Registry data as of Aug 27, 2026

Mark Summerson, PH.D.

Psychologist · Pullman, WA

Mark Summerson, PH.D. is a psychologist with a practice address in Pullman, Washington, and NPI 1932122934, issued on Jul 25, 2006. Check the license with the Washington board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, loaded Aug 27, 2026 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1932122934
Name
Mark Summerson
Credential
PH.D.
Primary taxonomy
Psychologist 103T00000X
Practice location
254 E Main St, Pullman, WA 99163
Phone
(509) 330-5456
Enumerated
Jul 25, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Mark Summerson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Washington board licenses this professionCheck the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Find the Washington license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

9 psychologist records list a Pullman practice address

They are 9 of the 597 NPPES records with a Pullman practice address, and 1,031 psychologist records in Washington. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other psychologist records in Washington

  1. Leslie Aaron, PH.D.Bellingham, WA1639108095
  2. Benjamin AaronsonSeattle, WA1497108880
  3. Maleeha AbbasSeattle, WA1326406836
  4. Janet Abrams, PSYDSeattle, WA1255480711
  5. Philip Abrego, PH.D.Seattle, WA1760403976
  6. Karen Acheson, PHDPuyallup, WA1841346921
  7. Brian Adams, PHDVancouver, WA1275638181
  8. Kristopher AdamsVancouver, WA1679197370
  9. Lisa Adriance, PHDEverett, WA1235186917
  10. Angela Agelopoulos, PSY.D.Shoreline, WA1629376892

Common questions

What is Mark Summerson, PH.D.'s NPI number?

Mark Summerson, PH.D.'s National Provider Identifier (NPI) is 1932122934, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Summerson, PH.D. located?

The NPPES record lists a practice address at 254 E Main St, Pullman, WA, 99163. Phone: (509) 330-5456. Providers update this record themselves, so call before visiting.

How can I verify Mark Summerson, PH.D.'s license?

Search the Washington board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.