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

Dr. Michael Douglas Casimir, MD

Individual provider Anesthesiology Physician · NPI 1669811238

Dr. Michael Douglas Casimir, MD is an Anesthesiology in Billings, Montana. Qualified in 2013, 13 years ago. Practices with Ias Illinois PC, a 81-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Florida, Massachusetts, Montana and New York.

Years since qualifying
13
Licensed in
FL, MA, MT, NY
In the registry since
2013
Specialties on file
5
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

2900 12th Ave N Ste 205W
Billings, MT 59101-7520
Phone: (631) 379-2104
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4400 Bayou Blvd Ste 16c, Pensacola, FL 32503-1907 — (850) 477-7042

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 80614 (MT)
Anesthesiology Physician Taxonomy 207L00000X · Licence ME161939 (FL)
Anesthesiology Physician Taxonomy 207L00000X · Licence 295005 (NY)
Anesthesiology Physician Taxonomy 207L00000X · Licence 270678 (MA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1669811238
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 17, 2013
Last updated in NPPESMay 6, 2024
Certification dateMay 6, 2024
Mailing address248 Route 25a Ste 37, Setauket, NY 11733-2954

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Ias Illinois Pc — 81 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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