NPIMap

Individual provider Active NPI

CHI-Joan How

  • Medical Oncology Physician
  • Boston, MA
National Provider Identifier
1841671765
Registry record updated Mar 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Oncology PhysicianTaxonomy code 207RX0202X
License
274726 Issued in MA
Practice address
450 Brookline Ave
Boston, MA 02215-5418
Phone
(617) 632-3779
Fax
(617) 632-5822
NPI assigned
Jun 16, 2015
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 3, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 2015017268 MO
Hematology (Internal Medicine) Physician 207RH0000X 279411 MA
Medical Oncology Physician 207RX0202X 274726 MA Primary

Addresses

Primary practice location

450 Brookline Ave
Boston, MA 02215-5418

Mailing address

450 Brookline Ave # Smith353
Boston, MA 02215-5450
Phone (617) 632-3779

Other practice location 1

55 Fruit St
Boston, MA 02114-2621
Phone (617) 726-2000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20210611001922 MA Practitioner - Hematology/Oncology 3173837085 Reassigns benefits to 5 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/Oncology
Education
Yale University School of Medicine, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Dana-Farber Cancer Institute, Inc.Group PAC ID 9133038904, shared by 5 NPIs, 671 clinicians
The General Hospital CorporationGroup PAC ID 6507803806, 1,275 clinicians

Practice addresses (Care Compare)

450 Brookline Ave
Boston, MA 02215-5418

55 Fruit St
Boston, MA 02114-2621
Phone (617) 726-2000

75 Francis St
Boston, MA 02115-6110
Phone (617) 732-5500

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
274726MAMDMedical Oncology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Dana-Farber Cancer Institute, Inc. CurrentSince Jul 1, 2021 Accepting new patients
Brigham and Women'S Hospital Current Accepting new patients
Dana-Farber Cancer Institute, Inc. Medical Oncology CurrentSince Jul 1, 2021 Accepting new patients
Dana-Farber Cancer Institute, Inc. CurrentSince Jul 1, 2021 Accepting new patients
Brigham & Womens Physicians Organization Inc Internal Medicine CurrentSince Aug 1, 2021 Accepting new patients
Dana-Farber Cancer Institute, Inc. Past Accepting new patients
Brigham & Womens Hospital, Inc. Past Accepting new patients

Locations

450 Brookline Ave
Boston, MA 02215
Phone (508) 478-2061

55 Fruit St
Boston, MA 02114

450 Brookline Ave
#353
Boston, MA 02215
Phone (617) 632-3779

75 Francis St
Boston, MA 02115

254 2nd Ave
Ste 100
Needham Heights, MA 02494
Phone (781) 416-8412

Interoperability endpoints

  • Direct secure messaging: how.chi-joan.bwh@direct.partners.masshiway.net

Organizations & group practices 9

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 7

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1434412800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772496000000",
    "number": "1841671765",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "450 BROOKLINE AVE # SMITH353",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155450",
            "telephone_number": "617-632-3779",
            "fax_number": "617-632-5822"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "450 BROOKLINE AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "022155418",
            "telephone_number": "617-632-3779",
            "fax_number": "617-632-5822"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "55 Fruit St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142621",
            "country_code": "US",
            "telephone_number": "617-726-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HOW",
        "first_name": "CHI-JOAN",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-06-16",
        "last_updated": "2026-03-03",
        "certification_date": "2026-03-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MO",
            "license": "2015017268",
            "primary": false
        },
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "MA",
            "license": "279411",
            "primary": false
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "MA",
            "license": "274726",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.