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

Individual provider Family Medicine Physician · NPI 1639105968

Lyle J Onstad, MD is a Family Practice in Great Falls, Montana. Graduated from Creighton University School of Medicine in 1998, 28 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
28
Trained at
Creighton University School of Medicine
Licensed in
MT
In the registry since
2006
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

401 15th Ave S Ste 201
Great Falls, MT 59405-4396
Phone: (406) 727-2121
Fax: (406) 727-2147
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence MT9538 (MT)

Record details

NPI number1639105968
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 26, 2006
Last updated in NPPESMay 22, 2012
Mailing address401 15th Avenue South, Suite 201, Great Falls, MT 59405-4396

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolCREIGHTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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