What is Nissa Harrington's NPI number?

Nissa Harrington's National Provider Identifier (NPI) is 1891247466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Nissa Harrington's specialty?

Nissa Harrington is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).

Where is Nissa Harrington located?

Nissa Harrington's practice location on file with NPPES is 1921 Stonecipher Blvd, Ada, OK 74820.

What is Nissa Harrington's phone number?

The practice phone number listed in the NPPES registry for Nissa Harrington is (580) 421-4570.

Does Nissa Harrington accept Medicare?

Nissa Harrington is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Nissa Harrington's NPI active?

Yes — Nissa Harrington's NPI (1891247466) is active in the NPPES registry as of the last update on 2016-10-31.

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Nissa Harrington, RD/LD

NPI 1891247466 · Registered Dietitian · Ada, OK

Nissa Harrington, RD/LD is a Registered Dietitian provider in Ada, OK (NPI 1891247466).

Provider details

NPI number: 1891247466
Entity type: Individual
Primary specialty: Registered DietitianDietary & Nutritional Service Providers
Credential: RD/LD
Sex: Female
Sole proprietor: No
License: 1633 (OK)

Practice location

1921 Stonecipher Blvd

Ada, OK 74820

Phone: (580) 421-4570

Approximate (ZIP-level) locationGet directions

More OK providers

Mailing address

1921 Stonecipher Blvd

Ada, OK 74820

Specialties & taxonomies

Registered DietitianPrimary133V00000XLicense 1633 (OK)
Dietary & Nutritional Service Providers

Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(72/100 index)

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.

Enumerated: 2016-10-31
Last updated: 2016-10-31

Frequently asked questions

What is Nissa Harrington's NPI number?: Nissa Harrington's National Provider Identifier (NPI) is 1891247466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Nissa Harrington's specialty?: Nissa Harrington is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
Where is Nissa Harrington located?: Nissa Harrington's practice location on file with NPPES is 1921 Stonecipher Blvd, Ada, OK 74820.
What is Nissa Harrington's phone number?: The practice phone number listed in the NPPES registry for Nissa Harrington is (580) 421-4570.
Does Nissa Harrington accept Medicare?: Nissa Harrington is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Nissa Harrington's NPI active?: Yes — Nissa Harrington's NPI (1891247466) is active in the NPPES registry as of the last update on 2016-10-31.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions