Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Nathan Tolley, DO

Individual provider Psychiatry Physician · NPI 1235666389

Nathan Tolley, DO practises Psychiatry in Mount Vernon, Washington. Graduated from Lake Erie Col of Osteo Med at Seton Hill Univ in 2017, 9 years ago. Practices with Public Hospital Dist No 1 Skagit, a 321-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Colorado and Washington.

Years since qualifying
9
Trained at
Lake Erie Col of Osteo Med at Seton Hill Univ
Licensed in
CO, WA
In the registry since
2017
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

901 S 5th St
Mount Vernon, WA 98274-3942
Phone: (360) 814-7300
Fax: (360) 848-4543
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence OP61220523 (WA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 0061698 (CO)

Record details

NPI number1235666389
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMay 20, 2017
Last updated in NPPESDecember 10, 2025
Certification dateDecember 10, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolLAKE ERIE COL OF OSTEO MED AT SETON HILL UNIV
Graduated 2017 (9 years in practice)
Group practice Public Hospital Dist No 1 Skagit — 321 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients110
Services billed 301 a service is one billed item, such as a visit, a test or a procedure
Average patient age62

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Public Hospital Dist No 1 Skagit

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 321 clinicians in the practice; 12 are shown here.

Other providers in Mount Vernon