Karl Michael Grimmer, MD
Anesthesiology Physician · Washington, DC
Karl Michael Grimmer, MD is an anesthesiology physician with a practice address in Washington, District of Columbia, and NPI 1386842003, issued on Jul 3, 2007. Check the license (District of Columbia MD041865, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Karl Michael Grimmer
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- MD041865 DC
01069743A IN
D72351 MD
101254955 VA
Self-reported in NPPES; status is on the state search - Practice location
- 50 Florida Ave NE Apt 511, Washington, DC 20002
- Phone
- (219) 902-3878
- Enumerated
- Jul 3, 2007
- Record last updated
- Jan 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20260325000834); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 317 in District of Columbia → Look up another NPI →
Verify Karl Michael Grimmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD041865Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 66 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Anesthesia Company LLCSeaford, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karl Michael Grimmer among 317 anesthesiology physician records in District of Columbia
Karl Michael Grimmer, MD is one of 317 anesthesiology physician records with a practice address in District of Columbia. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 45% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2007 · median 2006 among the 222 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in District of Columbia
There are 317 anesthesiology physician records in District of Columbia.
All 317 in District of Columbia → Every provider in Washington → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Sean Alexander, M.D.Washington, DC 200021952538217
- Rupa Sekhar, M.D.Washington, DC 200021649598566
- Michelle Burnett, MDWashington, DC 200071376542381
- Kerry DegrootWashington, DC 200071518965573
- Medhat HannallahWashington, DC 200071366440174
- Bideshwar KatariaWashington, DC 200071255330536
- Chin KimWashington, DC 200071619976875
- Young Duk KimWashington, DC 200071124027271
Common questions
What is Karl Michael Grimmer, MD's NPI number?
Karl Michael Grimmer, MD's National Provider Identifier (NPI) is 1386842003, issued on Jul 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Karl Michael Grimmer, MD located?
The NPPES record lists a practice address at 50 Florida Ave NE Apt 511, Washington, DC, 20002. Phone: (219) 902-3878. Providers update this record themselves, so call before visiting.
How can I verify Karl Michael Grimmer, MD's license?
NPPES lists District of Columbia license number MD041865, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Karl Michael Grimmer, MD's MIPS final score?
The 2023 MIPS final score is 66 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.