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

Dr. Gregg Wendell Schellack, DO

Individual provider Orthopaedic Surgery Physician · NPI 1205887544

Dr. Gregg Wendell Schellack, DO is an Orthopedic Surgery in Livingston, Montana. Qualified in 2003, 23 years ago. Practices with Plains Hospital Corporation, a 29-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
23
Licensed in
MT
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 →

Practice location Address checks out

320 Alpenglow Ln
Livingston, MT 59047-8506
Phone: (406) 222-3541
Fax: (406) 222-7606
Show map & directions

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

Additional practice locations (1)

  • 600 Mt Highway 91 S, Dillon, MT 59725-7379 — (406) 683-3000

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence PHYS-35111 (MT)

Record details

NPI number1205887544
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 12, 2006
Last updated in NPPESAugust 21, 2024
Certification dateAugust 21, 2024
Mailing address320 Alpenglow Ln, Livingston, MT 59047-8506

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Plains Hospital Corporation — 29 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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