NPIMap

Individual provider Active NPI

Heidi Chang, MD

  • Obstetrics & Gynecology Physician
  • Walnut Creek, CA
National Provider Identifier
1649681982
Registry record updated Nov 13, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
A128445 Issued in CA
Practice address
2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone
(925) 393-0033
Fax
(925) 301-8956
NPI assigned
May 8, 2014
Last updated
Nov 13, 2024By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Nov 13, 2024

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X A128445 CA Primary

Addresses

Primary practice location

2637 Shadelands Dr
Walnut Creek, CA 94598-2512

Mailing address

2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone (925) 393-0033

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
I20160510002097 CA Practitioner - Obstetrics/Gynecology 6901195262 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
University of Virginia School of Medicine, 2012
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Emergency and Acute Care Medical CorporationGroup PAC ID 9537108279, 431 clinicians
South Coast Gynecologic Oncology IncGroup PAC ID 1557366556, 7 clinicians

Practice addresses (Care Compare)

5555 Grossmont Ctr Dr
La Mesa, CA 91942-3019
Phone (619) 740-6000

9095 Rio San Diego Dr
Suite 425
San Diego, CA 92108-1679
Phone 8584555524205

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
95.17 of 100Reported as group
Quality
86.93
Promoting interoperability
100
Improvement activities
40
Cost
72.6

Procedures performed for Medicare patients

ProcedureNumber of procedures
Colonoscopy1-10
Melanoma (skin cancer) excision1-10
Removal of the uterus22

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
A128445CAMDObstetrics & Gynecology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
County of Los Angeles Auditor Controller CurrentSince Apr 1, 2016 Accepting new patients
Bass Medical Group CurrentSince Jul 20, 2019 Accepting new patients
Bass Medical Group Obstetrics & Gynecology Current Accepting new patients
County of Los Angeles CurrentSince Apr 1, 2016 Accepting new patients
Emergency and Acute Care Medical Corporation CurrentSince Mar 1, 2025 Accepting new patients
Bass Medical Group CurrentSince Jul 20, 2019 Accepting new patients
County of Los Angeles Current Accepting new patients
South Coast Gynecologic Oncology, Inc CurrentSince Feb 3, 2025 Accepting new patients

Locations

1505 Saint Alphonsus Way
Alamo, CA 94507
Phone (925) 837-4225

5555 Grossmont Center Dr
La Mesa, CA 91942
Phone (619) 465-0711

7901 Frost St
San Diego, CA 92123
Phone (619) 541-3400

9095 Rio San Diego Dr
Ste 425
San Diego, CA 92108
Phone (858) 455-5524

14445 Olive View Dr
Sylmar, CA 91342
Phone (881) 836-4303

2637 Shadelands Dr
Walnut Creek, CA 94598
Phone (925) 627-3424

365 Lennon Ln
Ste 250
Walnut Creek, CA 94598
Phone (925) 627-3424

Interoperability endpoints

  • Direct secure messaging: hchang462142@hisp.ehr.sutterhealth.org
  • Direct secure messaging: hchang46799@alamedahs.direct-ci.com

Organizations & group practices 8

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 5

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": "1399507200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1731456000000",
    "number": "1649681982",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-393-0033",
            "fax_number": "925-301-8956"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2637 SHADELANDS DR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945982512",
            "telephone_number": "925-393-0033",
            "fax_number": "925-301-8956"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHANG",
        "first_name": "HEIDI",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2014-05-08",
        "last_updated": "2024-11-13",
        "certification_date": "2024-11-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "CA",
            "license": "A128445",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Walnut Creek, CA

Sources for this page

Verify at the official NPI Registry.