Megan C. Merriwether, PH.D., CDP
Clinical Psychologist · Mill Creek, WA
Megan C. Merriwether, PH.D., CDP is a clinical psychologist with a practice address in Mill Creek, Washington, and NPI 1225209190, issued on Mar 18, 2008. Check the license (Washington PY 00003905, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Megan C. Merriwether
- Credential
- PH.D., CDP
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License numbers
- PY 00003905 WA
CP00005868 WA
Self-reported in NPPES; status is on the state search - Practice location
- 15418 Main St, Mill Creek, WA 98012
- Phone
- (425) 339-5453
- Enumerated
- Mar 18, 2008
- Record last updated
- Jan 2, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (425) 225-8028
- Medicare enrollment
- Enrolled (PECOS I20080930000808); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,675 in Washington → Look up another NPI →
Also registered at 15418 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brianna Baublitz, DNP, ARNPFamily Nurse Practitioner1073206520
- Jeffrey Bissey, MDInternal Medicine Physician1700840832
- Jessica Brandt, ARNPNurse Practitioner1063726701
- Jody Friday, PA-CPhysician Assistant1306916333
- Stephanie Garrison, PSYDClinical Psychologist1558599274
- Jennifer Gross, PSYDClinical Psychologist1023197951
Verify Megan C. Merriwether in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PY 00003905Check 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
- Bluestone Psychological Services LLCEdmonds, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Megan C. Merriwether among 1,675 clinical psychologist records in Washington
Megan C. Merriwether, PH.D., CDP is one of 1,675 clinical psychologist records with a practice address in Washington. 13% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 53% newer
- In a Medicare fileYes · 13% of these records are
- In the CMS Doctors and Clinicians fileYes · 23% of these records are
- Graduated2007 · median 2009 among the 386 with a school on file
- Record last updated2014 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 clinical psychologist records list a practice address in Mill Creek
They are 12 of the 554 NPPES records with a practice address in Mill Creek, and 1,675 clinical psychologist records in Washington.
All 1,675 in Washington → Every provider in Mill Creek → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Adrianne Altman, PH.D.Mill Creek, WA 980121730365776
- Matthew De Haan, PSY.D.Mill Creek, WA 980121578870648
- Stephanie Garrison, PSYDMill Creek, WA 980121558599274
- Barbara Graham, PH.D.Mill Creek, WA 980121528390424
- Jennifer Gross, PSYDMill Creek, WA 980121023197951
- Susan Johannsen, PSYDMill Creek, WA 980121063026417
- Christian Quayle, PH.D.Mill Creek, WA 980121558438952
- David Rasmussen, PSY.D.Mill Creek, WA 980121699830364
Common questions
What is Megan C. Merriwether, PH.D., CDP's NPI number?
Megan C. Merriwether, PH.D., CDP's National Provider Identifier (NPI) is 1225209190, issued on Mar 18, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Megan C. Merriwether, PH.D., CDP located?
The NPPES record lists a practice address at 15418 Main St, Mill Creek, WA, 98012. Phone: (425) 339-5453. Providers update this record themselves, so call before visiting.
How can I verify Megan C. Merriwether, PH.D., CDP's license?
NPPES lists Washington license number PY 00003905, 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.