Mark E. Didier, MD
Family Medicine Physician · Spokane, WA
Mark E. Didier, MD is a family medicine physician with a practice address in Spokane, Washington, and NPI 1255333647, issued on Aug 15, 2005. Check the license (Washington MD00029924, as entered in NPPES) on the Washington Medical Commission; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark E. Didier
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD00029924 WA
Self-reported in NPPES; status is on the state search - Practice location
- 605 E Holland Ave, Spokane, WA 99218
- Phone
- (509) 838-2531
- Enumerated
- Aug 15, 2005
- Record last updated
- Dec 12, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 8270985 WA
- Entity
- Type 1 · individual
Also registered at 605 E Holland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catharine Asay, MA, MS, LMHC, NCCMental Health Counselor1649679218
- Allison Bennett, LCSW-CClinical Social Worker1689943557
- Chris Chaffin, DDSDentist1013912864
- Kawal Chester, M.D.Medical Oncology Physician1619963600
- Jason Deville, D.O.Nephrology Physician1255440459
- Susanne Ferro, PTPhysical Therapist1275626483
Verify Mark E. Didier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00029924Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
283 family medicine physician records list a practice address in Spokane
They are 283 of the 14,049 NPPES records with a practice address in Spokane, and 5,534 family medicine physician records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 283 in Spokane → All 5,534 in Washington → Every provider in Spokane →
Other family medicine physician records in Washington
- Shawn Aaron, MDLongview, WA1578560710
- John Abano, M.D.Shoreline, WA1891929857
- Sarah Abbot, DOKirkland, WA1033555180
- Arthur Abbott, M.D.Seattle, WA1255488847
- Dale Abbott, MDBurlington, WA1760453534
- Michael Abbott, MDEast Wenatchee, WA1336179928
- Richard Abbott, M.D.Mount Vernon, WA1689835803
- Charlee Abboud, DOTacoma, WA1174152169
- Suad AbdelazizSeattle, WA1306423421
- Joonis Abdulkhader, M.D.Seattle, WA1518154335
Common questions
What is Mark E. Didier, MD's NPI number?
Mark E. Didier, MD's National Provider Identifier (NPI) is 1255333647, issued on Aug 15, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark E. Didier, MD located?
The NPPES record lists a practice address at 605 E Holland Ave, Spokane, WA, 99218. Phone: (509) 838-2531. Providers update this record themselves, so call before visiting.
How can I verify Mark E. Didier, MD's license?
NPPES lists Washington license number MD00029924, 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.