Doctor profile · Federal record

Dr. Amir Fathi, M.D.

Hematology & Oncology Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Hematology & Oncology Physician · Boston, MA

  • NPI 1548358476
  • Accepts Medicare
  • 22 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
55 Fruit St
Boston, MA 021142621
(617) 724-1124
fax (617) 724-1126
Additional location
75 Francis St
Boston, MA 021156106
(617) 732-5500

Credentials & registration

NPPES · NUCC
NPI registered
October 2006 — 20 yrs on file
Profile last updated
February 2, 2026
Year of graduation
2004 — 22 yrs since
Specialty taxonomy
207RH0003X — NUCC code
State licenses (2)
Massachusetts #230287 · Maryland #D0065799

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1548358476. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
718
Distinct HCPCS
4
Medicare allowed
$99,641
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 380 63 $126
99215 Established patient office or other outpatient visit, 40-54 minutes 286 75 $153
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 35 28 $184
99238 Hospital discharge day management, 30 minutes or less 17 17 $87

In context: peer comparison

Among 64 peers in Boston Hematology & Oncology Physician, average services per provider: 129. This provider delivers 5.6× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$8,502
Transactions
13
Manufacturers
6
Payer (manufacturer) Industry Txns Amount
Astellas Pharma Global Development 1 $2,652.00
E.R. Squibb & Sons, L.L.C. 2 $2,091.00
AstraZeneca Pharmaceuticals Lp 2 $1,712.50
Abbvie INC. 2 $1,524.71
Daiichi Sankyo INC. 5 $446.16
Astellas Pharma US INC 1 $75.66

By nature of payment

Consulting Fee
$7,816
Food and Beverage
$687

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
38
Patients
0
Total drug cost
$139,017
Drug Type Claims Patients Total cost
Acyclovir Generic 25 0 $779
Sprycel (Dasatinib) Brand 13 0 $138,238

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Amir Fathi's medical specialty?
Dr. Amir Fathi practices Hematology & Oncology Physician in Boston, MA.
Where does Dr. Amir Fathi practice?
Dr. Amir Fathi practices at 55 Fruit St, Boston, MA 021142621. Office phone: 6177241124.
What is Dr. Amir Fathi's NPI?
Dr. Amir Fathi's National Provider Identifier (NPI) is 1548358476, issued by NPPES.
Does Dr. Amir Fathi accept Medicare assignment?
Yes. Dr. Amir Fathi accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Amir Fathi commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99215); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.