Lilliam A. Sierra, M.D.
Developmental - Behavioral Pediatrics Physician · Kennewick, WA
Lilliam A. Sierra, M.D. is a developmental - behavioral pediatrics physician with a practice address in Kennewick, Washington, and NPI 1275533838, issued on Jul 26, 2005. Check the license (Washington MD00024390, as entered in NPPES) on the Washington Medical Commission; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Lilliam A. Sierra
- Credential
- M.D.
- Primary taxonomy
- Developmental - Behavioral Pediatrics Physician 2080P0006X
- License number
- MD00024390 WA
Self-reported in NPPES; status is on the state search - Practice location
- 7301 W Deschutes Ave, Kennewick, WA 99336
- Phone
- (509) 374-1962
- Enumerated
- Jul 26, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (509) 374-0572
- Medicaid ID
- 1089663 WA
- Entity
- Type 1 · individual
Also registered at 7301 W Deschutes Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jared Christensen, O.D.Optometrist1659579241
- Claude Depew, O.D.Optometrist1154371037
- Kenneth Howard, DDSDentist1437254760
Verify Lilliam A. Sierra in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00024390Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Developmental - Behavioral Pediatrics Physician providers in Washington
There are 37 developmental - behavioral pediatrics physician records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other developmental - behavioral pediatrics physician records in Washington
- Nicholas Alexander, MDSeattle, WA1669969713
- Angela Armen, MDSeattle, WA1568880276
- Erin Baumler, MDSeattle, WA1356970016
- Forrest BennettSeattle, WA1205917564
- Timothy Brei, MDSeattle, WA1710094131
- David Burkebile, MDRenton, WA1912065889
- Andrea Charlton, D.O.Joint Base Lewis McChord, WA1093109449
- Michelle Clark, D.O.Tacoma, WA1588804082
- Sterling Clarren, MDSeattle, WA1093931339
- Thomas Clingan, MDTacoma, WA1134182801
Common questions
What is Lilliam A. Sierra, M.D.'s NPI number?
Lilliam A. Sierra, M.D.'s National Provider Identifier (NPI) is 1275533838, issued on Jul 26, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Lilliam A. Sierra, M.D. located?
The NPPES record lists a practice address at 7301 W Deschutes Ave, Kennewick, WA, 99336. Phone: (509) 374-1962. Providers update this record themselves, so call before visiting.
How can I verify Lilliam A. Sierra, M.D.'s license?
NPPES lists Washington license number MD00024390, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.