Doctor profile · Federal record

Dr. Sarah Lassey, M.D.

Maternal & Fetal Medicine Physician (CMS: Obstetrics/Gynecology) · Student in an Organized Health Care Education/Training Program · Boston, MA

  • NPI 1265878623
  • Accepts Medicare
  • 13 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
75 Francis St
Boston, MA 021156110
(617) 732-5500
Mailing address
375 Boylston St
Brookline, MA 024456007

Credentials & registration

NPPES · NUCC
NPI registered
May 2013 — 13 yrs on file
Profile last updated
July 21, 2022
Year of graduation
2013 — 13 yrs since
Specialty taxonomy
207VM0101X — NUCC code
State license (1)
Massachusetts #270637

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1265878623. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
28
Distinct HCPCS
2
Medicare allowed
$3,406
HCPCS Description Services Patients Avg allowed
76830 Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina 14 14 $132
76856 Complete ultrasound scan of pelvis 14 14 $111

In context: peer comparison

Among 1 peers in Boston Maternal & Fetal Medicine Physician, average services per provider: 14. This provider delivers 2.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Sarah Lassey's medical specialty?
Dr. Sarah Lassey practices Maternal & Fetal Medicine Physician in Boston, MA.
Where does Dr. Sarah Lassey practice?
Dr. Sarah Lassey practices at 75 Francis St, Boston, MA 021156110. Office phone: 6177325500.
What is Dr. Sarah Lassey's NPI?
Dr. Sarah Lassey's National Provider Identifier (NPI) is 1265878623, issued by NPPES.
Does Dr. Sarah Lassey accept Medicare assignment?
Yes. Dr. Sarah Lassey accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sarah Lassey commonly perform?
Top Medicare-reported procedures in 2023: Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina (HCPCS 76830); Complete ultrasound scan of pelvis (HCPCS 76856). Source: CMS Medicare Physician & Other Practitioners file.