NPIMap

Individual provider Active NPI

Daniel Ritz Witt, MD

  • Internal Medicine Physician
  • Wellesley, MA
National Provider Identifier
1710513510
Registry record updated Jun 30, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
1017832 Issued in MA
Practice address
62 Walnut St Ste 2
Wellesley, MA 02481-2109
Phone
(857) 678-3901
Fax
(857) 314-6445
NPI assigned
Mar 12, 2020
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 30, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Hospitalist Physician 208M00000X 1017832 MA
Internal Medicine Physician 207R00000X 1017832 MA Primary

Addresses

Primary practice location

62 Walnut St Ste 2
Wellesley, MA 02481-2109

Mailing address

62 Walnut St Ste 2
Wellesley Hills, MA 02481-2109
Phone (857) 678-3901

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
I20240608000048 MA Practitioner - Internal Medicine 4385045509 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Associated Physicians of Harvard Medical Faculty Physicians at Beth IsGroup PAC ID 6305749987, shared by 7 NPIs, 566 clinicians

Practice addresses (Care Compare)

199 Reedsdale Rd
Milton, MA 02186-3926
Phone (617) 696-4600

62 Walnut St
Suite 2
Wellesley, MA 02481-2109
Phone (857) 678-3901

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
1017832MAMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Associated Physicians of Harvard Medical Faculty Physicians at Beth Is CurrentSince Jun 30, 2024 Accepting new patients
Associated Physicians of Harvard Medical Faculty Physicians at Beth Is Current Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Internal Medicine CurrentSince Jun 30, 2024 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc CurrentSince Jun 30, 2024 Accepting new patients
Goodhaven Health PLLC Internal Medicine CurrentSince May 18, 2025 Accepting new patients
Associated Physicians of Harvard Medical Faculty Physicians at Beth Is Internal Medicine CurrentSince Jun 30, 2024 Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Past Accepting new patients
Harvard Medical Faculty Phys at Beth Israel Deaconess Med Ctr Inc Past Accepting new patients
Beth Israel Deaconess Hospital Plymouth, Inc. Past Accepting new patients
Beth Israel Deaconess Medical Center, Inc. Past Accepting new patients

Locations

330 Brookline Ave
#2
Boston, MA 02215
Phone (617) 632-8383

330 Brookline Ave
Boston, MA 02215
Phone (617) 667-2000

199 Reedsdale Rd
Milton, MA 02186
Phone (617) 313-1000

101 Page St
New Bedford, MA 02740
Phone (508) 961-5425

62 Walnut St
Ste 2
Wellesley Hills, MA 02481
Phone (617) 769-2100

Interoperability endpoints

  • Direct secure messaging: daniel.witt.1@33509.direct.athenahealth.com
  • Direct secure messaging: dwitt439389@direct.bilh.masshiway.net

Organizations & group practices 10

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 3

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": "1583971200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782777600000",
    "number": "1710513510",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "62 WALNUT ST STE 2",
            "city": "WELLESLEY HILLS",
            "state": "MA",
            "postal_code": "024812109",
            "telephone_number": "857-678-3901",
            "fax_number": "857-314-6445"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "62 WALNUT ST STE 2",
            "city": "WELLESLEY",
            "state": "MA",
            "postal_code": "024812109",
            "telephone_number": "857-678-3901",
            "fax_number": "857-314-6445"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WITT",
        "first_name": "DANIEL",
        "middle_name": "RITZ",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2020-03-12",
        "last_updated": "2026-06-30",
        "certification_date": "2026-06-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MA",
            "license": "1017832",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "1017832",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Wellesley, MA

Sources for this page

Verify at the official NPI Registry.