Individual provider Active NPI

David M Mills, MD

  • Pediatric Emergency Medicine (Pediatrics) Physician
  • Boston, MA
National Provider Identifier
1194145946
Registry record updated Jan 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Emergency Medicine (Pediatrics) PhysicianTaxonomy code 2080P0204X
License
274166 Issued in MA
Practice address
300 Longwood Ave
Boston, MA 02115-5724
Phone
(617) 355-6000
NPI assigned
Apr 21, 2014
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 28, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatric Emergency Medicine (Pediatrics) Physician 2080P0204X 274166 MA Primary
Pediatrics Physician 208000000X A185026 CA
Pediatric Emergency Medicine (Emergency Medicine) Physician 207PP0204X A185026 CA

Addresses

Primary practice location

300 Longwood Ave
Boston, MA 02115-5724

Mailing address

300 Longwood Ave
Boston, MA 02115-5724
Phone (617) 355-6000

Other practice location 1

3020 Childrens Way
San Diego, CA 92123-4223
Phone (858) 576-1700

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA, CA2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20200602002163 MA Practitioner - Emergency MedicinePractitioner - Pediatric Medicine 1951609312 Reassigns benefits to 1 organization
I20231102003661 CA Practitioner - Emergency Medicine 1951609312 Reassigns benefits to 1 organization

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A185026CAMDPediatric Emergency Medicine (Emergency Medicine) Physician
274166MAMDPediatric Emergency Medicine (Pediatrics) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Rady Children'S Hospital San Diego Pediatrics CurrentSince Sep 10, 2023 Accepting new patients
Rady Children'S Hospital San Diego CurrentSince Sep 10, 2023 Accepting new patients
Marilyn Kaufhold, M.D., a Medical Corporation PastSince Jun 11, 2023 Accepting new patients

Locations

25170 Hancock Ave
Murrieta, CA 92562
Phone (858) 757-3277

25500 Medical Center Dr
Murrieta, CA 92562
Phone (951) 696-6000

3020 Childrens Way
San Diego, CA 92123
Phone (858) 966-5841

3020 Childrens Way
#5003
San Diego, CA 92123
Phone (858) 309-6300

Organizations & group practices 4

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.

NPI Registry JSON

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

{
    "created_epoch": "1398038400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769558400000",
    "number": "1194145946",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-355-6000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 LONGWOOD AVE",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021155724",
            "telephone_number": "617-355-6000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3020 Childrens Way",
            "address_purpose": "LOCATION",
            "city": "San Diego",
            "state": "CA",
            "postal_code": "921234223",
            "country_code": "US",
            "telephone_number": "858-576-1700",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MILLS",
        "first_name": "DAVID",
        "middle_name": "M",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-04-21",
        "last_updated": "2026-01-28",
        "certification_date": "2026-01-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0204X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Emergency Medicine",
            "state": "MA",
            "license": "274166",
            "primary": true
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "CA",
            "license": "A185026",
            "primary": false
        },
        {
            "code": "207PP0204X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Pediatric Emergency Medicine",
            "state": "CA",
            "license": "A185026",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Boston, MA

Sources for this page

Verify at the official NPI Registry.