Tom S. Chien, MD
Emergency Medicine Physician · Arlington, VA
Tom S. Chien, MD is an emergency medicine physician with a practice address in Arlington, Virginia, and NPI 1225205131, issued on May 9, 2008. Check the license (Virginia 0101242208, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Tom S. Chien
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 0101242208 VA
Self-reported in NPPES; status is on the state search - Practice location
- 4501 Arlington Blvd #315, Arlington, VA 22203
- Phone
- (202) 262-1485
- Enumerated
- May 9, 2008
- Record last updated
- Feb 11, 2022
- Medicare enrollment
- Enrolled (PECOS I20100408000073); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 2005
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,715 in Virginia → Look up another NPI →
Verify Tom S. Chien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101242208Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% more Medicare Part D claims than the average emergency medicine physician in 2024
402 Medicare Part D claims for 249 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 44 claims were for opioids.
Most prescribed
- Oxycodone Hcl37 claims
- Famotidine31 claims
- Ondansetron Odt31 claims
- Prednisone31 claims
- Cefpodoxime Proxetil25 claims
- Ibuprofen25 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.
Bills Medicare through one group practice
- Permanente Medical Group IncSouth San Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tom S. Chien among 1,715 emergency medicine physician records in Virginia
Tom S. Chien, MD is one of 1,715 emergency medicine physician records with a practice address in Virginia. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 49% of them.
- NPI issued2008 · 49% of these records are older, 46% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2005 · median 2011 among the 956 with a school on file
- Record last updated2022 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Virginia
There are 1,715 emergency medicine physician records in Virginia.
All 1,715 in Virginia → Every provider in Arlington → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Celeste Szewczyk, M.D.Arlington, VA 222031467569202
- Alexon Munson-Catt, MDArlington, VA 222021255081204
- Allyson Bloom, MDArlington, VA 222051417980194
- Wendy Bloom, M.D.Arlington, VA 222051659561769
- Kevin Campbell, MDArlington, VA 222051104894815
- Hannah Carter, M.D.Arlington, VA 222011831621812
- Michelle Divito, MDArlington, VA 222051114916632
- Peter Liu, MDArlington, VA 222051407835853
Common questions
What is Tom S. Chien, MD's NPI number?
Tom S. Chien, MD's National Provider Identifier (NPI) is 1225205131, issued on May 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Tom S. Chien, MD located?
The NPPES record lists a practice address at 4501 Arlington Blvd #315, Arlington, VA, 22203. Phone: (202) 262-1485. Providers update this record themselves, so call before visiting.
How can I verify Tom S. Chien, MD's license?
NPPES lists Virginia license number 0101242208, 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 Tom S. Chien, MD prescribe under Medicare Part D?
In 2024, Tom S. Chien, MD had 402 Medicare Part D claims for 249 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.