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TIANNA NILSEN M.S., R.D.
NPI 1558895383
Dietitian, Registered in Murrieta, CA

Active since April 19, 2017Accepts Medicare Assignment
29970 TECHNOLOGY DR STE 118, MURRIETA, CA 92563(760) 716-1274 Get Directions Write a Review

NPPES record last updated: January 17, 2024. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 19, 2021, May 7, 2020, Apr 19, 2017 (3 updates tracked since 2017).

About Tianna Nilsen M.s., R.d. NPPES

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

TIANNA NILSEN M.S., R.D. (NPI 1558895383) is an individual dietitian, registered in Murrieta, California, licensed in California (1069733) and active in the NPI registry since April 2017. She is a graduate of Other (2012).

NPPES Registry Identity

NPI1558895383
Entity TypeIndividualFemale
Primary Taxonomy133V00000X
Provider Legal NameTIANNA NILSENCredential: M.S., R.D.
Location Address29970 TECHNOLOGY DR STE 118Murrieta, CA 92563-2647
Mailing Address29970 Technology Dr Ste 118Murrieta, CA 92563-2647 · (951) 365-7193
Phone(760) 716-1274
Sole ProprietorNo
Medical School CMSOtherGraduated 2012
Enumeration DateApril 19, 2017
Last NPPES UpdateJanuary 17, 20243 updates tracked since enumeration
NPPES CertifiedJanuary 17, 2024
✔ NPI 1558895383 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 · 1069733
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.
29970 TECHNOLOGY DR STE 118, Murrieta, CA 92563
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Other Names 1

Former Name (1)Tianna Smith M.s., R.d.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Tianna Nilsen M.s., R.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4284086943
PECOS Enrollment IDI20240118000378

Medicare Billing Reassignment

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

Temecula Dietitians, Inc.
Same address
Dietitian, Registered
29970 TECHNOLOGY DR STE 118
Murrieta, CA 92563
  • Reassigned Medicare billing, California enrollment
  • 6 clinicians in this Medicare group
NPI 1104495431 (760) 716-1274

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Therapy procedure reassessment for nutrition management, each 15 minutes 97803
This is a process where a healthcare professional reviews your nutritional needs every 15 minutes. It's part of managing your diet to ensure optimal health. The review may involve adjusting your meal plans, evaluating your body's response to certain foods, and monitoring your overall nutrition status.
72 services11 patients
Therapy procedure for nutrition management, each 15 minutes 97802
This is a 15-minute session focused on managing your nutrition. A professional will assess your dietary habits and provide personalized advice to improve your health. It can help manage weight, control chronic diseases, and promote overall wellbeing.
48 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92563 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $59.60 – $179.42
Typical copayment $0.00 (range $14.90 – $44.85)
Most-billed visit code NA
Established Patient
$104.64 typical visit price
range $19.37 – $146.42
Typical copayment $26.16 (range $4.84 – $36.60)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 5

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

TEMECULA DIETITIANS, INC.
Dietitian, Registered
29970 TECHNOLOGY DR STE 118
MURRIETA, CA 92563
Riverside County (760) 716-1274
PAMELA JOHNSON RD
Dietitian, Registered
29970 TECHNOLOGY DR STE 118
MURRIETA, CA 92563
Riverside County (508) 410-2628
MIKAELA DUFFY RDN, LDN
Dietitian, Registered
29970 TECHNOLOGY DR STE 118
MURRIETA, CA 92563
Riverside County (951) 365-7193
DEANNA GOLDSTEIN
Dietitian, Registered
29970 TECHNOLOGY DR STE 118
MURRIETA, CA 92563
Riverside County (847) 800-7652
VICTORIA R PADRON RD, LD, CD
Dietitian, Registered
29970 TECHNOLOGY DR STE 118
MURRIETA, CA 92563
Riverside County (951) 365-7193

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 Tianna Nilsen's NPI number?

The NPI number for Tianna Nilsen is 1558895383. It was assigned to this individual provider in the NPPES registry on April 19, 2017. The provider is also known as Tianna Smith M.S., R.D..

Where is Tianna Nilsen located?

Tianna Nilsen practices at 29970 Technology Dr Ste 118, Murrieta, CA 92563. The listed phone number is (760) 716-1274.

What is Tianna Nilsen's specialty?

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

Is Tianna Nilsen enrolled in Medicare?

Yes. Tianna Nilsen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Tianna Nilsen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tianna Nilsen reassigns Medicare benefits to Temecula Dietitians, Inc. (Murrieta, 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 Tianna Nilsen'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 Tianna Nilsen was last updated on January 17, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.