IndividualActive
Ann Efstathion, MS, RD, LDN
NPI 1194979138 · Registered Dietitian · Boston, MA
Ann Efstathion, MS, RD, LDN is a Registered Dietitian provider in Boston, MA (NPI 1194979138).
Provider details
- NPI number
- 1194979138
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MS, RD, LDN
- Sex
- Female
- Sole proprietor
- No
- License
- 1480 (MA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
800 Washington St.
Tuft'S Medical Center Frances Stern Nutrition Center
Boston, MA 02111
Phone: (617) 636-5273
Fax: (617) 636-8325
Street-level locationGet directions
Mailing address
800 Washington St.
Boston, MA 02111
Registry dates
- Enumerated
- 2008-11-04
- Last updated
- 2008-11-04
Frequently asked questions
- What is Ann Efstathion's NPI number?
- Ann Efstathion's National Provider Identifier (NPI) is 1194979138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ann Efstathion's specialty?
- Ann Efstathion is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Ann Efstathion located?
- Ann Efstathion's practice location on file with NPPES is 800 Washington St., Boston, MA 02111.
- What is Ann Efstathion's phone number?
- The practice phone number listed in the NPPES registry for Ann Efstathion is (617) 636-5273.
- Is Ann Efstathion's NPI active?
- Yes — Ann Efstathion's NPI (1194979138) is active in the NPPES registry as of the last update on 2008-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.