Yun-Yun Chen, M.D.
NPI 1366898801 · Anesthesiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Yun-Yun Chen, M.D. is a Anesthesiology Physician provider in Boston, MA (NPI 1366898801).
Provider details
- NPI number
- 1366898801
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- P32556 (MD)
Specialties & taxonomies
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
10 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
106 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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 75 | $51 |
| Daily Hospital Management of Continuous Spinal Drug Administration01996 | 18 | $65 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 13 | $86 |
Typical Medicare-allowed amounts for these services range $51–$86 (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.
Practice location
Mailing address
Additional practice locations (1)
- 2401 W Belvedere AveBaltimore, MD 21215-5216Phone: (410) 601-9386
Registry dates
- Enumerated
- 2016-05-13
- Last updated
- 2018-03-17
Frequently asked questions
- What is Yun-Yun Chen's NPI number?
- Yun-Yun Chen's National Provider Identifier (NPI) is 1366898801, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yun-Yun Chen's specialty?
- Yun-Yun Chen is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Yun-Yun Chen located?
- Yun-Yun Chen's practice location on file with NPPES is 75 Francis St # Streetl1, Boston, MA 02115-6110.
- What is Yun-Yun Chen's phone number?
- The practice phone number listed in the NPPES registry for Yun-Yun Chen is (617) 732-8210.
- Does Yun-Yun Chen accept Medicare?
- Yun-Yun Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Yun-Yun Chen's NPI active?
- Yes — Yun-Yun Chen's NPI (1366898801) is active in the NPPES registry as of the last update on 2018-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.