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

Dr. Nicholas An, MD

Individual provider Anesthesiology Physician · NPI 1306228853

Dr. Nicholas An, MD practises Anesthesiology in Portland, Oregon. Graduated from University of Texas Medical Branch at Galveston in 2015, 11 years ago. Practices with Matrix Anesthesia, Ps, a 87-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Oregon.

Years since qualifying
11
Trained at
University of Texas Medical Branch at Galveston
Licensed in
CA, OR
In the registry since
2015
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3181 SW Sam Jackson Park Rd # 2
Portland, OR 97239-3098
Phone: (503) 494-7641
Fax: (503) 494-8368
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 757 Westwood Plz Ste 3325, Los Angeles, CA 90095-6402 — (310) 267-3899

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD197425 (OR)
Anesthesiology Physician Taxonomy 207L00000X · Licence A162035 (CA)

Record details

NPI number1306228853
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2015
Last updated in NPPESJuly 3, 2020
Certification dateJuly 3, 2020

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL BRANCH AT GALVESTON
Graduated 2015 (11 years in practice)
Group practice Matrix Anesthesia, Ps — 87 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 patients82
Services billed 93 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 Matrix Anesthesia, Ps

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 87 clinicians in the practice; 12 are shown here.

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