Helen Mastro, RD
Registered Dietitian · Somerville, MA
Helen Mastro, RD is a registered dietitian with a practice address in Somerville, Massachusetts, and NPI 1730152638, issued on Feb 10, 2006. Check the license (Massachusetts 861, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Helen Mastro
- Credential
- RD
- Primary taxonomy
- Registered Dietitian 133V00000X
- License number
- 861 MA
Self-reported in NPPES; status is on the state search - Practice location
- 40 Holland St, Somerville, MA 02144
- Phone
- (617) 629-6287
- Enumerated
- Feb 10, 2006
- Entity
- Type 1 · individual
Also registered at 40 Holland St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hala Ali Ibrahim, MDPediatrics Physician1902469877
- Carole Allen, M.D.Pediatrics Physician1275518235
- Andrew Angel, M.D.Internal Medicine Physician1417927724
- Dolly Arjun, PA-CPediatrics Physician1376924738
- Jill Ashcraft, DPMFoot & Ankle Surgery Podiatrist1316205909
- Rachel Berger, M.D.Internal Medicine Physician1326019456
Verify Helen Mastro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 861Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Bills Medicare through one group practice
- Atrius Health IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
26 registered dietitian records list a practice address in Somerville
They are 26 of the 1,860 NPPES records with a practice address in Somerville, and 2,244 registered dietitian records in Massachusetts.
All 26 in Somerville → All 2,244 in Massachusetts → Every provider in Somerville →
Other registered dietitian records in Massachusetts
- Lynn Abbott, RDBoston, MA1699006601
- Lauren Abeles, RD, RDNNeedham, MA1407621311
- Robin Abourizk, MA, MS, RD, LDNBoston, MA1073846945
- Christine Abrahamian, R.D.Framingham, MA1114149895
- Jenica Abram, MPH, RDN, LDNConcord, MA1891554325
- Jennifer Ackerman, MS, RD, LDN, CDEWinchester, MA1538349097
- Amy Adams, RDBrockton, MA1033976048
- Karin AdamsMarblehead, MA1316531502
- Rachel Adams, RDNMarblehead, MA1770438590
- Sarah Adler, MS RDN LDNBoston, MA1821741489
Common questions
What is Helen Mastro, RD's NPI number?
Helen Mastro, RD's National Provider Identifier (NPI) is 1730152638, issued on Feb 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Helen Mastro, RD located?
The NPPES record lists a practice address at 40 Holland St, Somerville, MA, 02144. Phone: (617) 629-6287. Providers update this record themselves, so call before visiting.
How can I verify Helen Mastro, RD's license?
NPPES lists Massachusetts license number 861, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.