Mary E. Fredericks, ARNP
Psychiatric/Mental Health Nurse Practitioner · Olympia, WA
Mary E. Fredericks, ARNP is a psychiatric/mental health nurse practitioner with a practice address in Olympia, Washington, and NPI 1306188032, issued on Mar 20, 2013. Check the license (Washington AP60491874, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary E. Fredericks
- Credential
- ARNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- AP60491874 WA
Self-reported in NPPES; status is on the state search - Practice location
- 413 Lilly RD NE, Olympia, WA 98506
- Phone
- (360) 493-7060
- Enumerated
- Mar 20, 2013
- Record last updated
- May 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (360) 493-7562
- Medicare enrollment
- Enrolled (PECOS I20150112001030); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 1,875 in Washington → Look up another NPI →
Also registered at 413 Lilly RD NE
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary E. Fredericks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP60491874Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
777 Medicare Part D claims for 46 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Dextroamphetamine-Amphetamine64 claims
- Clonazepam63 claims
- Quetiapine Fumarate57 claims
- Gabapentin53 claims
- Lamotrigine41 claims
- Lorazepam35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Wagaman Enterprises IncOlympia, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary E. Fredericks among 1,875 psychiatric/mental health nurse practitioner records in Washington
Mary E. Fredericks, ARNP is one of 1,875 psychiatric/mental health nurse practitioner records with a practice address in Washington. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 26% of them.
- NPI issued2013 · 26% of these records are older, 71% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated2014 · median 2020 among the 904 with a school on file
- Record last updated2021 · 28% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
52 psychiatric/mental health nurse practitioner records list a practice address in Olympia
They are 52 of the 5,034 NPPES records with a practice address in Olympia, and 1,875 psychiatric/mental health nurse practitioner records in Washington.
All 1,875 in Washington → Every provider in Olympia → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Ruth Amarok, APRNOlympia, WA 985061134697964
- Jennifer Clingenpeel, ARNPOlympia, WA 985061992886956
- Celia Forno, PMHNPOlympia, WA 985061437293909
- Peter Hausman, ARNP, PMHNP-BCOlympia, WA 985061497234892
- Jonathan Hickman, PMHNP-BCOlympia, WA 985061649613555
- Nancy Holzinger, ARNPOlympia, WA 985061376551408
- Toddy Ingram, ARNP-PMHOlympia, WA 985061891987715
- Diana Liebner, ARNPOlympia, WA 985061124400783
Common questions
What is Mary E. Fredericks, ARNP's NPI number?
Mary E. Fredericks, ARNP's National Provider Identifier (NPI) is 1306188032, issued on Mar 20, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mary E. Fredericks, ARNP located?
The NPPES record lists a practice address at 413 Lilly RD NE, Olympia, WA, 98506. Phone: (360) 493-7060. Providers update this record themselves, so call before visiting.
How can I verify Mary E. Fredericks, ARNP's license?
NPPES lists Washington license number AP60491874, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Mary E. Fredericks, ARNP prescribe under Medicare Part D?
In 2024, Mary E. Fredericks, ARNP had 777 Medicare Part D claims for 46 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions 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.