Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Natalie Buntzen, MS, RD

Individual provider Registered Dietitian · NPI 1477802486

Natalie Buntzen, MS, RD is registered under Registered Dietitian OR Nutrition Professional in Santa Ana, California. Qualified in 2005, 21 years ago. Practices with Healthcare Partners Affiliates Medical Group, a 790-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
21
Licensed in
CA
In the registry since
2012
What do these letters mean?
MS — Master of Science
A graduate science degree.
RD — Registered Dietitian
A credentialed nutrition professional.

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Practice location Address checks out

2212 E 4th St Ste 301
Santa Ana, CA 92705-3870 Not confirmed with CMS for 14 years — call before visiting
Phone: (714) 571-7734
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X · Licence 887861 (CA)

Record details

NPI number1477802486
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , RD
Sole proprietorNo
NPI enumeratedSeptember 5, 2012
Last updated in NPPESSeptember 5, 2012

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Healthcare Partners Affiliates Medical Group — 790 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients11
Services billed 18 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Healthcare Partners Affiliates Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 790 clinicians in the practice; 12 are shown here.

Other providers in Santa Ana