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

Dr. Karl Michael Grimmer Jr., MD

Individual provider Anesthesiology Physician · NPI 1386842003

Dr. Karl Michael Grimmer Jr., MD is an Anesthesiology in Washington, District of Columbia. Graduated from Indiana University School of Medicine in 2007, 19 years ago. Practices with Anesthesia Company LLC, a 377-clinician group and accepts Medicare assignment. Licensed in District of Columbia, Indiana, Maryland and Virginia.

Years since qualifying
19
Trained at
Indiana University School of Medicine
Licensed in
DC, IN, MD, VA
In the registry since
2007
Specialties on file
4
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

50 Florida Ave NE Apt 511
Washington, DC 20002-6968
Phone: (219) 902-3878
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD041865 (DC)
Anesthesiology Physician Taxonomy 207L00000X · Licence D72351 (MD)
Anesthesiology Physician Taxonomy 207L00000X · Licence 101254955 (VA)
Anesthesiology Physician Taxonomy 207L00000X · Licence 01069743A (IN)

Record details

NPI number1386842003
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 3, 2007
Last updated in NPPESJanuary 18, 2025
Certification dateJanuary 18, 2025

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Anesthesia Company Llc — 377 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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