Siamak Abai, D.D.S., M.MED.SC.
Prosthodontics · Tustin, CA
Siamak Abai, D.D.S., M.MED.SC. is a prosthodontics with a practice address in Tustin, California, and NPI 1699923375, issued on Sep 5, 2008. Check the license (California 54930, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Siamak Abai
- Credential
- D.D.S., M.MED.SC.
- Primary taxonomy
- Prosthodontics 1223P0700X
- License number
- 54930 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1431 Warner Ave Ste E, Tustin, CA 92780
- Phone
- (949) 648-0303
- Enumerated
- Sep 5, 2008
- Entity
- Type 1 · individual
Verify Siamak Abai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 54930Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
99% more Medicare Part D claims than the average prosthodontics in 2024
179 Medicare Part D claims for 91 beneficiaries, against an average of 90 among the 1,620 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin85 claims
- Ibuprofen78 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: $84.36
1 payment, mostly food and beverage; the largest payer was Zimvie Inc.. The 1,268 providers of this specialty with any payment received $3,722.41 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.
Prosthodontics providers in California
There are 442 prosthodontics records in California.
Other prosthodontics records in California
- Tamer Abdel-Azim, DDSSan Francisco, CA1417263286
- Tarek Abdelhalim, DDS,MSC,FACPBeverly Hills, CA1922390079
- Abier Abdulwahab, DDSGardena, CA1083089668
- Loris Abedi, D.D.S.Glendale, CA1780834309
- Rishabh Acharya, BDS, MDSSan Francisco, CA1780239954
- Scott Adishian, D.D.S.Pasadena, CA1568553444
- Tae Jun Ahn, DDSTorrance, CA1558566943
- Ian Aires, DDSLa Jolla, CA1770639882
- Marc Alexander, BSC, DDSSanta Barbara, CA1275744807
- Veronica Alvarado, D.D.SDavis, CA1548582794
Common questions
What is Siamak Abai, D.D.S., M.MED.SC.'s NPI number?
Siamak Abai, D.D.S., M.MED.SC.'s National Provider Identifier (NPI) is 1699923375, issued on Sep 5, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Siamak Abai, D.D.S., M.MED.SC. located?
The NPPES record lists a practice address at 1431 Warner Ave Ste E, Tustin, CA, 92780. Phone: (949) 648-0303. Providers update this record themselves, so call before visiting.
How can I verify Siamak Abai, D.D.S., M.MED.SC.'s license?
NPPES lists California license number 54930, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Siamak Abai, D.D.S., M.MED.SC. prescribe under Medicare Part D?
In 2024, Siamak Abai, D.D.S., M.MED.SC. had 179 Medicare Part D claims for 91 beneficiaries; the average among prosthodontics prescribers was 90. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.