Doctor profile · Federal record

Dr. Larissa Mattei, PA-C

Surgical Physician Assistant (CMS: Physician Assistant) · Medical Physician Assistant · Issaquah, WA

  • NPI 1033653142
  • Accepts Medicare
  • 10 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

Operates at 4 locations .

NPPES Updated May 11, 2026
Primary practice
510 8Th Ave Ne Ste 200
Issaquah, WA 980295436
(253) 392-3030
fax (425) 392-2564
Additional location
18100 Ne Union Hill RD Ste 330
Redmond, WA 980523330
(425) 455-3600
fax (425) 455-3920
Additional location
3101 Northup Way Ste 201
Bellevue, WA 980041449
(425) 455-3600
fax (425) 455-3920
Show 1 more location
Additional location
515 Minor Ave Ste 200
Seattle, WA 981042133
(425) 455-3600
Mailing address
510 8Th Ave Ne Ste 320
Issaquah, WA 980295436

Credentials & registration

NPPES · NUCC
NPI registered
December 2016 — 10 yrs on file
Profile last updated
May 13, 2024
Year of graduation
2016 — 10 yrs since
Specialty taxonomy
363AS0400X — NUCC code
State license (1)
Washington #PA60715586
Medicaid
WA #2078341

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1033653142. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
33
Distinct HCPCS
2
Medicare allowed
$2,863
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 18 18 $120
73502 X-ray of hip, 2-3 views 15 15 $47

In context: peer comparison

Among 7 peers in Issaquah Surgical Physician Assistant, average services per provider: 48. This provider delivers 0.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
178
Patients
174
Total drug cost
$10,862
Drug Type Claims Patients Total cost
Oxycodone Hcl Generic 39 38 $370
Ondansetron Odt (Ondansetron) Brand 38 38 $778
Tramadol Hcl Generic 38 36 $260
Celecoxib Generic 29 28 $1,344
Omeprazole Generic 20 20 $135
Eliquis (Apixaban) Brand 14 14 $7,975

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Larissa Mattei's medical specialty?
Dr. Larissa Mattei practices Surgical Physician Assistant in Issaquah, WA.
Where does Dr. Larissa Mattei practice?
Dr. Larissa Mattei practices at 510 8Th Ave Ne Ste 200, Issaquah, WA 980295436. Office phone: 2533923030.
What is Dr. Larissa Mattei's NPI?
Dr. Larissa Mattei's National Provider Identifier (NPI) is 1033653142, issued by NPPES.
Does Dr. Larissa Mattei accept Medicare assignment?
Yes. Dr. Larissa Mattei accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Larissa Mattei commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); X-ray of hip, 2-3 views (HCPCS 73502). Source: CMS Medicare Physician & Other Practitioners file.