Doctor profile · Federal record

Dr. Amir Modarressi, MD

Hematology & Oncology Physician (CMS: Hematology/Oncology) · Seattle, WA

  • NPI 1841223716
  • Accepts Medicare
  • 34 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
201 16Th Ave E
Seattle, WA 981125226
(206) 326-3000
Additional location
500 Lennon Ln
Walnut Creek, CA 945982415
(925) 939-9610
fax (925) 939-9630

Credentials & registration

NPPES · NUCC
NPI registered
July 2006 — 20 yrs on file
Profile last updated
April 27, 2021
Year of graduation
1992 — 34 yrs since
Specialty taxonomy
207RH0003X — NUCC code
State license (1)
California #A84717

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1841223716. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$200
Transactions
1
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
SOBI, INC 1 $200.00

By nature of payment

Consulting Fee
$200

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
701
Patients
141
Total drug cost
$1,005,633
Drug Type Claims Patients Total cost
Dexamethasone Generic 130 26 $1,883
Anastrozole Generic 124 38 $3,301
Prednisone Generic 79 15 $583
Abiraterone Acetate Generic 66 0 $9,869
Hydroxyurea Generic 53 13 $2,598
Prochlorperazine Maleate Generic 38 26 $489
Lenalidomide Generic 37 0 $486,159
Ondansetron Hcl Generic 35 23 $283
Tamoxifen Citrate Generic 33 0 $941
Nivestym (Filgrastim-Aafi) Brand 28 0 $18,157

Frequently asked questions

Auto-generated from federal data
What is Dr. Amir Modarressi's medical specialty?
Dr. Amir Modarressi practices Hematology & Oncology Physician in Seattle, WA.
Where does Dr. Amir Modarressi practice?
Dr. Amir Modarressi practices at 201 16Th Ave E, Seattle, WA 981125226. Office phone: 2063263000.
What is Dr. Amir Modarressi's NPI?
Dr. Amir Modarressi's National Provider Identifier (NPI) is 1841223716, issued by NPPES.
Does Dr. Amir Modarressi accept Medicare assignment?
Yes. Dr. Amir Modarressi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.