Sonja Foo, MBBS
NPI 1225680135 · Emergency Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sonja Foo, MBBS is a Emergency Medicine Physician provider in Boston, MA (NPI 1225680135).
Provider details
- NPI number
- 1225680135
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MBBS
- Sex
- Female
- Sole proprietor
- No
- License
- 0116032536 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
321 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 | 183 | $179 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 47 | $181 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 34 | $123 |
| Ultrasound of Heart, Follow-Up93308 | 17 | $26 |
| Critical Care, First 30-74 Minutes99291 | 15 | $220 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 14 |
Practice location
Mailing address
Additional practice locations (1)
- 1215 Lee StCharlottesville, VA 22908-0816Phone: (434) 924-8485Fax: (434) 982-4118
Registry dates
- Enumerated
- 2019-07-11
- Last updated
- 2022-11-03
- Certified
- 2022-11-03
Frequently asked questions
- What is Sonja Foo's NPI number?
- Sonja Foo's National Provider Identifier (NPI) is 1225680135, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonja Foo's specialty?
- Sonja Foo is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sonja Foo located?
- Sonja Foo's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Sonja Foo's phone number?
- The practice phone number listed in the NPPES registry for Sonja Foo is (617) 732-5500.
- Does Sonja Foo accept Medicare?
- Sonja Foo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sonja Foo's NPI active?
- Yes — Sonja Foo's NPI (1225680135) is active in the NPPES registry as of the last update on 2022-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.