Cathleen Silliman, D.D.S.
Periodontics · San Diego, CA
Cathleen Silliman, D.D.S. is a periodontics with a practice address in San Diego, California, and NPI 1285650366, issued on Jul 14, 2006. Check the license (California 036698, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cathleen Silliman
- Credential
- D.D.S.
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 036698 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2322 6TH Ave FL 3, San Diego, CA 92101
- Phone
- (619) 238-2388
- Enumerated
- Jul 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (619) 238-2377
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Verify Cathleen Silliman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 036698Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average periodontics in 2024
113 Medicare Part D claims for 70 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin76 claims
- Cephalexin14 claims
- Doxycycline Hyclate11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $72.03
3 payments; by number, the most common kind was entertainment; the largest payer was Premier Dental Products Company. The 2,966 providers of this specialty with any payment received $1,338.41 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.
Cathleen Silliman among 929 periodontics records in California
Cathleen Silliman, D.D.S. 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. 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 · 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.
All 929 in California → Every provider in San Diego → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Roya Niakiani, DMDSan Diego, CA 921011902025976
- Bruce Abe, D.D.S.San Diego, CA 921031235104688
- Andrew Chapokas, DMDSan Diego, CA 921031235263278
- Eric Driver, DDSSan Diego, CA 921031497741672
- Jose-Julio Hernandez-Blouin, D.D.S.San Diego, CA 921031457893885
- Carson Hunt, DDSSan Diego, CA 921031104710755
- Robert Hymes, D.D.S.San Diego, CA 921031073715967
- Kennie Kwok, DMDSan Diego, CA 921031912269945
Common questions
What is Cathleen Silliman, D.D.S.'s NPI number?
Cathleen Silliman, D.D.S.'s National Provider Identifier (NPI) is 1285650366, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cathleen Silliman, D.D.S. located?
The NPPES record lists a practice address at 2322 6TH Ave FL 3, San Diego, CA, 92101. Phone: (619) 238-2388. Providers update this record themselves, so call before visiting.
How can I verify Cathleen Silliman, D.D.S.'s license?
NPPES lists California license number 036698, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Cathleen Silliman, D.D.S. prescribe under Medicare Part D?
In 2024, Cathleen Silliman, D.D.S. had 113 Medicare Part D claims for 70 beneficiaries; the average among periodontics prescribers was 277. Part D covers Medicare prescriptions 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.