Irene Tien, MD
NPI 1649220955 · Emergency Medicine Physician · Boston, MA
Irene Tien, MD is a Emergency Medicine Physician provider in Boston, MA (NPI 1649220955).
Provider details
- NPI number
- 1649220955
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- License
- 159223 (MA)
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 tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-10
- Last updated
- 2025-09-11
Frequently asked questions
- What is Irene Tien's NPI number?
- Irene Tien's National Provider Identifier (NPI) is 1649220955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irene Tien's specialty?
- Irene Tien is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Irene Tien located?
- Irene Tien's practice location on file with NPPES is 91 E Concord St, Boston, MA 02118-2644.
- What is Irene Tien's phone number?
- The practice phone number listed in the NPPES registry for Irene Tien is (617) 414-4397.
- Is Irene Tien's NPI active?
- Yes — Irene Tien's NPI (1649220955) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.