Mark La Shell, M.D.
Allergy Physician · Bellevue, WA
Mark La Shell, M.D. is an allergy physician with a practice address in Bellevue, Washington, and NPI 1205825288, issued on Oct 21, 2005. Check the license (Washington MD 60194720, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Mark La Shell
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License numbers
- MD 60194720 WA
MD070164L PA
Self-reported in NPPES; status is on the state search - Practice location
- 11511 NE 10TH St, Bellevue, WA 98004
- Phone
- (425) 502-3000
- Enumerated
- Oct 21, 2005
- Record last updated
- Apr 26, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20240925000387); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1997
- Entity
- Type 1 · individual
Also registered at 11511 NE 10TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa AdamsPhysical Therapist1831295591
- Ali Alhusseini, MDInternal Medicine Physician1770840738
- Adrienne Anderson, LICSWClinical Social Worker1770142143
- Kate Andrews, P.A.Physician Assistant1295280782
- Aaron Apodaca, M.D.Hospitalist Physician1427115815
- Esther Argenyi, M.D.Diagnostic Radiology Physician1750425369
Verify Mark La Shell in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD 60194720Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% fewer Medicare Part D claims than the average allergy physician in 2024
215 Medicare Part D claims for 57 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Azelastine Hcl63 claims
- Breyna48 claims
- Ipratropium Bromide36 claims
- Wixela Inhub18 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.
Bills Medicare through one group practice
- Jefferson City Medical Group PCJefferson City, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allergy Physician providers in Washington
There are 18 allergy physician records in Washington.
Other allergy physician records in Washington
- Garrison Ayars, MDBellevue, WA1376567883
- Jeannie Bay, DOTacoma, WA1174819767
- Linda Brown, M.D.Tacoma, WA1508830126
- David Buscher, M.D.Redmond, WA1982755104
- Pandora Christie, MDSeattle, WA1851385132
- Bradley Cromar, MDWenatchee, WA1710916184
- Laura Davis, MDVancouver, WA1083607014
- Britton Georges, M.D.Bellevue, WA1326137324
- Charles Jackson, MDBellevue, WA1851305866
- Gregory Martonick, M.D.Walla Walla, WA1689758195
Common questions
What is Mark La Shell, M.D.'s NPI number?
Mark La Shell, M.D.'s National Provider Identifier (NPI) is 1205825288, issued on Oct 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark La Shell, M.D. located?
The NPPES record lists a practice address at 11511 NE 10TH St, Bellevue, WA, 98004. Phone: (425) 502-3000. Providers update this record themselves, so call before visiting.
How can I verify Mark La Shell, M.D.'s license?
NPPES lists Washington license number MD 60194720, 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 La Shell, M.D. prescribe under Medicare Part D?
In 2024, Mark La Shell, M.D. had 215 Medicare Part D claims for 57 beneficiaries; the average among allergy physician prescribers was 750. Part D covers Medicare prescriptions only.
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.