Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Gary Arlyn Finstad, MD

Individual provider Internal Medicine Physician · NPI 1184763633

Gary Arlyn Finstad, MD is an Internal Medicine in Lake Isabella, California. Graduated from Loma Linda University School of Medicine in 1979, 47 years ago. Practices with Sienna Medical Corporation, a 4-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
47
Trained at
Loma Linda University School of Medicine
Licensed in
CA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

6425 Lynch Canyon Dr
Lake Isabella, CA 93240-9726
Phone: (760) 379-8630
Fax: (760) 379-7658
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G43717 (CA)

Record details

NPI number1184763633
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 5, 2007
Last updated in NPPESFebruary 12, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolLOMA LINDA UNIVERSITY SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Group practice Sienna Medical Corporation — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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