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

Andrew Robert Fischer, MD

Individual provider Internal Medicine Physician · NPI 1962473553

Andrew Robert Fischer, MD is a Pulmonary Disease in Billings, Montana. Qualified in 1989, 37 years ago. Practices with Allen Intensivist Group LLC, an 18-clinician group and accepts Medicare assignment. Licensed in Illinois, Indiana and Montana.

Years since qualifying
37
Licensed in
IL, IN, MT
In the registry since
2006
Specialties on file
7
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

801 N 29th St
Billings, MT 59101-0905
Phone: (460) 238-5046
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence MED-PHYS-LIC-50794 (MT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 01064195A (IN)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 036091112 (IL)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 01064195A (IN)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 036091112 (IL)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 01064195A (IN)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X (MT)

Record details

NPI number1962473553
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 31, 2006
Last updated in NPPESSeptember 18, 2017
Mailing addressPo Box 35100, Billings, MT 59107-5100

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), INTERNAL MEDICINE
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Allen Intensivist Group Llc — 18 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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