Jonathan Flanzbaum, MD
NPI 1689624025 · Pediatrics Physician · Dublin, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Flanzbaum, MD is a Pediatrics Physician provider in Dublin, CA (NPI 1689624025).
Provider details
- NPI number
- 1689624025
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G64414 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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 (1)
- 3200 Kearney StreetFremont, CA 94538-2299Phone: (510) 490-1222
Registry dates
- Enumerated
- 2006-05-10
- Last updated
- 2020-05-28
- Certified
- 2020-05-28
Frequently asked questions
- What is Jonathan Flanzbaum's NPI number?
- Jonathan Flanzbaum's National Provider Identifier (NPI) is 1689624025, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Flanzbaum's specialty?
- Jonathan Flanzbaum is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Flanzbaum located?
- Jonathan Flanzbaum's practice location on file with NPPES is 4050 Dublin Blvd, Dublin, CA 94568-3112.
- What is Jonathan Flanzbaum's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Flanzbaum is (925) 875-6485.
- Does Jonathan Flanzbaum accept Medicare?
- Jonathan Flanzbaum is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Flanzbaum's NPI active?
- Yes — Jonathan Flanzbaum's NPI (1689624025) is active in the NPPES registry as of the last update on 2020-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.