IndividualActive
Marianna Tong
NPI 1649825019 · Registered Dietitian · Oakland, CA
Marianna Tong is a Registered Dietitian provider in Oakland, CA (NPI 1649825019).
Provider details
- NPI number
- 1649825019
- Entity type
- Individual
- Primary specialty
- Registered DietitianDietary & Nutritional Service Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Dietary & Nutritional Service Providers
Profile Score
Established profile(59/100 index)
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
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
3600 Broadway # G
Oakland, CA 94611-5730
Phone: (510) 752-1000
Street-level locationGet directions
Mailing address
1938 15th Ave
San Francisco, CA 94116-1312
Registry dates
- Enumerated
- 2019-08-02
- Last updated
- 2021-11-22
- Certified
- 2021-11-22
Frequently asked questions
- What is Marianna Tong's NPI number?
- Marianna Tong's National Provider Identifier (NPI) is 1649825019, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianna Tong's specialty?
- Marianna Tong is listed in the NPPES registry with a primary specialty of Registered Dietitian (Dietary & Nutritional Service Providers).
- Where is Marianna Tong located?
- Marianna Tong's practice location on file with NPPES is 3600 Broadway # G, Oakland, CA 94611-5730.
- What is Marianna Tong's phone number?
- The practice phone number listed in the NPPES registry for Marianna Tong is (510) 752-1000.
- Is Marianna Tong's NPI active?
- Yes — Marianna Tong's NPI (1649825019) is active in the NPPES registry as of the last update on 2021-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.