Tianna Nilsen, M.S., R.D.
NPI 1558895383 · Registered Dietitian · Murrieta, CA
Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tianna Nilsen, M.S., R.D. is a Registered Dietitian provider in Murrieta, CA (NPI 1558895383).
Provider details
- NPI number
- 1558895383
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- M.S., R.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 1069733 (CA)
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
120 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Therapy Procedure Reassessment for Nutrition Management, Each 15 Minutes97803 | 72 | $28 |
| Therapy Procedure for Nutrition Management, Each 15 Minutes97802 | 48 | $32 |
Typical Medicare-allowed amounts for these services range $28–$32 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-04-19
- Last updated
- 2024-01-17
- Certified
- 2024-01-17
Frequently asked questions
- What is Tianna Nilsen's NPI number?
- Tianna Nilsen's National Provider Identifier (NPI) is 1558895383, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tianna Nilsen's specialty?
- Tianna Nilsen is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Tianna Nilsen located?
- Tianna Nilsen's practice location on file with NPPES is 29970 Technology Dr Ste 118, Murrieta, CA 92563-2647.
- What is Tianna Nilsen's phone number?
- The practice phone number listed in the NPPES registry for Tianna Nilsen is (760) 716-1274.
- Does Tianna Nilsen accept Medicare?
- Tianna Nilsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tianna Nilsen's NPI active?
- Yes — Tianna Nilsen's NPI (1558895383) is active in the NPPES registry as of the last update on 2024-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.