Katie Mathlin, RDN
NPI 1851745657 · Registered Dietitian · Portsmouth, NH
Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katie Mathlin, RDN is a Registered Dietitian provider in Portsmouth, NH (NPI 1851745657).
Provider details
- NPI number
- 1851745657
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RDN
- Sex
- Female
- Sole proprietor
- Yes
- License
- 0689 (NH)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
Mailing address
Registry dates
- Enumerated
- 2016-04-18
- Last updated
- 2017-09-15
Frequently asked questions
- What is Katie Mathlin's NPI number?
- Katie Mathlin's National Provider Identifier (NPI) is 1851745657, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katie Mathlin's specialty?
- Katie Mathlin is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Katie Mathlin located?
- Katie Mathlin's practice location on file with NPPES is 15 Rye St, Portsmouth, NH 03801-6829.
- What is Katie Mathlin's phone number?
- The practice phone number listed in the NPPES registry for Katie Mathlin is (774) 282-0364.
- Does Katie Mathlin accept Medicare?
- Katie Mathlin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katie Mathlin's NPI active?
- Yes — Katie Mathlin's NPI (1851745657) is active in the NPPES registry as of the last update on 2017-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.