ROCIO ANN MARQUEZ RDN
NPI 1396524666
Dietitian, Registered in Phoenix, AZ

Active since September 26, 2023
4212 N 16TH ST, PHOENIX, AZ 85016(602) 581-6048 Get Directions Write a Review

NPPES record last updated: September 26, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Rocio Ann Marquez Rdn NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ROCIO ANN MARQUEZ RDN (NPI 1396524666) is an individual dietitian, registered in Phoenix, Arizona and active in the NPI registry since September 2023.

NPPES Registry Identity

NPI1396524666
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameROCIO ANN MARQUEZCredential: RDN
Location Address4212 N 16TH STPhoenix, AZ 85016-5319
Mailing Address4212 N 16th StPhoenix, AZ 85016-5319
Sole ProprietorNo
Enumeration DateSeptember 26, 2023
NPPES CertifiedSeptember 26, 2023
✔ NPI 1396524666 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
Definition
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.
4212 N 16TH ST, Phoenix, AZ 85016

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rocio Ann Marquez Rdn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Rocio Marquez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Public Health or Welfare
4212 N 16TH ST
Phoenix, AZ 85016
  • Reassigned Medicare billing, Texas enrollment
  • 599 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Registered Nurse (Obstetric, High-Risk)
4212 N 16TH ST
PHOENIX, AZ 85016
Registered Nurse
4212 N 16TH ST
PHOENIX, AZ 85016
Family Medicine
4212 N 16TH ST
PHOENIX, AZ 85016
Registered Nurse
4212 N 16TH ST
PHOENIX, AZ 85016
Pharmacist
4212 N 16TH ST
PHOENIX, AZ 85016
Pharmacist
4212 N 16TH ST
PHOENIX, AZ 85016
Internal Medicine
4212 N 16TH ST
PHOENIX, AZ 85016
Registered Nurse
4212 N 16TH ST
PHOENIX, AZ 85016

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Rocio Marquez's NPI number?

The NPI number for Rocio Marquez is 1396524666. It was assigned to this individual provider in the NPPES registry on September 26, 2023.

Where is Rocio Marquez located?

Rocio Marquez practices at 4212 N 16th St, Phoenix, AZ 85016. The listed phone number is (602) 581-6048.

What is Rocio Marquez's specialty?

The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.

Is Rocio Marquez enrolled in Medicare?

Yes. Rocio Marquez is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Rocio Marquez's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Rocio Marquez reassigns Medicare benefits to Dhew Ind Hlth Sv Hlth Svs & Mntl Hlth Adm (Phoenix, AZ). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Rocio Marquez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Rocio Marquez was last updated on September 26, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.