Clarissa Markham, RDN
NPI 1578969598 · Registered Dietitian · Scottsdale, AZ
Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Clarissa Markham, RDN is a Registered Dietitian provider in Scottsdale, AZ (NPI 1578969598).
Provider details
- NPI number
- 1578969598
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RDN
- Sex
- Female
- Sole proprietor
- No
- License
- 86033006 (WI)
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
11 yrs 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)
- 6601 West Thomas RoadPhoenix, AZ 85033Phone: (602) 243-7277Fax: (623) 247-9742
Registry dates
- Enumerated
- 2014-11-19
- Last updated
- 2023-01-19
- Certified
- 2023-01-19
Frequently asked questions
- What is Clarissa Markham's NPI number?
- Clarissa Markham's National Provider Identifier (NPI) is 1578969598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Clarissa Markham's specialty?
- Clarissa Markham is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Clarissa Markham located?
- Clarissa Markham's practice location on file with NPPES is 13400 E Shea Blvd, Scottsdale, AZ 85259-5452.
- What is Clarissa Markham's phone number?
- The practice phone number listed in the NPPES registry for Clarissa Markham is (804) 301-8000.
- Does Clarissa Markham accept Medicare?
- Clarissa Markham is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Clarissa Markham's NPI active?
- Yes — Clarissa Markham's NPI (1578969598) is active in the NPPES registry as of the last update on 2023-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.