Ronaldo E. Fermin, D.M.D
General Practice Dentistry · South San Francisco, CA
Ronaldo E. Fermin, D.M.D is a general practice dentistry with a practice address in South San Francisco, California, and NPI 1821022898, issued on Jul 10, 2006. Check the license (California 35880, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ronaldo E. Fermin
- Credential
- D.M.D
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 35880 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2400 Westborough Blvd Ste 104, South San Francisco, CA 94080
- Phone
- (650) 878-1033
- Enumerated
- Jul 10, 2006
- Record last updated
- Jul 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (650) 878-1031
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 17,852 in California → Look up another NPI →
Also registered at 2400 Westborough Blvd Ste 104
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alicia Fermin, D.M.D.General Practice Dentistry1912931981
Verify Ronaldo E. Fermin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 35880Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $20.89
1 payment: food and beverage; the largest payer was Solventum Corporation. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ronaldo E. Fermin among 17,852 general practice dentistry records in California
Ronaldo E. Fermin, D.M.D is one of 17,852 general practice dentistry records with a practice address in California. 57% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 57% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2020 · 79% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 general practice dentistry records list a practice address in South San Francisco
They are 42 of the 1,173 NPPES records with a practice address in South San Francisco, and 17,852 general practice dentistry records in California.
All 17,852 in California → Every provider in South San Francisco → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Barbara Jean Betita, D.D.S.South San Francisco, CA 940801962577825
- Jean Chu, D.D.S.South San Francisco, CA 940801689636839
- John Dell, D.D.S.South San Francisco, CA 940801376541706
- Tina Donahue, DDSSouth San Francisco, CA 940801285725978
- Alicia Fermin, D.M.D.South San Francisco, CA 940801912931981
- Wayne Joseph, DDSSouth San Francisco, CA 940801538242409
- Judith Liao, DDSSouth San Francisco, CA 940801821188699
- Randall Louie, DDSSouth San Francisco, CA 940801407920119
Common questions
What is Ronaldo E. Fermin, D.M.D's NPI number?
Ronaldo E. Fermin, D.M.D's National Provider Identifier (NPI) is 1821022898, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronaldo E. Fermin, D.M.D located?
The NPPES record lists a practice address at 2400 Westborough Blvd Ste 104, South San Francisco, CA, 94080. Phone: (650) 878-1033. Providers update this record themselves, so call before visiting.
How can I verify Ronaldo E. Fermin, D.M.D's license?
NPPES lists California license number 35880, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.