Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Nicholai Leon Mathewson, CRNA, MSN

Individual provider Certified Registered Nurse Anesthetist · NPI 1487291787

Nicholai Leon Mathewson, CRNA, MSN is registered under Certified Registered Nurse Anesthetist (CRNA) in Portland, Oregon. Qualified in 2019, 7 years ago. Practices with Hospitalist Medicine Physicians of Washington - Tcs, a 208-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
7
Licensed in
CA
In the registry since
2019
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1015 NW 22nd Ave
Portland, OR 97210-3025
Phone: (541) 601-0927
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 95141062 (CA)

Record details

NPI number1487291787
Entity typeIndividual (Type 1)
GenderMale
Credentials CRNA , MSN
Sole proprietorYes
NPI enumeratedDecember 5, 2019
Last updated in NPPESDecember 5, 2019

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Hospitalist Medicine Physicians Of Washington - Tcs — 208 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients117
Services billed 181 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $142 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Hospitalist Medicine Physicians of Washington - Tcs

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 208 clinicians in the practice; 12 are shown here.

Other providers in Portland