Mark F. Leonard, MD
Emergency Medicine Physician · Arlington, WA
Mark F. Leonard, MD is an emergency medicine physician with a practice address in Arlington, Washington, and NPI 1720023559, issued on Jun 17, 2006. Check the license (Washington MD00027106, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Mark F. Leonard
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD00027106 WA
Self-reported in NPPES; status is on the state search - Practice location
- 330 S Stillaguamish Ave, Arlington, WA 98223
- Phone
- (360) 435-2133
- Enumerated
- Jun 17, 2006
- Record last updated
- Apr 11, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (360) 435-0513
- Medicaid ID
- 1056779 WA
- Medicare enrollment
- Enrolled (PECOS I20070829000786); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 1987
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,459 in Washington → Look up another NPI →
Also registered at 330 S Stillaguamish Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diana Barber, RNFARegistered Nurse First Assistant1255509683
- Wesley Branstiter, CRNARegistered Nurse1609821586
- Leanne Brink, PAMedical Physician Assistant1043304363
- Laura Castleberry, CRNACertified Registered Nurse Anesthetist1316992290
- Robert Cockrell, PHARMDPharmacist1285829911
- William Coyne, M.D.Internal Medicine Physician1942242508
Verify Mark F. Leonard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00027106Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
57% fewer Medicare Part D claims than the average emergency medicine physician in 2024
98 Medicare Part D claims for 66 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 11 claims were for opioids.
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 practice group's MIPS final score for 2023 (Medicare payment program): 76.8 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
- Okanogan Douglas County Hospital Dist 1Brewster, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark F. Leonard among 1,459 emergency medicine physician records in Washington
Mark F. Leonard, MD is one of 1,459 emergency medicine physician records with a practice address in Washington. 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 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 55% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1987 · median 2010 among the 851 with a school on file
- Record last updated2008 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Washington
There are 1,459 emergency medicine physician records in Washington.
All 1,459 in Washington → Every provider in Arlington → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Everett Deleon, M.D.Arlington, WA 982231194712828
- Peter Hutchinson, DOArlington, WA 982231356398671
- Nancy Marston-Quivey, MDArlington, WA 982231285681668
- Robert Apter, MDAnacortes, WA 982211033165162
- Richard Baluyot, DOAnacortes, WA 982211831772094
- Ruth Berner, MDBellingham, WA 982251093752347
- Bradley Bigelow, MDBellingham, WA 982251699717546
- Allan Buehler, MDBellingham, WA 982251386687788
Common questions
What is Mark F. Leonard, MD's NPI number?
Mark F. Leonard, MD's National Provider Identifier (NPI) is 1720023559, issued on Jun 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark F. Leonard, MD located?
The NPPES record lists a practice address at 330 S Stillaguamish Ave, Arlington, WA, 98223. Phone: (360) 435-2133. Providers update this record themselves, so call before visiting.
How can I verify Mark F. Leonard, MD's license?
NPPES lists Washington license number MD00027106, 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 Mark F. Leonard, MD prescribe under Medicare Part D?
In 2024, Mark F. Leonard, MD had 98 Medicare Part D claims for 66 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Mark F. Leonard, MD's MIPS final score?
The 2023 MIPS final score is 76.8 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.