Active NPI
Gregg J Silverman, M.D.
- Internal Medicine Physician
- La Jolla, CA
National Provider Identifier
1952327009
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- G49612
- Practice address
- 9500 Gilman Dr
Department of Medicine - 0663
La Jolla, CA 92093-5004 - Phone
- (858) 534-5439
- Fax
- (858) 822-5230
- NPI assigned
- Jul 14, 2006
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Internal Medicine Physician | 207R00000X | G49612 | CA | Primary |
| Rheumatology Physician | 207RR0500X | G49612 | CA |
Addresses
Primary practice location
9500 Gilman Dr
Department of Medicine - 0663
La Jolla, CA 92093-5004
Mailing address
9500 Gilman Dr
Department of Medicine - 0663
La Jolla, CA 92093-5004
Phone (858) 534-5439
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00G496120 | Medicaid | CA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in NY
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20190910000235 | NY | Order and Referring Only - Rheumatology | 6002145539 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| G49612 | CA | MD | Rheumatology Physician |
Networks
- Healthfirst Medicare Network H9678
- Healthfirst Medicare Network H1722
- Healthfirst Medicare Network H3359
- Healthfirst Medicare Network H5989
Interoperability endpoints
- gsilverman682755@nychhc.direct-ci.com
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1152835200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1757548800000",
"number": "1952327009",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "9500 GILMAN DR",
"address_2": "DEPARTMENT OF MEDICINE - 0663",
"city": "LA JOLLA",
"state": "CA",
"postal_code": "920935004",
"telephone_number": "858-534-5439",
"fax_number": "858-822-5230"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "9500 GILMAN DR",
"address_2": "DEPARTMENT OF MEDICINE - 0663",
"city": "LA JOLLA",
"state": "CA",
"postal_code": "920935004",
"telephone_number": "858-534-5439",
"fax_number": "858-822-5230"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SILVERMAN",
"first_name": "GREGG",
"middle_name": "J",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-07-14",
"last_updated": "2025-09-11",
"status": "A"
},
"taxonomies": [
{
"code": "207R00000X",
"taxonomy_group": "",
"desc": "Internal Medicine",
"state": "CA",
"license": "G49612",
"primary": true
},
{
"code": "207RR0500X",
"taxonomy_group": "",
"desc": "Internal Medicine, Rheumatology",
"state": "CA",
"license": "G49612",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "00G496120",
"state": "CA"
}
],
"endpoints": [],
"other_names": []
}Other providers in La Jolla, CA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.