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

Dr. Randy James Grellner, DO

Individual provider Family Medicine Physician · NPI 1356364376

Dr. Randy James Grellner, DO is a Family Practice in Cushing, Oklahoma. Graduated from Oklahoma State University College of Osteopathic Medicine in 1998, 28 years ago. Practices with Stillwater Medical Center Authority, a 168-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oklahoma.

Years since qualifying
28
Trained at
Oklahoma State University College of Osteopathic Medicine
Licensed in
OK
In the registry since
2006
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 →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1025 E 2nd St
Cushing, OK 74023-4136
Phone: (918) 225-3627
Fax: (918) 225-1008
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 3663 (OK)

Record details

NPI number1356364376
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 25, 2006
Last updated in NPPESMay 1, 2014
Mailing address1025 E 2nd St, Cushing, OK 74023-4136

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOKLAHOMA STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1998 (28 years in practice)
Group practice Stillwater Medical Center Authority — 168 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Cushing