Timothy Dennis Mahoney, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Bellingham, WA
Timothy Dennis Mahoney, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Bellingham, Washington, and NPI 1871048652, issued on Aug 22, 2016. Check the license (Washington AP61366257, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Timothy Dennis Mahoney
- Credential
- PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- AP61366257 WA
Self-reported in NPPES; status is on the state search - Practice location
- PO Box 28032, Bellingham, WA 98228
- Phone
- (509) 761-9881
- Enumerated
- Aug 22, 2016
- Record last updated
- Apr 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20260313000193); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 1,875 in Washington → Look up another NPI →
Verify Timothy Dennis Mahoney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license AP61366257Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
39% more Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
1,260 Medicare Part D claims for 63 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Clozapine149 claims
- Quetiapine Fumarate102 claims
- Risperidone87 claims
- Benztropine Mesylate60 claims
- Lamotrigine52 claims
- Fluoxetine Hcl44 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.
Timothy Dennis Mahoney among 1,875 psychiatric/mental health nurse practitioner records in Washington
Timothy Dennis Mahoney, PMHNP 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 2016, is newer than 36% of them.
- NPI issued2016 · 36% of these records are older, 60% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 48% of these records are
- Graduated2022 · median 2020 among the 904 with a school on file
- Record last updated2025 · 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).
Psychiatric/Mental Health Nurse Practitioner providers in Washington
There are 1,875 psychiatric/mental health nurse practitioner records in Washington.
All 1,875 in Washington → Every provider in Bellingham → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Scott Allen, PMHNP-BCBellingham, WA 982261265981831
- Charles Anstett, ARNPBellingham, WA 982261164774824
- Kara BaumullerBellingham, WA 982261063147890
- Nancy Dearborn, ARNPBellingham, WA 982261427135854
- Marguerite Gibson, ARNPBellingham, WA 982261376503227
- Tiffany Graham, ARNPBellingham, WA 982261134597727
- Rita Kostelik, ARNPBellingham, WA 982261003009135
- Adeola OluwatokiBellingham, WA 982261073155313
Common questions
What is Timothy Dennis Mahoney, PMHNP's NPI number?
Timothy Dennis Mahoney, PMHNP's National Provider Identifier (NPI) is 1871048652, issued on Aug 22, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Dennis Mahoney, PMHNP located?
The NPPES record lists a practice address at PO Box 28032, Bellingham, WA, 98228. Phone: (509) 761-9881. Providers update this record themselves, so call before visiting.
How can I verify Timothy Dennis Mahoney, PMHNP's license?
NPPES lists Washington license number AP61366257, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Timothy Dennis Mahoney, PMHNP prescribe under Medicare Part D?
In 2024, Timothy Dennis Mahoney, PMHNP had 1,260 Medicare Part D claims for 63 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.