Siamak Sy Majidi, DDS
Pediatric Dentistry · Washington, DC
Siamak Sy Majidi, DDS is a pediatric dentistry with a practice address in Washington, District of Columbia, and NPI 1003041328, issued on May 17, 2009. Check the license (District of Columbia DEN1000816, as entered in NPPES) with the District of Columbia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Siamak Sy Majidi
- Credential
- DDS
- Primary taxonomy
- Pediatric Dentistry 1223P0221X
- License numbers
- DEN1000816 DC
14345 MD
0401412530 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3239 N St NW Apt 12, Washington, DC 20007
- Phone
- (240) 418-6103
- Enumerated
- May 17, 2009
- Record last updated
- Jan 28, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 023907100 MD
- Entity
- Type 1 · individual
8 nearest pediatric dentistry records → All 41 in District of Columbia → Look up another NPI →
Verify Siamak Sy Majidi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich District of Columbia board licenses this profession
Search for license DEN1000816Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $44.75
2 payments; by number, the most common kind was education; the largest payer was Colgate Oral Pharmaceuticals, Inc. The 2,607 providers of this specialty with any payment received $434.77 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 Sy Majidi among 41 pediatric dentistry records in District of Columbia
Siamak Sy Majidi, DDS is one of 41 pediatric dentistry records with a practice address in District of Columbia. 24% 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 59% of them.
- NPI issued2009 · 59% of these records are older, 37% newer
- In a Medicare fileYes · 24% of these records are
- In the CMS Doctors and Clinicians fileNo · 2% of these records are
- Record last updated2016 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0221X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Dentistry providers in District of Columbia
There are 41 pediatric dentistry records in District of Columbia.
All 41 in District of Columbia → Every provider in Washington → Pediatric Dentistry nationwide →
The 8 pediatric dentistry records with the nearest ZIP codes
- George Thomas, D.D.S.Washington, DC 200081124248745
- Latoya Barham, DDSWashington, DC 200091508955378
- Gia Duong, DMDWashington, DC 200051376078493
- Arthur Bernard Jones, DDSWashington, DC 200101407920499
- Lydia Chiu, DMD, MPHWashington, DC 200101639657935
- Linda Hallman, DDSWashington, DC 200101316024318
- Kenneth KeyesWashington, DC 200101083791081
- Marla Kush Prokop, DMDWashington, DC 200101386715738
Common questions
What is Siamak Sy Majidi, DDS's NPI number?
Siamak Sy Majidi, DDS's National Provider Identifier (NPI) is 1003041328, issued on May 17, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Siamak Sy Majidi, DDS located?
The NPPES record lists a practice address at 3239 N St NW Apt 12, Washington, DC, 20007. Phone: (240) 418-6103. Providers update this record themselves, so call before visiting.
How can I verify Siamak Sy Majidi, DDS's license?
NPPES lists District of Columbia license number DEN1000816, as entered by the provider. Search the District of Columbia board that licenses this profession; the NPPES record confirms identity 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.