Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Randy James Grellner, DO

Individual provider Family Medicine Physician · NPI 1356364376

Dr. Randy James Grellner, DO is registered under 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 →

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Practice location Address checks out

1025 E 2nd St
Cushing, OK 74023-4136 Not confirmed with CMS for 12 years — call before visiting
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

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

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times
Removal of tissue 1–10 times
Removal or shaving of skin growth 1–10 times
Skin biopsy 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients600
Services billed 39,774 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,031 62 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • O U Medical Center Hospital · Oklahoma City, OK · listed as Ou Medical Center
  • Genesis Home Health Llc Home health agency · Yale, OK
  • Walker Companion Services, Llc Home health agency · Cushing, OK
  • Hillcrest Hospital Cushing Hospital · Cushing, OK
  • Stillwater Medical Center Hospital · Stillwater, OK
  • Amedisys Home Health Home health agency · Oklahoma City, OK
  • Complete Home Health Of Western Oklahoma Home health agency · Enid, OK

Colleagues at Stillwater Medical Center Authority

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 168 clinicians in the practice; 12 are shown here.

Other providers in Cushing