Tatiana Sierra, COTA/L
NPI 1265139026 · Occupational Therapy Assistant · Phoenix, AZ
Tatiana Sierra, COTA/L is a Occupational Therapy Assistant provider in Phoenix, AZ (NPI 1265139026).
Provider details
- NPI number
- 1265139026
- Entity type
- Individual
- Primary specialty
- Occupational Therapy AssistantRespiratory, Developmental, Rehabilitative and Restorative Service Providers
- Credential
- COTA/L
- Sex
- Female
- Sole proprietor
- No
- License
- OTA-047182 (AZ)
Specialties & taxonomies
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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
- 2023-02-13
- Last updated
- 2023-02-13
- Certified
- 2023-02-13
Frequently asked questions
- What is Tatiana Sierra's NPI number?
- Tatiana Sierra's National Provider Identifier (NPI) is 1265139026, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tatiana Sierra's specialty?
- Tatiana Sierra is listed in the NPPES registry with a primary specialty of Occupational Therapy Assistant (Respiratory, Developmental, Rehabilitative and Restorative Service Providers).
- Where is Tatiana Sierra located?
- Tatiana Sierra's practice location on file with NPPES is 10631 S 51st St Ste 1, Phoenix, AZ 85044-5225.
- What is Tatiana Sierra's phone number?
- The practice phone number listed in the NPPES registry for Tatiana Sierra is (480) 398-4280.
- Is Tatiana Sierra's NPI active?
- Yes — Tatiana Sierra's NPI (1265139026) is active in the NPPES registry as of the last update on 2023-02-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.