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TONIA LIU
NPI 1073451811
Internal Medicine in Boston, MA

Active since March 23, 2026PECOS Enrolled
800 WASHINGTON ST, BOSTON, MA 02111(617) 636-5000 Get Directions Write a Review

NPPES record last updated: May 4, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 4, 2026, Mar 23, 2026 (2 updates tracked since 2026).

About Tonia Liu NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TONIA LIU (NPI 1073451811) is an individual internal medicine provider in Boston, Massachusetts, licensed in Massachusetts (3020461) and active in the NPI registry since March 2026. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1073451811
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameTONIA LIU
Location Address800 WASHINGTON STBoston, MA 02111-1552
Mailing Address103 Ketterer CtLawrence, NJ 08648-2855
Phone(617) 636-5000
Sole ProprietorNo
Enumeration DateMarch 23, 2026
Last NPPES UpdateMay 4, 20262 updates tracked since enumeration
NPPES CertifiedMay 4, 2026
✔ NPI 1073451811 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MA · 3020461
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
800 WASHINGTON ST, Boston, MA 02111
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tonia Liu is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02111 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AARON DICKSTEIN M.D.
Internal Medicine (Gastroenterology)
800 WASHINGTON ST, BOX 233
BOSTON, MA 02111
Suffolk County (617) 636-5883
THOMAS E BIGELOW
Technician/Technologist (Optician)
800 WASHINGTON ST, BOX 450
BOSTON, MA 02111
Suffolk County (617) 636-5857
SARAH MERRIMAN PERSING M.D.
Plastic Surgery
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5000
DR. SHARANYA MOHANTY M.D.
Internal Medicine
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5000
AFRAH SADIQ SAIT MOHAMMED M.D.
Internal Medicine (Infectious Disease)
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (718) 629-7204
ADNAN SALIM QAMAR MD
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-5829
ALICIA SIGIA WU MD
Psychiatry & Neurology (Psychiatry)
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-1619
ZEANAARONEVAN ANDRES LUNA
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST
BOSTON, MA 02111
Suffolk County (617) 636-8100

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tonia Liu's NPI number?

The NPI number for Tonia Liu is 1073451811. It was assigned to this individual provider in the NPPES registry on March 23, 2026.

Where is Tonia Liu located?

Tonia Liu practices at 800 Washington St, Boston, MA 02111. The listed phone number is (617) 636-5000.

What is Tonia Liu's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Tonia Liu enrolled in Medicare?

Yes. Tonia Liu is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Tonia Liu was last updated on May 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.