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

Dr. Robert J Naef, DO

Individual provider Emergency Medicine Physician · NPI 1265441604

Dr. Robert J Naef, DO is an Emergency Medicine Physician in Anaconda, Montana. Licensed in Montana. Registered with an NPI since 2006.

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

401 W Pennsylvania Ave
Anaconda, MT 59711-1931
Phone: (406) 563-8500
Fax: (406) 563-8694
Show map & directions

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

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 11107 (MT)

Record details

NPI number1265441604
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 5, 2006
Last updated in NPPESFebruary 20, 2019
Mailing address401 W Pennsylvania Ave, Anaconda, MT 59711-1931

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