE, Orange, CA, 92866

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1992851893	Reconstructive Services Medical Group, Inc	Organization	Surgical Oncology Physician	Orange, CA

Verify this record

Cross-check NPI 1245386051 against the authoritative CMS record: view Dr. Glenn Roy Allison on the official NPPES registry .

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 or validate an NPI number.

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.

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