Gianna Davis , RDN, LDN
Dietitian, Registered β’ Mesa, AZ
1705 W Main St
Mesa, AZ 852016920
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
1705 W Main St
Mesa, AZ 852016920
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Scottsdale, AZ. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
2025
What Public CMS Data Show
Dietitian, Registered: NPPES taxonomy is a reported classification, not proof of board certification.
Years since graduation
1 years (graduated 2025)
CMS Doctors and Clinicians data list 2025 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
NPI first issued
2025
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
May accept Medicare assignment
CMS data show this clinician may accept Medicare assignment. Clinicians who do not always accept assignment can decide case by case.
Ask the office before your visit. If a clinician does not accept assignment for a service, they can charge up to 15% more than the Medicare-approved amount, and you may be asked to pay the full amount at the visit.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Gianna Davis has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Mesa and Arizona
86 active clinicians are listed under Dietitian, Registered with a practice address in Mesa, AZ (1,455 in Arizona).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Mesa
9.3% of these 86 clinicians have the CMS telehealth indicator.
24.4% of these 86 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-11-03NUCC Taxonomy Code: 133V00000X
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - REGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
I20251114001047
AZ
6002307394
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
13400 E Shea Blvd
Scottsdale, AZ 852595452
Phone: 4803018000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Nurse Practitioner - Family
Doctor of Nursing Practice, Family Nurse Practitioner (Certified)
Nurse Practitioner - Family
Master of Science in Nursing, Advanced Practice Registered Nurse, Family Nurse Practitioner (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Internal Medicine - Geriatric Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Additional practice office at 13400 E Shea Blvd, Scottsdale, AZ 852595452
Registered at 13400 E SHEA BLVD, SCOTTSDALE, AZ 852595499 (Tel: 4803018000)
Dietitian, Registered (license number reported to NPPES: AZ 86374781)
NPI status registered as active in NPPES database
Registered at 1705 W MAIN ST, MESA, AZ 852016920 (Tel: 4809642273)
Registered at 977 GUMVIEW RD, WINDSOR, CA 954929415 (Tel: 7075363826)
Recorded as GIANNA DAVIS, RDN, LDN
Dietitian, Registered (license number reported to NPPES: IL 164.022716)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Dietitian, Registereds in Mesa
- Tina Alexander, RDN
- Wendy Green
- Audrey Lally, MS, RDN, CDE
- Rachel Raymond, RDN, RD
- Michelle Berman, MS, RDN, CDE
- Maya Schmitt
Mailing Address
13400 E Shea Blvd
Scottsdale, AZ 852595499
Phone: 4803018000