Crystal Tsai, MS, RD
NPI 1003448838 · Registered Dietitian · Palo Alto, CA
Enrolled with Medicare as Practitioner - Registered Dietitian Or Nutrition Professional · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Tsai, MS, RD is a Registered Dietitian provider in Palo Alto, CA (NPI 1003448838).
Provider details
- NPI number
- 1003448838
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- MS, RD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Dietary & Nutritional Service Providers
- Pediatric Nutrition Registered Dietitian133VN1004X
Dietary & Nutritional Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 documented practice locations
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
Additional practice locations (2)
- 747 52nd StOakland, CA 94609-1809Phone: (510) 428-3885
- 106 La Casa Via Ste 100Walnut Creek, CA 94598-3084Phone: (925) 239-2900
Registry dates
- Enumerated
- 2020-02-10
- Last updated
- 2020-12-18
- Certified
- 2020-12-18
Frequently asked questions
- What is Crystal Tsai's NPI number?
- Crystal Tsai's National Provider Identifier (NPI) is 1003448838, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Tsai's specialty?
- Crystal Tsai is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Crystal Tsai located?
- Crystal Tsai's practice location on file with NPPES is 795 El Camino Real, Palo Alto, CA 94301-2302.
- What is Crystal Tsai's phone number?
- The practice phone number listed in the NPPES registry for Crystal Tsai is (650) 853-2961.
- Does Crystal Tsai accept Medicare?
- Crystal Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Tsai's NPI active?
- Yes — Crystal Tsai's NPI (1003448838) is active in the NPPES registry as of the last update on 2020-12-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.