Individual provider Active NPI

Chelsea Marie Abad, CRNP, AGPCNP - BC

  • Gerontology Nurse Practitioner
  • Duarte, CA
National Provider Identifier
1952848137
Registry record updated Dec 30, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gerontology Nurse PractitionerTaxonomy code 363LG0600X
License
95005796 Issued in CA
Practice address
1500 Duarte Rd
Duarte, CA 91010-3012
Phone
(626) 256-4673
NPI assigned
Jan 25, 2017
Last updated
Dec 30, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 30, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X 95005796 CA
Gerontology Nurse Practitioner 363LG0600X 95005796 CA Primary

Addresses

Primary practice location

1500 Duarte Rd
Duarte, CA 91010-3012

Mailing address

PO Box 512185
Los Angeles, CA 90051-0185

Other practice location 1

1225 N H St
Lompoc, CA 93436-3301
Phone (805) 737-8744

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address cabad@allphasesderm.com
Direct Messaging Address direct@cityofhope.direct-ci.com Direct CITY OF HOPE MEDICAL FOUNDATION

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, DC2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20170713002241 CA Practitioner - Nurse Practitioner 0042589632 Reassigns benefits to 1 organization
I20221031000801 DC Practitioner - Nurse Practitioner 0042589632 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2016
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
City of Hope Medical FoundationGroup PAC ID 3779751656, 964 clinicians
Allphases Dermatology LLCGroup PAC ID 7012983414, 7 clinicians

Practice addresses (Care Compare)

1500 Duarte Rd
Duarte, CA 91010-3012
Phone (626) 256-4673

6355 Walker LN
Suite 311
Alexandria, VA 22310-3258
Phone (703) 822-0222

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
82.34 of 100Reported as group
Quality
67.9
Promoting interoperability
100
Improvement activities
40
Cost
69.47

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
95005796CAMDGerontology Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Allphases Dermatology LLC CurrentSince May 1, 2025 Accepting new patients
Medstar Medical Group II LLC CurrentSince Oct 1, 2023 Accepting new patients
Washington Hospital Center Corp Current Accepting new patients
Washington Hospital Center Corp CurrentSince Sep 1, 2022 Accepting new patients
City of Hope Medical Foundation PastSince Jun 27, 2021 Accepting new patients

Locations

110 Irving St NW
Washington, DC 20010
Phone (202) 877-2000

1133 21st St NW
Washington, DC 20036
Phone (202) 223-9040

1145 19th St NW
Ste 311
Washington, DC 20036
Phone (202) 429-2401

6355 Walker Ln
Ste 311
Alexandria, VA 22310
Phone (703) 822-0222

Interoperability endpoints

  • Direct secure messaging: direct@cityofhope.direct-ci.com

Organizations & group practices 6

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

Hospital & facility affiliations 2

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": "1485302400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1767052800000",
    "number": "1952848137",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 512185",
            "city": "LOS ANGELES",
            "state": "CA",
            "postal_code": "900510185"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 DUARTE RD",
            "city": "DUARTE",
            "state": "CA",
            "postal_code": "910103012",
            "telephone_number": "626-256-4673"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1225 N H St",
            "address_purpose": "LOCATION",
            "city": "Lompoc",
            "state": "CA",
            "postal_code": "934363301",
            "country_code": "US",
            "telephone_number": "805-737-8744",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ABAD",
        "first_name": "CHELSEA",
        "middle_name": "MARIE",
        "credential": "CRNP, AGPCNP - BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-01-25",
        "last_updated": "2025-12-30",
        "certification_date": "2025-12-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CA",
            "license": "95005796",
            "primary": false
        },
        {
            "code": "363LG0600X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Gerontology",
            "state": "CA",
            "license": "95005796",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cabad@allphasesderm.com",
            "affiliation": "N",
            "address_1": "6355 Walker Ln Ste 311",
            "city": "Alexandria",
            "state": "VA",
            "country_code": "US",
            "postal_code": "223103258",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "direct@cityofhope.direct-ci.com",
            "affiliation": "Y",
            "affiliationName": "CITY OF HOPE MEDICAL FOUNDATION",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "1500 Duarte Rd",
            "city": "Duarte",
            "state": "CA",
            "country_code": "US",
            "postal_code": "910103012",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Duarte, CA

Sources for this page

Verify at the official NPI Registry.