Larry F. Madsen, DDS
Periodontics · San Leandro, CA
Larry F. Madsen, DDS is a periodontics with a practice address in San Leandro, California, and NPI 1689860579, issued on Sep 24, 2007. Check the license (California 22906, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Larry F. Madsen
- Credential
- DDS
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 22906 CA
Self-reported in NPPES; status is on the state search - Practice location
- 299 Juana Ave, San Leandro, CA 94577
- Phone
- (510) 352-2111
- Enumerated
- Sep 24, 2007
- Record last updated
- Sep 24, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Also registered at 299 Juana Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric Herbranson, D.D.S.Endodontics1407996242
- Stanley Ross, D.D.S.Periodontics1639225386
Verify Larry F. Madsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 22906Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Larry F. Madsen among 929 periodontics records in California
Larry F. Madsen, DDS is one of 929 periodontics records with a practice address in California. 69% 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 2007, is newer than 29% of them.
- NPI issued2007 · 29% of these records are older, 40% newer
- In a Medicare fileNo · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in California
There are 929 periodontics records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 929 in California → Every provider in San Leandro → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Karl Ching, D.D.S.San Leandro, CA 945771174669113
- Benjamin Halpern, D.D.S.San Leandro, CA 945771164978672
- Nathan Palanker, DDS, MSSan Leandro, CA 945771134623523
- Stanley Ross, D.D.S.San Leandro, CA 945771639225386
- Alice Tai, DDSSan Ramon, CA 945821760593933
- Janice Kaeley, DDS, MSDSan Ramon, CA 945831659616654
- Anisha Thondukolam, DDSSan Ramon, CA 945831609109768
- Philip Vassilopoulos, D.D.S., D.M.D.San Ramon, CA 945831538382569
Common questions
What is Larry F. Madsen, DDS's NPI number?
Larry F. Madsen, DDS's National Provider Identifier (NPI) is 1689860579, issued on Sep 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Larry F. Madsen, DDS located?
The NPPES record lists a practice address at 299 Juana Ave, San Leandro, CA, 94577. Phone: (510) 352-2111. Providers update this record themselves, so call before visiting.
How can I verify Larry F. Madsen, DDS's license?
NPPES lists California license number 22906, 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. 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.