Active NPI
David L. Madnick, MD
- Cardiovascular Disease Physician
- Walnut Creek, CA
National Provider Identifier
1770102535
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Cardiovascular Disease Physician
- License
- A185810
- Practice address
- 1425 S Main St
Walnut Creek, CA 94596-5318 - Phone
- (925) 295-4050
- NPI assigned
- Apr 13, 2020
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Cardiovascular Disease Physician | 207RC0000X | A185810 | CA | Primary |
Addresses
Primary practice location
1425 S Main St
Walnut Creek, CA 94596-5318
Mailing address
1425 S Main St
Walnut Creek, CA 94596-5318
Phone (925) 295-4050
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| A185810 | CA | MD | Student in an Organized Health Care Education/Training Program |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1586736000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1781654400000",
"number": "1770102535",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1425 S MAIN ST",
"city": "WALNUT CREEK",
"state": "CA",
"postal_code": "945965318",
"telephone_number": "925-295-4050"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1425 S MAIN ST",
"city": "WALNUT CREEK",
"state": "CA",
"postal_code": "945965318",
"telephone_number": "925-295-4050"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MADNICK",
"first_name": "DAVID",
"middle_name": "L.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2020-04-13",
"last_updated": "2026-06-17",
"certification_date": "2026-06-17",
"status": "A"
},
"taxonomies": [
{
"code": "207RC0000X",
"taxonomy_group": "",
"desc": "Internal Medicine, Cardiovascular Disease",
"state": "CA",
"license": "A185810",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Walnut Creek, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 17, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.