DR. JOSEPHINE MUN-YEE LOK MD
NPI 1033100680
Pediatrics - Pediatric Critical Care Medicine in Boston, MA

Q: What is Josephine Lok's NPI number?

The NPI number for Josephine Lok is 1033100680. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Q: What is Josephine Lok's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Q: When was this NPI record last updated?

The NPPES record for Josephine Lok was last updated on September 30, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.

Active since November 02, 2005PECOS Enrolled

55 FRUIT ST, ELL 317, BOSTON, MA 02114(617) 724-4380(617) 724-4391 Get Directions Write a Review

NPPES record last updated: September 30, 2014. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Dr. Josephine Mun-yee Lok Md NPPES

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

DR. JOSEPHINE MUN-YEE LOK MD (NPI 1033100680) is an individual pediatric critical care medicine provider in Boston, Massachusetts, licensed in Massachusetts (78162) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1033100680

Entity TypeIndividualFemale

Primary Taxonomy2080P0203X

Provider Legal NameDR. JOSEPHINE MUN-YEE LOKCredential: MD

Location Address55 FRUIT ST, ELL 317Boston, MA 02114-2621

Mailing AddressPo Box 9142, Mass General Physicians OrganizationCharlestown, MA 02129-9142 · (617) 724-4380 · Fax (617) 724-4391

Phone(617) 724-4380

Fax(617) 724-4391

Sole ProprietorNo

Enumeration DateNovember 2, 2005

Last NPPES UpdateSeptember 30, 2014

✔ NPI 1033100680 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2080P0203X

License✔ Licensed in MA · 78162

Definition

A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists.

55 FRUIT ST, Boston, MA 02114

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Other Identifiers 5

Medicare UPINF65409

OtherJ26713MA · Bcbs Ma

Medicaid0186881MA

Medicare PINA3480502MA

Other078162MA · Tufts Health Plan

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include AmeriHealth Caritas Next, 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)

Dr. Josephine Mun-yee Lok 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 Reassignments

Medicare enrollment records show Josephine Lok reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The General Hospital Corporation

Same address

General Acute Care Hospital

55 FRUIT ST, BULFINCH 360
Boston, MA 02114

Reassigned Medicare billing, Massachusetts enrollment
6,234 clinicians in this Medicare group

NPI 1023049236 (617) 726-2000

Massachusetts General Physicians Organization Inc

Same address

Dermatology

55 FRUIT ST, BUL 2
Boston, MA 02114

Reassigned Medicare billing, Massachusetts enrollment
6,360 clinicians in this Medicare group

NPI 1801874573 (617) 724-0287

The Shriners' Hospital For Children

0.1 mi

Pediatric Surgery

51 BLOSSOM ST
Boston, MA 02114

Reassigned Medicare billing, Massachusetts enrollment
128 clinicians in this Medicare group

NPI 1366886525 (617) 371-2300

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.

STUTI GIRISH SHROFF MD, MBBS

Pathology (Anatomic Pathology)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 726-2971

NANCY WANG M.D.

Internal Medicine (Hematology & Oncology)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (017) 724-4000

DR. DUSAN HANIDZIAR M.D., PH.D.

Anesthesiology

55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114

Suffolk County (617) 726-3030

JOHN JOSEPH DANKO DO

Physical Medicine & Rehabilitation

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 726-2000

DR. MICHAEL ANDREW LOBRITZ M.D, PH.D.

Internal Medicine (Infectious Disease)

55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114

Suffolk County (617) 724-9248

MS. KELLY ELISHA TRECARTIN NP

Nurse Practitioner (Acute Care)

55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114

Suffolk County (617) 726-7400

JAMIE MARIE ALLEN NP

Nurse Practitioner

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 724-4410

DR. DHAVAL SANJEEV KOLTE M.B.B.S., PH.D.

Internal Medicine (Cardiovascular Disease)

55 FRUIT ST
BOSTON, MA 02114

Suffolk County (617) 643-3238

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 Josephine Lok's NPI number?

The NPI number for Josephine Lok is 1033100680. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Where is Josephine Lok located?

Josephine Lok practices at 55 Fruit St Ell 317, Boston, MA 02114. The listed phone number is (617) 724-4380.

What is Josephine Lok's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Josephine Lok enrolled in Medicare?

Yes. Josephine Lok is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Josephine Lok's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Josephine Lok reassigns Medicare benefits to 3 organizations: The General Hospital Corporation (Boston, MA), Massachusetts General Physicians Organization Inc (Boston, MA) and The Shriners' Hospital For Children (Boston, MA). Each 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 Josephine Lok's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Josephine Lok accept?

Health plans from AmeriHealth Caritas Next and Taro Health list Josephine Lok 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 Josephine Lok was last updated on September 30, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years 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.