NICHOLAI LEON MATHEWSON CRNA, MSN
NPI 1487291787
Nurse Anesthetist, Certified Registered in Portland, OR
About Nicholai Leon Mathewson Crna, Msn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NICHOLAI LEON MATHEWSON CRNA, MSN (NPI 1487291787) is an individual nurse anesthetist, certified registered in Portland, Oregon, licensed in California (95141062) and active in the NPI registry since December 2019. He is affiliated with Providence St Vincent Medical Center and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Nicholai Leon Mathewson Crna, Msn is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Nicholai Mathewson reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Portland, OR 97213
- Reassigned Medicare billing, Oregon enrollment
- 419 clinicians in this Medicare group
Milwaukie, OR 97222
- Reassigned Medicare billing, Oregon enrollment
- 183 clinicians in this Medicare group
Vancouver, WA 98664
- Reassigned Medicare billing, Oregon enrollment
- 108 clinicians in this Medicare group
Yreka, CA 96097
- Reassigned Medicare billing, California enrollment
- 140 clinicians in this Medicare group
Mount Shasta, CA 96067
- Reassigned Medicare billing, California enrollment
- 21 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence St Vincent Medical Center
Acute Care Hospitals · Portland, ORProvidence Portland Medical Center
Acute Care Hospitals · Portland, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97210 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORTLAND, OR 97210
PORTLAND, OR 97210
PORTLAND, OR 97210
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Nicholai Mathewson's NPI number?
The NPI number for Nicholai Mathewson is 1487291787. It was assigned to this individual provider in the NPPES registry on December 5, 2019.
Where is Nicholai Mathewson located?
Nicholai Mathewson practices at 1015 NW 22nd Ave, Portland, OR 97210. The listed phone number is (541) 601-0927.
What is Nicholai Mathewson's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Nicholai Mathewson enrolled in Medicare?
Yes. Nicholai Mathewson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Nicholai Mathewson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nicholai Mathewson reassigns Medicare benefits to 5 organizations: Hospitalist Medicine Physicians Of Washington - Tcs (Portland, OR), Anesthesia Associates Northwest LLC (Milwaukie, OR), Columbia Anesthesia Group P S (Vancouver, WA), Siskiyou Hospital, Inc. (Yreka, CA) and Parish Anesthesia Of California, A Professional Medical Corporation (Mount Shasta, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Nicholai Mathewson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Nicholai Mathewson affiliated with any hospitals?
According to CMS data, Nicholai Mathewson is affiliated with Providence St Vincent Medical Center and Providence Portland Medical Center.
When was this NPI record last updated?
The NPPES record for Nicholai Mathewson was last updated on December 5, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Nicholai Leon Mathewson, CRNA, MSN · NPI 1487291787
Nurse Anesthetist, Certified Registered physician in Portland, Oregon. Individual provider, active in the CMS NPPES registry since December 5, 2019.
## Identity
- **NPI:** 1487291787 (Entity type: Individual)
- **Enumerated:** December 5, 2019
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 95141062 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1015 NW 22ND AVE, Portland, OR 97210-3025
- **Phone:** (541) 601-0927
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Hospitalist Medicine Physicians Of Washington - Tcs (NPI 1649816380, Portland, OR); Anesthesia Associates Northwest LLC (NPI 1548281751, Milwaukie, OR); Columbia Anesthesia Group P S (NPI 1861448235, Vancouver, WA); Siskiyou Hospital, Inc. (NPI 1093892275, Yreka, CA); Parish Anesthesia Of California, A Professional Medical Corporation (NPI 1790106862, Mount Shasta, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** December 5, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1487291787) · Data from the CMS NPPES public registry.