Doctor profile · Federal record

Dr. David Sweetser, MD

Clinical Genetics (M.D.) Physician (CMS: Hematology/Oncology) · Pediatrics Physician · Clinical Biochemical Genetics Physician · Pediatric Hematology & Oncology Physician · Boston, MA

  • NPI 1558320762
  • Accepts Medicare
  • 37 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
55 Fruit St Yaw 8B, Pediatric Hematology Oncology
Boston, MA 021142696
(617) 726-2737
fax (617) 724-0702
Mailing address
Po Box 9142, Mass General Physician Organization
Charlestown, MA 021299142

Credentials & registration

NPPES · NUCC
NPI registered
March 2006 — 20 yrs on file
Profile last updated
January 15, 2019
Year of graduation
1989 — 37 yrs since
Specialty taxonomy
207SG0201X — NUCC code
State license (1)
Massachusetts #216677
Medicaid
MA #2007801

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1558320762. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
78
Distinct HCPCS
2
Medicare allowed
$5,107
HCPCS Description Services Patients Avg allowed
G2212 Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or 62 19 $33
99215 Established patient office or other outpatient visit, 40-54 minutes 16 13 $190

In context: peer comparison

Among 4 peers in this city , average services per provider: 21. This provider delivers 3.7× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
64
Patients
0
Total drug cost
$1,263,686
Drug Type Claims Patients Total cost
Levocarnitine Generic 32 0 $4,886
Ravicti (Glycerol Phenylbutyrate) Brand 18 0 $1,252,649
Leucovorin Calcium Generic 14 0 $6,150

Frequently asked questions

Auto-generated from federal data
What is Dr. David Sweetser's medical specialty?
Dr. David Sweetser practices Clinical Genetics (M.D.) Physician in Boston, MA.
Where does Dr. David Sweetser practice?
Dr. David Sweetser practices at 55 Fruit St Yaw 8B, Boston, MA 021142696. Office phone: 6177262737.
What is Dr. David Sweetser's NPI?
Dr. David Sweetser's National Provider Identifier (NPI) is 1558320762, issued by NPPES.
Does Dr. David Sweetser accept Medicare assignment?
Yes. Dr. David Sweetser accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Sweetser commonly perform?
Top Medicare-reported procedures in 2023: Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (HCPCS G2212); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.