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

MWANASHA HAMUZA MERRILL MD
NPI 1245724962
Internal Medicine - Hematology in Boston, MA

Active since June 16, 2018PECOS Enrolled
330 BROOKLINE AVE, BOSTON, MA 02215(617) 667-7000 Get Directions Write a Review

NPPES record last updated: September 4, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Sep 4, 2026, Jun 18, 2018, Jun 16, 2018 (3 updates tracked since 2018).

About Mwanasha Hamuza Merrill Md NPPES

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

MWANASHA HAMUZA MERRILL MD (NPI 1245724962) is an individual hematology provider in Boston, Massachusetts, licensed in Massachusetts (275949) and active in the NPI registry since June 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Tufts University School Of Medicine (2018).

NPPES Registry Identity

NPI1245724962
Entity TypeIndividualFemale
Primary Taxonomy207RH0000X
Provider Legal NameMWANASHA HAMUZA MERRILLCredential: MD
Location Address330 BROOKLINE AVEBoston, MA 02215
Mailing Address55 Fruit StBoston, MA 02114-2696 · (617) 667-7000
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2018
Enumeration DateJune 16, 2018
Last NPPES UpdateSeptember 4, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 4, 2026
NPI 1245724962 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · HematologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0000X
License Licensed in MA · 275949
Definition
An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.
330 BROOKLINE AVE, Boston, MA 02215

Secondary Practice Location 1

Location 175 Francis StBoston, MA 02115-6110 · Phone (617) 732-5500

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Mwanasha Hamuza Merrill Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5496003774
PECOS Enrollment IDI20240918002049
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 02215 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
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.

Chronic Disease Hospital (Children)
330 BROOKLINE AVE
BOSTON, MA 02215
Internal Medicine
330 BROOKLINE AVE, PULMONARY AND CRITICAL CARE DEPARTMENT
BOSTON, MA 02215
Dermatology
330 BROOKLINE AVE, SHAPIRO 2
BOSTON, MA 02215
Anesthesiology
330 BROOKLINE AVE
BOSTON, MA 02215
Psychologist (Clinical)
330 BROOKLINE AVE
BOSTON, MA 02215
Hospitalist
330 BROOKLINE AVE
BOSTON, MA 02215
Obstetrics & Gynecology (Gynecologic Oncology)
330 BROOKLINE AVE, KIRSTEIN 3
BOSTON, MA 02215
Student in an Organized Health Care Education/Training Program
330 BROOKLINE AVE
BOSTON, MA 02215

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 Mwanasha Merrill's NPI number?

The NPI number for Mwanasha Merrill is 1245724962. It was assigned to this individual provider in the NPPES registry on June 16, 2018.

Where is Mwanasha Merrill located?

Mwanasha Merrill practices at 330 Brookline Ave, Boston, MA 02215. The listed phone number is (617) 667-7000.

What is Mwanasha Merrill's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.

Is Mwanasha Merrill enrolled in Medicare?

Yes. Mwanasha Merrill is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Mwanasha Merrill was last updated on September 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.