G. Thomas Sirinian, DDS
Periodontics · Encinitas, CA
G. Thomas Sirinian, DDS is a periodontics with a practice address in Encinitas, California, and NPI 1013150648, issued on Apr 13, 2009. Check the license (California 44261, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- G. Thomas Sirinian
- Credential
- DDS
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 44261 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1011 Devonshire Drive, Encinitas, CA 92024
- Phone
- (858) 755-5168
- Enumerated
- Apr 13, 2009
- Record last updated
- Nov 24, 2025
- Fax
- (858) 755-2265
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Also registered at 1011 Devonshire Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bassam Sinno, MDPsychiatry Physician1982767893
Verify G. Thomas Sirinian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 44261Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average periodontics in 2024
340 Medicare Part D claims for 141 beneficiaries, against an average of 277 among the 4,191 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 88 claims were for opioids.
Most prescribed
- Amoxicillin153 claims
- Oxycodone-Acetaminophen55 claims
- Chlorhexidine Gluconate37 claims
- Ibuprofen33 claims
- Hydrocodone-Acetaminophen22 claims
- Clindamycin Hcl15 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.
G. Thomas Sirinian among 929 periodontics records in California
G. Thomas Sirinian, 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. Its NPI, issued in 2009, is newer than 67% of them.
- NPI issued2009 · 67% of these records are older, 30% 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 updated2025 · 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 Encinitas → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Ann Kania, DDS, DMSCEncinitas, CA 920241063545416
- Daniel Roberts, DDSEncinitas, CA 920241558490045
- Michael Yokoyama, D.D.S.Encinitas, CA 920241669568325
- Bradley Bourcy, D.D.S., M.S.Escondido, CA 920251841213253
- Ryan Harbertson, D.D.S.Escondido, CA 920251073765053
- Tin Luong, D.D.S.Escondido, CA 920251396030524
- David Tagge, D.D.S., M.S.D.Escondido, CA 920251508880840
- Alireza Haeri, D.M.D, M.H.S.El Cajon, CA 920201609098490
Common questions
What is G. Thomas Sirinian, DDS's NPI number?
G. Thomas Sirinian, DDS's National Provider Identifier (NPI) is 1013150648, issued on Apr 13, 2009. An NPI identifies a provider in billing; it is not a license.
Where is G. Thomas Sirinian, DDS located?
The NPPES record lists a practice address at 1011 Devonshire Drive, Encinitas, CA, 92024. Phone: (858) 755-5168. Providers update this record themselves, so call before visiting.
How can I verify G. Thomas Sirinian, DDS's license?
NPPES lists California license number 44261, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does G. Thomas Sirinian, DDS prescribe under Medicare Part D?
In 2024, G. Thomas Sirinian, DDS had 340 Medicare Part D claims for 141 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.