DR. GLENN ROY ALLISON M.D.
NPI 1245386051
Surgery - Surgical Oncology in Orange, CA

Q: What is Glenn Allison's NPI number?

The NPI number for Glenn Allison is 1245386051. It was assigned to this individual provider in the NPPES registry on January 26, 2007.

Q: What is Glenn Allison's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.

Q: When was this NPI record last updated?

The NPPES record for Glenn Allison was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since January 26, 2007

212 E CHAPMAN AVE, ORANGE, CA 92866(714) 633-9761(714) 633-0802 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About Dr. Glenn Roy Allison M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. GLENN ROY ALLISON M.D. (NPI 1245386051) is an individual surgical oncology provider in Orange, California, licensed in California (G25063) and active in the NPI registry since January 2007.

NPPES Registry Identity

NPI1245386051

Entity TypeIndividualMale

Primary Taxonomy2086X0206X

Provider Legal NameDR. GLENN ROY ALLISONCredential: M.D.

Location Address212 E CHAPMAN AVEOrange, CA 92866-1506

Mailing AddressPo Box 3057Tustin, CA 92781-3057

Phone(714) 633-9761

Fax(714) 633-0802

Sole ProprietorNo

Enumeration DateJanuary 26, 2007

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1245386051 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySurgery · Surgical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code2086X0206X

License✔ Licensed in CA · G25063

Definition

A surgical oncologist is a well-qualified surgeon who has obtained additional training and experience in the multidisciplinary approach to the prevention, diagnosis, treatment, and rehabilitation of cancer patients, and devotes a major portion of his or her professional practice to these activities and cancer research.

Also ListedOtolaryngologyTaxonomy 207Y00000X · License G25063 (CA)

Also ListedSurgery · Plastic and Reconstructive SurgeryTaxonomy 2086S0122X · License G25063 (CA)

212 E CHAPMAN AVE, Orange, CA 92866

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Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RECONSTRUCTIVE SERVICES MEDICAL GROUP, INC

Surgery (Surgical Oncology)

212 E CHAPMAN AVE
ORANGE, CA 92866

Orange County (714) 633-9761

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Glenn Allison's NPI number?

The NPI number for Glenn Allison is 1245386051. It was assigned to this individual provider in the NPPES registry on January 26, 2007.

Where is Glenn Allison located?

Glenn Allison practices at 212 E Chapman Ave, Orange, CA 92866. The listed phone number is (714) 633-9761.

What is Glenn Allison's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Oncology, with taxonomy code 2086X0206X.

When was this NPI record last updated?

The NPPES record for Glenn Allison was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.