Doctor profile · Federal record

Dr. Helen Mastro, RD

Registered Dietitian (CMS: Registered Dietitian or Nutrition Professional) · Somerville, MA

  • NPI 1730152638
  • Accepts Medicare
  • 47 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
40 Holland St
Somerville, MA 021442705
(617) 629-6287

Credentials & registration

NPPES · NUCC
NPI registered
February 2006 — 20 yrs on file
Profile last updated
October 28, 2020
Year of graduation
1979 — 47 yrs since
Specialty taxonomy
133V00000X — NUCC code
State license (1)
Massachusetts #861

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1730152638. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
205
Distinct HCPCS
2
Medicare allowed
$6,425
HCPCS Description Services Patients Avg allowed
97803 Therapy procedure reassessment for nutrition management, each 15 minutes 135 26 $30
97802 Therapy procedure for nutrition management, each 15 minutes 70 24 $34

In context: peer comparison

Among 1 peers in Somerville Registered Dietitian, average services per provider: 102. This provider delivers 2.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Helen Mastro's medical specialty?
Dr. Helen Mastro practices Registered Dietitian in Somerville, MA.
Where does Dr. Helen Mastro practice?
Dr. Helen Mastro practices at 40 Holland St, Somerville, MA 021442705. Office phone: 6176296287.
What is Dr. Helen Mastro's NPI?
Dr. Helen Mastro's National Provider Identifier (NPI) is 1730152638, issued by NPPES.
Does Dr. Helen Mastro accept Medicare assignment?
Yes. Dr. Helen Mastro accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Helen Mastro commonly perform?
Top Medicare-reported procedures in 2023: Therapy procedure reassessment for nutrition management (HCPCS 97803); Therapy procedure for nutrition management (HCPCS 97802). Source: CMS Medicare Physician & Other Practitioners file.