Tammy Sims, M. D.
NPI 1043490246 · Specialist · Riverside, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tammy Sims, M. D. is a Specialist provider in Riverside, CA (NPI 1043490246).
Provider details
- NPI number
- 1043490246
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M. D.
- Sex
- Female
- Sole proprietor
- No
- License
- 16949 (MS)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-11-06
- Last updated
- 2024-12-30
- Certified
- 2023-01-23
Frequently asked questions
- What is Tammy Sims's NPI number?
- Tammy Sims's National Provider Identifier (NPI) is 1043490246, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tammy Sims's specialty?
- Tammy Sims is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Tammy Sims located?
- Tammy Sims's practice location on file with NPPES is 3390 University Ave Ste 100, Riverside, CA 92501-3315.
- What is Tammy Sims's phone number?
- The practice phone number listed in the NPPES registry for Tammy Sims is (844) 827-8000.
- Does Tammy Sims accept Medicare?
- Tammy Sims is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tammy Sims's NPI active?
- Yes — Tammy Sims's NPI (1043490246) is active in the NPPES registry as of the last update on 2024-12-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.