Siavash C. Sobhani, M.D.
Internal Medicine Physician · Fairfax, VA
Siavash C. Sobhani, M.D. is an internal medicine physician with a practice address in Fairfax, Virginia, and NPI 1790872455, issued on Oct 6, 2006. Check the license (Virginia 0101050949, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Siavash C. Sobhani
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101050949 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3650 Joseph Siewick Dr, Fairfax, VA 22033
- Phone
- (703) 716-2866
- Enumerated
- Oct 6, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (703) 716-2868
- Medicaid ID
- 5800846 VA
- Medicare enrollment
- Enrolled (PECOS I20090421000273); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1990
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 3650 Joseph Siewick Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Siavash C. Sobhani in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101050949Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,272 Medicare Part D claims for 94 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium103 claims
- Rosuvastatin Calcium73 claims
- Levothyroxine Sodium57 claims
- Azithromycin55 claims
- Olmesartan Medoxomil45 claims
- Amlodipine Besylate42 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: $786.77
38 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Siavash C. Sobhani among 3,599 internal medicine physician records in Virginia
Siavash C. Sobhani, M.D. is one of 3,599 internal medicine physician records with a practice address in Virginia. 77% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1990 · median 2003 among the 2,234 with a school on file
- Record last updated2007 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
108 internal medicine physician records list a practice address in Fairfax
They are 108 of the 6,584 NPPES records with a practice address in Fairfax, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Fairfax → Internal Medicine Physician nationwide →
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Common questions
What is Siavash C. Sobhani, M.D.'s NPI number?
Siavash C. Sobhani, M.D.'s National Provider Identifier (NPI) is 1790872455, issued on Oct 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Siavash C. Sobhani, M.D. located?
The NPPES record lists a practice address at 3650 Joseph Siewick Dr, Fairfax, VA, 22033. Phone: (703) 716-2866. Providers update this record themselves, so call before visiting.
How can I verify Siavash C. Sobhani, M.D.'s license?
NPPES lists Virginia license number 0101050949, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Siavash C. Sobhani, M.D. prescribe under Medicare Part D?
In 2024, Siavash C. Sobhani, M.D. had 1,272 Medicare Part D claims for 94 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.