Reynold Michael Karr, M.D.
Rheumatology Physician · Seattle, WA
Reynold Michael Karr, M.D. is a rheumatology physician with a practice address in Seattle, Washington, and NPI 1437259835, issued on Sep 25, 2006. Check the license (Washington MD00017390, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Reynold Michael Karr
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- MD00017390 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4245 Roosevelt Way NE, Seattle, WA 98105
- Phone
- (206) 543-6420
- Enumerated
- Sep 25, 2006
- Record last updated
- Jan 27, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 1437259835 WA
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 200 in Washington → Look up another NPI →
Also registered at 4245 Roosevelt Way NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Valerie Bobb, PHYSICAL THERAPISTPhysical Therapist1477616639
Verify Reynold Michael Karr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00017390Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average rheumatology physician in 2024
134 Medicare Part D claims for 23 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Amitriptyline Hcl17 claims
- Dupixent Pen12 claims
- Enbrel Sureclick12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 93.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Reynold Michael Karr among 200 rheumatology physician records in Washington
Reynold Michael Karr, M.D. is one of 200 rheumatology physician records with a practice address in Washington. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 52% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2014 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Washington
There are 200 rheumatology physician records in Washington.
All 200 in Washington → Every provider in Seattle → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Carin DugowsonSeattle, WA 981051427134279
- Kwanghoon Han, MDSeattle, WA 981051740201615
- Hsin-Hsuan Juo, M.D.Seattle, WA 981051134495617
- Christi Kenyon, MDSeattle, WA 981051508852633
- Rayan Najjar, MD, MPHSeattle, WA 981051750817672
- Erika Noss, M.D., PH.D.Seattle, WA 981051730271636
- Namrata Singh, M.D.Seattle, WA 981051306131495
- Anubhav Singh, M.DSeattle, WA 981051477249407
Common questions
What is Reynold Michael Karr, M.D.'s NPI number?
Reynold Michael Karr, M.D.'s National Provider Identifier (NPI) is 1437259835, issued on Sep 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Reynold Michael Karr, M.D. located?
The NPPES record lists a practice address at 4245 Roosevelt Way NE, Seattle, WA, 98105. Phone: (206) 543-6420. Providers update this record themselves, so call before visiting.
How can I verify Reynold Michael Karr, M.D.'s license?
NPPES lists Washington license number MD00017390, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Reynold Michael Karr, M.D. prescribe under Medicare Part D?
In 2024, Reynold Michael Karr, M.D. had 134 Medicare Part D claims for 23 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Reynold Michael Karr, M.D.'s MIPS final score?
The 2023 MIPS final score is 93.1 of 100. 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.