Active NPI
Thomas Alexander Meredith, MD, PHD
- Interventional Cardiology Physician
- Palo Alto, CA
National Provider Identifier
1831056399
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Interventional Cardiology Physician
- License
- SPI969
- Practice address
- 500 Pasteur Dr
Palo Alto, CA 94304-1048 - Phone
- (650) 723-4000
- NPI assigned
- Jan 7, 2026
- 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 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Interventional Cardiology Physician | 207RI0011X | SPI969 | CA | Primary |
| Cardiovascular Disease Physician | 207RC0000X | SPI969 | CA | |
| Interventional Cardiology Physician | 207RI0011X | PTL20666 | CA |
Addresses
Primary practice location
500 Pasteur Dr
Palo Alto, CA 94304-1048
Mailing address
500 Pasteur Dr
Palo Alto, CA 94304-1048
Phone (650) 723-4000
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: No
- Hospice: Yes
Care Compare profile
Medicare Care Compare- Specialty
- Interventional Cardiology
- Education
- Other, 2013
- Medicare assignment
- May accept Medicare assignment
Practice addresses (Care Compare)
500 Pasteur Dr
FL 3
Palo Alto, CA 94304-1048
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine, Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| PTL20666 | CA | MD | Interventional Cardiology Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1767744000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1786320000000",
"number": "1831056399",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "500 PASTEUR DR",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943041048",
"telephone_number": "650-723-4000"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "500 PASTEUR DR",
"city": "PALO ALTO",
"state": "CA",
"postal_code": "943041048",
"telephone_number": "650-723-4000"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MEREDITH",
"first_name": "THOMAS",
"middle_name": "ALEXANDER",
"name_prefix": "Dr.",
"credential": "MD, PHD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2026-01-07",
"last_updated": "2026-08-10",
"certification_date": "2026-08-10",
"status": "A"
},
"taxonomies": [
{
"code": "207RI0011X",
"taxonomy_group": "",
"desc": "Internal Medicine, Interventional Cardiology",
"state": "CA",
"license": "SPI969",
"primary": true
},
{
"code": "207RC0000X",
"taxonomy_group": "",
"desc": "Internal Medicine, Cardiovascular Disease",
"state": "CA",
"license": "SPI969",
"primary": false
},
{
"code": "207RI0011X",
"taxonomy_group": "",
"desc": "Internal Medicine, Interventional Cardiology",
"state": "CA",
"license": "PTL20666",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Palo Alto, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 10, 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.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.