Tom Chien, MD
NPI 1225205131 · Emergency Medicine Physician · Arlington, VA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tom Chien, MD is a Emergency Medicine Physician provider in Arlington, VA (NPI 1225205131).
Provider details
- NPI number
- 1225205131
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 0101242208 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
27 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 27 | $185 |
Typical Medicare-allowed amounts for these services range $185–$185 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 37 | 37 |
| Famotidine | 31 | 31 |
| Ondansetronbrand: Ondansetron Odt | 31 | 31 |
| Prednisone | 31 | 31 |
| Cefpodoxime Proxetil | 25 | 25 |
| Ibuprofen | 25 | 25 |
| Sucralfate | 19 | 19 |
| Cephalexin | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-09
- Last updated
- 2022-02-11
Frequently asked questions
- What is Tom Chien's NPI number?
- Tom Chien's National Provider Identifier (NPI) is 1225205131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tom Chien's specialty?
- Tom Chien is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tom Chien located?
- Tom Chien's practice location on file with NPPES is 4501 Arlington Blvd #315, Arlington, VA 22203.
- What is Tom Chien's phone number?
- The practice phone number listed in the NPPES registry for Tom Chien is (202) 262-1485.
- Does Tom Chien accept Medicare?
- Tom Chien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tom Chien's NPI active?
- Yes — Tom Chien's NPI (1225205131) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.