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

Mary Caroline Deigert, PAC

Individual provider Physician Assistant · NPI 1306890041

Mary Caroline Deigert, PAC is a Physician Assistant in Billings, Montana. Qualified in 2005, 21 years ago. Practices with Billings Clinic, a 805-clinician group and accepts Medicare assignment. Licensed in Montana.

Years since qualifying
21
Licensed in
MT
In the registry since
2006
What do these letters mean?
PAC — Physician Assistant, Certified
A physician assistant holding current national certification; usually written PA-C.

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Practice location Address checks out

123 S 27th St
Billings, MT 59101-4227
Phone: (406) 247-3350
Fax: (406) 247-3389
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence 450 (MT)

Record details

NPI number1306890041
Entity typeIndividual (Type 1)
GenderFemale
Credentials PAC
Sole proprietorNo
NPI enumeratedMay 19, 2006
Last updated in NPPESOctober 12, 2023
Certification dateOctober 12, 2023
Mailing address123 S 27th St, Billings, MT 59101-4227

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Billings Clinic — 805 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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