IndividualActive
Madeleine Holloway-Tjan, RD
NPI 1144892001 · Registered Dietitian · San Ramon, CA
Madeleine Holloway-Tjan, RD is a Registered Dietitian provider in San Ramon, CA (NPI 1144892001).
Provider details
- NPI number
- 1144892001
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Credential
- RD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Established profile(56/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
83% 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
118 Mills Pl
San Ramon, CA 94583-3426
Phone: (925) 785-9701
Street-level locationGet directions
Mailing address
118 Mills Pl
San Ramon, CA 94583-3426
Registry dates
- Enumerated
- 2021-07-12
- Last updated
- 2021-07-12
- Certified
- 2021-07-12
Frequently asked questions
- What is Madeleine Holloway-Tjan's NPI number?
- Madeleine Holloway-Tjan's National Provider Identifier (NPI) is 1144892001, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Madeleine Holloway-Tjan's specialty?
- Madeleine Holloway-Tjan is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Madeleine Holloway-Tjan located?
- Madeleine Holloway-Tjan's practice location on file with NPPES is 118 Mills Pl, San Ramon, CA 94583-3426.
- What is Madeleine Holloway-Tjan's phone number?
- The practice phone number listed in the NPPES registry for Madeleine Holloway-Tjan is (925) 785-9701.
- Is Madeleine Holloway-Tjan's NPI active?
- Yes — Madeleine Holloway-Tjan's NPI (1144892001) is active in the NPPES registry as of the last update on 2021-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.