Mary Ellen Swydan, MS RDN LDN
NPI 1659118735 · Registered Dietitian · Marlborough, MA
Mary Ellen Swydan, MS RDN LDN is a Registered Dietitian provider in Marlborough, MA (NPI 1659118735).
Provider details
- NPI number
- 1659118735
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MS RDN LDN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 66 (MA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Mailing address
Additional practice locations (1)
- 201 Highland StClinton, MA 01510-1096Phone: (508) 873-1857
Registry dates
- Enumerated
- 2024-07-15
- Last updated
- 2024-07-15
- Certified
- 2024-07-12
Frequently asked questions
- What is Mary Ellen Swydan's NPI number?
- Mary Ellen Swydan's National Provider Identifier (NPI) is 1659118735, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Ellen Swydan's specialty?
- Mary Ellen Swydan is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Mary Ellen Swydan located?
- Mary Ellen Swydan's practice location on file with NPPES is 157 Union St, Marlborough, MA 01752-1228.
- What is Mary Ellen Swydan's phone number?
- The practice phone number listed in the NPPES registry for Mary Ellen Swydan is (508) 873-1857.
- Is Mary Ellen Swydan's NPI active?
- Yes — Mary Ellen Swydan's NPI (1659118735) is active in the NPPES registry as of the last update on 2024-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.