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

Dr. Grzegorz Cieslewicz, MD

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1780634055

Dr. Grzegorz Cieslewicz, MD is a Critical Care (Intensivists) in Anaconda, Montana. Qualified in 1988, 38 years ago. Practices with Arizona Acute Medical Services 1 PC, a 48-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
38
Licensed in
AZ
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

401 W Pennsylvania Ave
Anaconda, MT 59711-1999
Phone: (406) 563-8500
Fax: (406) 563-8694
Show map & directions

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

Additional practice locations (2)

  • 9060 E Via Linda Ste 250, Scottsdale, AZ 85258-5425 — (480) 614-2000
  • 350 Heritage Way Ste 2100, Kalispell, MT 59901-3167 — (406) 257-8992

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 32473 (AZ)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 32473 (AZ)

Record details

NPI number1780634055
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 10, 2006
Last updated in NPPESJuly 29, 2024
Certification dateJuly 29, 2024

Medicare enrollment

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

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Also practisesPULMONARY DISEASE
Medical schoolOTHER
Graduated 1988 (38 years in practice)
Group practice Arizona Acute Medical Services 1 Pc — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare