Mary Josephine Hendrickson, PHD
Psychologist · Issaquah, WA
Mary Josephine Hendrickson, PHD is a psychologist with a practice address in Issaquah, Washington, and NPI 1699755561, issued on Jan 18, 2006. Check the license (Washington PY00002719, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Josephine Hendrickson
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PY00002719 WA
Self-reported in NPPES; status is on the state search - Practice location
- 22500 SE 64TH PL Ste 230, Issaquah, WA 98027
- Phone
- (425) 409-6414
- Enumerated
- Jan 18, 2006
- Record last updated
- Oct 3, 2025
- Fax
- (425) 409-6618
- Medicare enrollment
- Enrolled (PECOS I20230630002809); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 1,089 in Washington → Look up another NPI →
Also registered at 22500 SE 64TH PL Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Josephine Hendrickson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PY00002719Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Western Psychological And Counseling Services LLCIssaquah, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Josephine Hendrickson among 1,089 psychologist records in Washington
Mary Josephine Hendrickson, PHD is one of 1,089 psychologist records with a practice address in Washington. 11% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 73% newer
- In a Medicare fileYes · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated1997 · median 2009 among the 226 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in Washington
There are 1,089 psychologist records in Washington.
All 1,089 in Washington → Every provider in Issaquah → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Joshua Blazen, EDSIssaquah, WA 980271801726211
- Duane Brickell, M.ED., PSY.D.Issaquah, WA 980271194054825
- Tonya Comstock, PH.D.Issaquah, WA 980271497085518
- Christina Diamonti, PSYDIssaquah, WA 980271073839627
- Sarah Hanson, LICENSED PSYCHOLOGISIssaquah, WA 980271386803211
- Sheila Hart, ED.DIssaquah, WA 980271427388560
- Edward Hudgins, PH.D.Issaquah, WA 980271184817298
- Nicole Josephsen, MAIssaquah, WA 980271639316896
Common questions
What is Mary Josephine Hendrickson, PHD's NPI number?
Mary Josephine Hendrickson, PHD's National Provider Identifier (NPI) is 1699755561, issued on Jan 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Josephine Hendrickson, PHD located?
The NPPES record lists a practice address at 22500 SE 64TH PL Ste 230, Issaquah, WA, 98027. Phone: (425) 409-6414. Providers update this record themselves, so call before visiting.
How can I verify Mary Josephine Hendrickson, PHD's license?
NPPES lists Washington license number PY00002719, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity 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.