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NATALIE BUNTZEN M.S., R.D.
NPI 1477802486
Dietitian, Registered in Santa Ana, CA

Active since September 05, 2012
2212 E 4TH ST, SUITE 301, SANTA ANA, CA 92705(714) 571-7734 Get Directions Write a Review

NPPES record last updated: September 5, 2012. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Natalie Buntzen M.s., R.d. NPPES

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

NATALIE BUNTZEN M.S., R.D. (NPI 1477802486) is an individual dietitian, registered in Santa Ana, California, licensed in California (887861) and active in the NPI registry since September 2012.

NPPES Registry Identity

NPI1477802486
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameNATALIE BUNTZENCredential: M.S., R.D.
Location Address2212 E 4TH ST, SUITE 301Santa Ana, CA 92705-3870
Mailing Address2212 E 4th St, Suite 301Santa Ana, CA 92705-3870 · (714) 571-7734
Phone(714) 571-7734
Sole ProprietorNo
Enumeration DateSeptember 5, 2012
✔ NPI 1477802486 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDietitian, RegisteredDietary & Nutritional Service Providers
Taxonomy Code133V00000X
License✔ Licensed in CA · 887861
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.
2212 E 4TH ST, Santa Ana, CA 92705
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Natalie Buntzen M.s., R.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

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

Healthcare Partners Affiliates Medical Group
1.1 mi
Addiction Medicine
14591 NEWPORT AVE
Tustin, CA 92780
  • Reassigned Medicare billing, California enrollment
  • 2,052 clinicians in this Medicare group
NPI 1891981502 (714) 442-4864

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 16

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

JOHN L WINKELMAN M.D.
Pediatrics
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 288-3230
PAULA M PARTCH R.D.
Dietitian, Registered
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 628-3242
CATHERINE ANN GOLDBERG MPH
Health Educator
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 628-3242
LIAN BACH D.O.
Family Medicine
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 288-3230
CINDY CANTT RD
Dietitian, Registered
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 628-3242
ST. JOSEPH HOSPITAL OF ORANGE
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 771-8000
TAYLOR TRAM TRAN MD
Pediatrics
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 288-3230
CRYSTAL FAME DO
Family Medicine
2212 E 4TH ST
SANTA ANA, CA 92705
Orange County (714) 618-9540

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 Natalie Buntzen's NPI number?

The NPI number for Natalie Buntzen is 1477802486. It was assigned to this individual provider in the NPPES registry on September 5, 2012.

Where is Natalie Buntzen located?

Natalie Buntzen practices at 2212 E 4th St Suite 301, Santa Ana, CA 92705. The listed phone number is (714) 571-7734.

What is Natalie Buntzen's specialty?

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

Is Natalie Buntzen enrolled in Medicare?

Yes. Natalie Buntzen is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Natalie Buntzen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Natalie Buntzen reassigns Medicare benefits to Healthcare Partners Affiliates Medical Group (Tustin, CA). 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 Natalie Buntzen'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 Natalie Buntzen was last updated on September 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.