Kei Ouchi, MD, MPH
NPI 1346559630 · Emergency Medicine Physician · Boston, MA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kei Ouchi, MD, MPH is a Emergency Medicine Physician provider in Boston, MA (NPI 1346559630).
Provider details
- NPI number
- 1346559630
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Male
- Sole proprietor
- No
- License
- 258871 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 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
292 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 | 119 | $178 |
| Critical Care, First 30-74 Minutes99291 | 55 | $219 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 34 | $180 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 34 | $124 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 21 | $120 |
| Ultrasound of Heart, Follow-Up93308 | 17 | $26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-10-04
- Last updated
- 2021-11-18
- Certified
- 2021-11-18
Frequently asked questions
- What is Kei Ouchi's NPI number?
- Kei Ouchi's National Provider Identifier (NPI) is 1346559630, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kei Ouchi's specialty?
- Kei Ouchi is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kei Ouchi located?
- Kei Ouchi's practice location on file with NPPES is 75 Francis St, Boston, MA 02115-6110.
- What is Kei Ouchi's phone number?
- The practice phone number listed in the NPPES registry for Kei Ouchi is (617) 732-5640.
- Does Kei Ouchi accept Medicare?
- Kei Ouchi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kei Ouchi's NPI active?
- Yes — Kei Ouchi's NPI (1346559630) is active in the NPPES registry as of the last update on 2021-11-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.