Siamak Heydarian, M.D.
Internal Medicine Physician · Woodbridge, VA
Siamak Heydarian, M.D. is an internal medicine physician with a practice address in Woodbridge, Virginia, and NPI 1225072077, issued on Jun 15, 2006. Check the license (Virginia 0101048248, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Siamak Heydarian
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101048248 VA
Self-reported in NPPES; status is on the state search - Practice location
- 2200 Opitz Blvd, Woodbridge, VA 22191
- Phone
- (703) 497-6700
- Enumerated
- Jun 15, 2006
- Record last updated
- Jan 16, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (703) 497-6300
- Medicaid ID
- 5853451 VA
- Medicare enrollment
- Enrolled (PECOS I20120716000615); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 2200 Opitz Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Siamak Heydarian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101048248Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% more Medicare Part D claims than the average internal medicine physician in 2024
5,986 Medicare Part D claims for 355 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 18 claims were for opioids.
Most prescribed
- Atorvastatin Calcium512 claims
- Amlodipine Besylate461 claims
- Rosuvastatin Calcium262 claims
- Metoprolol Succinate192 claims
- Levothyroxine Sodium186 claims
- Hydralazine Hcl180 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: $1,196.21
50 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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.
Siamak Heydarian among 3,599 internal medicine physician records in Virginia
Siamak Heydarian, 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
- Graduated1987 · median 2003 among the 2,234 with a school on file
- Record last updated2008 · 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).
61 internal medicine physician records list a practice address in Woodbridge
They are 61 of the 2,253 NPPES records with a practice address in Woodbridge, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Woodbridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Fardin Akrami Khasraghi, M.D.Woodbridge, VA 221911932155421
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- Baryalay Ameree, MDWoodbridge, VA 221911831112283
- James Hollis, M.D.Woodbridge, VA 221911710092721
- Nizar Hussain, MDWoodbridge, VA 221911023008976
- Atul Kapadia, M.D.Woodbridge, VA 221911619986940
- Tara Khoshnaw, MDWoodbridge, VA 221911962605964
- Heeshin Kim, M.D.Woodbridge, VA 221911649288952
Common questions
What is Siamak Heydarian, M.D.'s NPI number?
Siamak Heydarian, M.D.'s National Provider Identifier (NPI) is 1225072077, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Siamak Heydarian, M.D. located?
The NPPES record lists a practice address at 2200 Opitz Blvd, Woodbridge, VA, 22191. Phone: (703) 497-6700. Providers update this record themselves, so call before visiting.
How can I verify Siamak Heydarian, M.D.'s license?
NPPES lists Virginia license number 0101048248, 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 Siamak Heydarian, M.D. prescribe under Medicare Part D?
In 2024, Siamak Heydarian, M.D. had 5,986 Medicare Part D claims for 355 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.