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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LIA KIMIKO METZGER MD
NPI 1043898596
Anesthesiology - Critical Care Medicine in Boston, MA

Active since March 29, 2021PECOS Enrolled
75 FRANCIS ST, BOSTON, MA 02115(617) 732-8210 Get Directions Write a Review

NPPES record last updated: October 7, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Oct 7, 2026, Jun 2, 2025, Mar 29, 2021 (3 updates tracked since 2021).

About Lia Kimiko Metzger Md NPPES

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

LIA KIMIKO METZGER MD (NPI 1043898596) is an individual critical care medicine provider in Boston, Massachusetts, licensed in Massachusetts (1023614) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1043898596
Entity TypeIndividualFemale
Primary Taxonomy207LC0200X
Provider Legal NameLIA KIMIKO METZGERCredential: MD
Location Address75 FRANCIS STBoston, MA 02115-6110
Mailing Address74 Kent St Apt 12Brookline, MA 02445-7917 · (510) 220-1724
Phone(617) 732-8210
Sole ProprietorYes
Enumeration DateMarch 29, 2021
Last NPPES UpdateOctober 7, 20263 updates tracked since enumeration
NPPES CertifiedOctober 7, 2026
✔ NPI 1043898596 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Critical Care MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207LC0200X
License✔ Licensed in MA · 1023614
Definition
An anesthesiologist, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedAnesthesiologyTaxonomy 207L00000X · License 1023614 (MA)
75 FRANCIS ST, Boston, MA 02115
Open in Google Maps ↗

Secondary Practice Locations 2

Location 155 Fruit StBoston, MA 02114-2696 · Phone (617) 726-3030
Location 2330 Brookline AveBoston, MA 02215-5491 · Phone (617) 667-5086

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Lia Kimiko Metzger Md 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.

Medicare Billing Reassignment

Medicare enrollment records show Lia Metzger reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Brigham & Womens Physicians Organization Inc
Same address
Internal Medicine
75 FRANCIS ST
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 4,574 clinicians in this Medicare group
NPI 1033535497 (617) 732-5500

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

RUMA RAJBHANDARI
Internal Medicine (Gastroenterology)
75 FRANCIS ST
BOSTON, MA 02115
Suffolk County (617) 525-6841
WENYA LINDA BI
Neurological Surgery
75 FRANCIS ST
BOSTON, MA 02115
Suffolk County (203) 645-9485
CHI YUEN CHAN M.D.
Student in an Organized Health Care Education/Training Program
75 FRANCIS ST
BOSTON, MA 02115
Suffolk County (617) 732-5500
JENNIFER MICHELLE THOMAS MD
Radiology (Diagnostic Radiology)
75 FRANCIS ST, DEPARTMENT OF RADIOLOGY
BOSTON, MA 02115
Suffolk County (617) 732-6248
GAURAV SHARMA M.D.
Surgery (Vascular Surgery)
75 FRANCIS ST, BRIGHAM AND WOMEN'S HOSPITAL
BOSTON, MA 02115
Suffolk County (951) 259-0890
YEU-SHIN CINDY CHANG M.D., M.P.H.
Emergency Medicine
75 FRANCIS ST, BWH DEPT. OF EMERGENCY MEDICINE
BOSTON, MA 02115
Suffolk County (617) 732-8070
CARA L RICHARDS
Physician Assistant
75 FRANCIS ST
BOSTON, MA 02115
Suffolk County (617) 732-5500
LARA COAKLEY
Nurse Practitioner (Family)
75 FRANCIS ST
BOSTON, MA 02115
Suffolk County (617) 732-5500

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 Lia Metzger's NPI number?

The NPI number for Lia Metzger is 1043898596. It was assigned to this individual provider in the NPPES registry on March 29, 2021.

Where is Lia Metzger located?

Lia Metzger practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 732-8210.

What is Lia Metzger's specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Critical Care Medicine, with taxonomy code 207LC0200X.

Is Lia Metzger enrolled in Medicare?

Yes. Lia Metzger is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Lia Metzger's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lia Metzger reassigns Medicare benefits to Brigham & Womens Physicians Organization Inc (Boston, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lia Metzger's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Lia Metzger accept?

Health plans from Taro Health list Lia Metzger as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Lia Metzger was last updated on October 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 31 days 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.