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

Gregory M Sibenaller, DO

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1184367724

Gregory M Sibenaller, DO is a Family Practice in Mason City, Iowa. Graduated from West Virginia School of Osteopathic Medicine in 2022, 4 years ago. Practices with St Anthony Regional Hospital and Nursing Home, a 48-clinician group and accepts Medicare assignment.

Years since qualifying
4
Trained at
West Virginia School of Osteopathic Medicine
In the registry since
2022
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

1010 4th St SW Ste 305
Mason City, IA 50401-2801
Phone: (641) 428-5700
Fax: (641) 428-2515
Show map & directions

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

Specialties & licences

Student in an Organized Health Care Education/Training Program (primary) Taxonomy 390200000X

Record details

NPI number1184367724
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 20, 2022
Last updated in NPPESJuly 14, 2025
Certification dateJuly 14, 2025
Mailing address600 1st St Nw Ste 101, Mason City, IA 50401-2932

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolWEST VIRGINIA SCHOOL OF OSTEOPATHIC MEDICINE
Graduated 2022 (4 years in practice)
Group practice St Anthony Regional Hospital And Nursing Home — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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