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

Dr. Gregory Lynn Keller, DO

Individual provider Psychiatry Physician · NPI 1649385287

Dr. Gregory Lynn Keller, DO is a Psychiatry in Clarinda, Iowa. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 2004, 22 years ago. Practices with Cass County Memorial Hospital, a 67-clinician group and accepts Medicare assignment. Licensed in Iowa and Nebraska.

Years since qualifying
22
Trained at
University of Kansas School of Med (KC/WICH/SAL)
Licensed in
IA, NE
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

220 Essie Davison Dr
Clarinda, IA 51632-2915
Phone: (712) 542-8354
Show map & directions

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

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 3716 (IA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 3114 (NE)

Record details

NPI number1649385287
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorYes
NPI enumeratedAugust 21, 2006
Last updated in NPPESJanuary 26, 2026
Certification dateJanuary 26, 2026
Mailing address220 Essie Davison Dr, Clarinda, IA 51632-2915

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 2004 (22 years in practice)
Group practice Cass County Memorial Hospital — 67 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare