NPIMap

Individual provider Active NPI

Alan T. Chang, M.D.

  • Internal Medicine Physician
  • Escondido, CA
National Provider Identifier
1699784934
Registry record updated Dec 12, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
G79904 Issued in CA
Practice address
225 East 2ND Avenue
Escondido, CA 92025-4249
Phone
(760) 291-6700
Fax
(760) 745-1588
NPI assigned
Aug 5, 2006
Last updated
Dec 12, 2024By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 12, 2024

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X G79904 CA Primary

Addresses

Primary practice location

225 East 2ND Avenue
Escondido, CA 92025-4249

Mailing address

225 East Second Avenue
Escondido, CA 92025-4249
Phone (760) 291-6700

Other identifiers 1

IdentifierTypeStateIssuer
00A623420MedicaidCA

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA
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
I20100804000976 CA Practitioner - Internal Medicine 4880727395 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
University of Southern California Keck School of Medicine, 1995
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Graybill Medical Group IncGroup PAC ID 9335050517, 103 clinicians
Del Sur HealthcareGroup PAC ID 1850827395, 61 clinicians

Practice addresses (Care Compare)

225 E 2ND Ave
Escondido, CA 92025-4212
Phone (866) 228-2236

436 S Magnolia Ave
Suite 101
El Cajon, CA 92020-5219
Phone (760) 978-8596

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of skin lesions1-10
Removal or shaving of skin growth1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
G79904CAMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Senior Medical Associates, Inc. CurrentSince Sep 30, 2024 Accepting new patients
Del Sur Healthcare CurrentSince Feb 20, 2025 Accepting new patients
Graybill Medical Group Inc Internal Medicine CurrentSince Jan 1, 2017 Accepting new patients
Sharp Memorial Hospital Past Accepting new patients
Grossmont Medical Clinic a Professional Corporation PastSince Jan 17, 2021 Accepting new patients
Sharp Chula Vista Medical Center Past Accepting new patients
Palomar Medical Group, Inc Internal Medicine PastSince Jan 1, 2021 Accepting new patients

Locations

436 S Magnolia Ave
Ste 101
El Cajon, CA 92020
Phone (760) 978-8596

225 E 2nd Ave
Escondido, CA 92025

225 E 2nd Ave
Ste 230
Escondido, CA 92025

225 E 2nd Ave
Ste 340
Escondido, CA 92025
Phone (760) 489-0908

332 S Juniper St
Ste 100
Escondido, CA 92025
Phone (760) 291-6650

625 E Grand Ave
Escondido, CA 92025
Phone (760) 745-1551

2810 Camino del Rio S
Ste 102
San Diego, CA 92108
Phone (619) 299-1419

120 Craven Rd
Ste 201
San Marcos, CA 92078

Interoperability endpoints

  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

Ownership & related parties

All facility ownership & control disclosures 1

Facilities whose Medicare enrollment lists this provider’s PECOS associate ID as an owner or managing party.

FacilityTypeRoleSince
Boulder Creek Post AcutePoway, CA, CCN 555206 Skilled nursing facility Operational/Managerial Control
Adp of the SNF		 Feb 1, 2004
Feb 1, 2004

Owned or controlled facilities with NPI records 1

Facilities whose Medicare enrollment lists this provider as an owner, officer, director or managing party.

Organizations & group practices 7

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 10

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": "1154736000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1733961600000",
    "number": "1699784934",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "225 EAST SECOND AVENUE",
            "city": "ESCONDIDO",
            "state": "CA",
            "postal_code": "920254249",
            "telephone_number": "760-291-6700",
            "fax_number": "760-737-7324"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "225 EAST 2ND AVENUE",
            "city": "ESCONDIDO",
            "state": "CA",
            "postal_code": "920254249",
            "telephone_number": "760-291-6700",
            "fax_number": "760-745-1588"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHANG",
        "first_name": "ALAN",
        "middle_name": "T.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-05",
        "last_updated": "2024-12-12",
        "certification_date": "2024-12-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CA",
            "license": "G79904",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "00A623420",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Escondido, CA

Sources for this page

Verify at the official NPI Registry.