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

Aaron Patrick Fieker, DO

Individual provider Gastroenterology Physician · NPI 1326268079

Aaron Patrick Fieker, DO is a Gastroenterology in Tulsa, Oklahoma. Graduated from Oklahoma State University College of Osteopathic Medicine in 2005, 21 years ago. Practices with Gastroenterology Specialists, Inc, a 22-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oklahoma.

Years since qualifying
21
Trained at
Oklahoma State University College of Osteopathic Medicine
Licensed in
OK
In the registry since
2007
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

10210 E 91st St
Tulsa, OK 74133-5834
Phone: (918) 940-8500
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 4758 (OK)

Record details

NPI number1326268079
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 26, 2007
Last updated in NPPESMay 22, 2025
Certification dateMay 22, 2025
Mailing address6600 S Yale Ave Ste 1200, Tulsa, OK 74136-3361

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolOKLAHOMA STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2005 (21 years in practice)
Group practice Gastroenterology Specialists, Inc. — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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