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

Dr. Loyal Richard Stierlen, DO

Individual provider Surgery Physician · NPI 1447275052

Dr. Loyal Richard Stierlen, DO is a General Surgery in Oklahoma City, Oklahoma. Qualified in 2001, 25 years ago. Practices with Integris Ambulatory Care Corporation, a 683-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
25
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.

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Practice location Address checks out

4221 S Western Ave Ste 5050
Oklahoma City, OK 73109
Phone: (405) 636-7900
Fax: (405) 644-5168
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 4438 (OK)

Record details

NPI number1447275052
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 13, 2006
Last updated in NPPESJuly 3, 2018

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Integris Ambulatory Care Corporation — 683 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations10 on file with Medicare

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