IndividualActive
Tonia Liu
NPI 1073451811 · Internal Medicine Physician · Boston, MA
Tonia Liu is a Internal Medicine Physician provider in Boston, MA (NPI 1073451811).
Provider details
- NPI number
- 1073451811
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- 3020461 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
800 Washington St
Boston, MA 02111-1552
Phone: (617) 636-5000
Street-level locationGet directions
Mailing address
103 Ketterer Ct
Lawrence, NJ 08648-2855
Registry dates
- Enumerated
- 2026-03-23
- Last updated
- 2026-05-04
- Certified
- 2026-05-04
Frequently asked questions
- What is Tonia Liu's NPI number?
- Tonia Liu's National Provider Identifier (NPI) is 1073451811, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tonia Liu's specialty?
- Tonia Liu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tonia Liu located?
- Tonia Liu's practice location on file with NPPES is 800 Washington St, Boston, MA 02111-1552.
- What is Tonia Liu's phone number?
- The practice phone number listed in the NPPES registry for Tonia Liu is (617) 636-5000.
- Is Tonia Liu's NPI active?
- Yes — Tonia Liu's NPI (1073451811) is active in the NPPES registry as of the last update on 2026-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.