Jonathan Mark Flanzbaum, MD
Pediatrics Physician · Dublin, CA
Jonathan Mark Flanzbaum, MD is a pediatrics physician with a practice address in Dublin, California, and NPI 1689624025, issued on May 10, 2006. Check the license (California G64414, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Jonathan Mark Flanzbaum
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- G64414 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4050 Dublin Blvd, Dublin, CA 94568
- Phone
- (925) 875-6485
- Enumerated
- May 10, 2006
- Record last updated
- May 28, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Also registered at 4050 Dublin Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mimi Akaba, FNPNurse Practitioner1851472021
- Sana Ali, D.O.Family Medicine Physician1396199550
- Samira Aliabadi, MDPediatrics Physician1508957887
- Elizabeth Ancheta, MDPediatrics Physician1801933775
- Amardeep Angroola, M.D.Hospitalist Physician1821253568
- Carla Antypas, DOFamily Medicine Physician1063096113
Verify Jonathan Mark Flanzbaum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G64414Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Jonathan Mark Flanzbaum among 9,272 pediatrics physician records in California
Jonathan Mark Flanzbaum, MD is one of 9,272 pediatrics physician records with a practice address in California. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 56% newer
- In a Medicare fileNo · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2020 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 pediatrics physician records list a practice address in Dublin
They are 32 of the 2,148 NPPES records with a practice address in Dublin, and 9,272 pediatrics physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 9,272 in California → Every provider in Dublin → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Samira Aliabadi, MDDublin, CA 945681508957887
- Elizabeth Ancheta, MDDublin, CA 945681801933775
- Suszanne Bernat, M.D.Dublin, CA 945681912018953
- Jessica Cha, MDDublin, CA 945681609035906
- Kimberly Chong, MDDublin, CA 945681003094434
- Amy Chow, MDDublin, CA 945681417144692
- Dong-Chune Chung, M.D.Dublin, CA 945681225059629
- Barbara Denianke, M.D.Dublin, CA 945681659340685
Common questions
What is Jonathan Mark Flanzbaum, MD's NPI number?
Jonathan Mark Flanzbaum, MD's National Provider Identifier (NPI) is 1689624025, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Mark Flanzbaum, MD located?
The NPPES record lists a practice address at 4050 Dublin Blvd, Dublin, CA, 94568. Phone: (925) 875-6485. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Mark Flanzbaum, MD's license?
NPPES lists California license number G64414, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.