DR. LEONARD L GUNDERSON (M.D.) – Radiation Oncology Physician, NPI 1265416366

Radiation Oncology Physician

DR. LEONARD L GUNDERSON (M.D.) is a healthcare provider. based in Phoenix, Arizona. specializing in Radiation Oncology Physician. They hold the professional credentials M.D.. They hold a License No. 17918 (AZ). The NPI Number for DR. LEONARD L GUNDERSON (M.D.) is 1265416366

Main info

Male

Name

DR. LEONARD L GUNDERSON (M.D.)

NPI

1265416366

Phone

(480) 301-8000

Address

5779 E MAYO BLVD

Enumeration Date

1 December 2005

Last Update Date

29 October 2007

Data current as of

19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology

Experience54

Completeness75

Years active:20State licenses:1Digital endpointsOther names

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Provider Addresses for DR. LEONARD L GUNDERSON (M.D.)

5779, East Mayo Boulevard, Phoenix, Maricopa County, Arizona, 85054, United States
PHOENIX, AZ 850544502
Phone: (480) 301-8000
Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

This can happen when there are no reportable CMS Open Payments records.

Medicare Enrollment & Revalidation

Source: CMS public data · Not endorsed by CMS ·

Educational use only—not medical, billing, or legal advice.

No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 85054)

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Reviews

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Frequently asked questions

How is DR. LEONARD L GUNDERSON (M.D.) identified in CMS data?

CMS-hosted NPPES data lists DR. LEONARD L GUNDERSON (M.D.) with NPI 1265416366.

Can I rely on DR. LEONARD L GUNDERSON (M.D.) being an active provider?

As of the registry snapshot, DR. LEONARD L GUNDERSON (M.D.) is marked active.

What taxonomy line describes DR. LEONARD L GUNDERSON (M.D.)?

For research purposes, treat DR. LEONARD L GUNDERSON (M.D.) as Radiation Oncology Physician in this dataset. Clinical services aligned with this taxonomy classification.

Where should I expect DR. LEONARD L GUNDERSON (M.D.) on a map?

Expect Phoenix, Arizona as a primary anchor for DR. LEONARD L GUNDERSON (M.D.) unless the record lists multiple sites.

How many locations tie to this NPI?

2 practice locations appear in the available data.