Active NPI
Jack Merlin Jacobson, M.D.
- Urology Physician
- Round Rock, TX
National Provider Identifier
1629050323
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Urology Physician
- License
- C6380
- Practice address
- 511 Oakwood Blvd
Suite 103
Round Rock, TX 78681-4007 - Phone
- (512) 244-0161
- Fax
- (512) 244-7814
- NPI assigned
- Nov 17, 2005
- 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 |
|---|---|---|---|---|
| Urology Physician | 208800000X | C6380 | TX | Primary |
Addresses
Primary practice location
511 Oakwood Blvd
Suite 103
Round Rock, TX 78681-4007
Mailing address
511 Oakwood Blvd
Suite 103
Round Rock, TX 78681-4007
Phone (512) 244-0161
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| C6380 | TX | MD | Urology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Urology Associates of Williamson County | Urology | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Urology Physician
- Round Rock, TX
- NPI 1639207558
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1132185600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1629050323",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "511 OAKWOOD BLVD",
"address_2": "SUITE 103",
"city": "ROUND ROCK",
"state": "TX",
"postal_code": "786814007",
"telephone_number": "512-244-0161",
"fax_number": "512-244-7814"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "511 OAKWOOD BLVD",
"address_2": "SUITE 103",
"city": "ROUND ROCK",
"state": "TX",
"postal_code": "786814007",
"telephone_number": "512-244-0161",
"fax_number": "512-244-7814"
}
],
"practiceLocations": [],
"basic": {
"last_name": "JACOBSON",
"first_name": "JACK",
"middle_name": "MERLIN",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-11-17",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "208800000X",
"taxonomy_group": "",
"desc": "Urology",
"state": "TX",
"license": "C6380",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Round Rock, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.