Hessam S. Siavash, DDS, MD
Oral and Maxillofacial Surgery (Dentist) · Ventura, CA
Hessam S. Siavash, DDS, MD is an oral and maxillofacial surgery (dentist) with a practice address in Ventura, California, and NPI 1316080450, issued on Feb 15, 2007. Check the license (California 59781, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hessam S. Siavash
- Credential
- DDS, MD
- Primary taxonomy
- Oral and Maxillofacial Surgery (Dentist) 1223S0112X
- License numbers
- 59781 CA
A124710 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5200 Telegraph RD Ste B, Ventura, CA 93003
- Phone
- (805) 648-5121
- Enumerated
- Feb 15, 2007
- Record last updated
- Apr 20, 2017 (not updated in 9 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest oral and maxillofacial surgery (dentist) records → All 987 in California → Look up another NPI →
Also registered at 5200 Telegraph RD Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hooman Zarrinkelk, DDSOral and Maxillofacial Surgery (Dentist)1740304534
Verify Hessam S. Siavash in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 59781Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average oral and maxillofacial surgery (dentist) in 2024
233 Medicare Part D claims for 135 beneficiaries, against an average of 406 among the 5,870 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 73 claims were for opioids.
Most prescribed
- Cephalexin108 claims
- Hydrocodone-Acetaminophen56 claims
- Ibuprofen15 claims
- Acetaminophen-Codeine11 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: $599.88
5 payments; by number, the most common kind was entertainment; the largest payer was Keystone Dental Inc. The 4,075 providers of this specialty with any payment received $1,077.58 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.
Hessam S. Siavash among 987 oral and maxillofacial surgery (dentist) records in California
Hessam S. Siavash, DDS, MD is one of 987 oral and maxillofacial surgery (dentist) records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 34% of them.
- NPI issued2007 · 34% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2017 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223S0112X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Oral and Maxillofacial Surgery (Dentist) providers in California
There are 987 oral and maxillofacial surgery (dentist) records in California.
All 987 in California → Every provider in Ventura → Oral and Maxillofacial Surgery (Dentist) nationwide →
The 8 oral and maxillofacial surgery (dentist) records with the nearest ZIP codes
- Paul Bohman, DDSVentura, CA 930031336271170
- William Ferguson, D.D.S.Ventura, CA 930031588658413
- James Jacobs, DDS, MSVentura, CA 930031821207416
- John Jeppesen, DMDVentura, CA 930031952394421
- Hooman Zarrinkelk, DDSVentura, CA 930031740304534
- Reynaldo Rivera, MD, DDSCamarillo, CA 930101790902989
- Brijesh Patel, M.D., D.D.SMoorpark, CA 930211497843403
- Neal FreemanOjai, CA 930231356452304
Common questions
What is Hessam S. Siavash, DDS, MD's NPI number?
Hessam S. Siavash, DDS, MD's National Provider Identifier (NPI) is 1316080450, issued on Feb 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Hessam S. Siavash, DDS, MD located?
The NPPES record lists a practice address at 5200 Telegraph RD Ste B, Ventura, CA, 93003. Phone: (805) 648-5121. Providers update this record themselves, so call before visiting.
How can I verify Hessam S. Siavash, DDS, MD's license?
NPPES lists California license number 59781, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Hessam S. Siavash, DDS, MD prescribe under Medicare Part D?
In 2024, Hessam S. Siavash, DDS, MD had 233 Medicare Part D claims for 135 beneficiaries; the average among oral and maxillofacial surgery (dentist) prescribers was 406. 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.