Active NPI
Nathaniel Greenwood, D.O.
- Emergency Medicine Physician
- Cedar Park, TX
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Emergency Medicine Physician
- License
- P2863
- Practice address
- 3620 E Whitestone Blvd
Cedar Park, TX 78613-7441 - Phone
- (512) 260-2732
- NPI assigned
- May 14, 2007
- Last updated
- Mar 25, 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 4
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Emergency Medicine Physician | 207P00000X | OT011248 | PA | |
| Emergency Medicine Physician | 207P00000X | 2008 | NE | |
| Emergency Medicine Physician | 207P00000X | P2863 | TX | Primary |
| General Practice Physician | 208D00000X | 2008 | NE |
Addresses
Primary practice location
3620 E Whitestone Blvd
Cedar Park, TX 78613-7441
Mailing address
3620 E Whitestone Blvd
Cedar Park, TX 78613-7441
Phone (512) 260-2732
Other practice location 1
14404 Stoney Brook Blvd
Omaha, NE 68137-2613
Phone (512) 506-8503
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in TX, NE
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- General Practice
- Education
- Pennsylvania State University College of Medicine, 2008
- Medicare assignment
- May accept Medicare assignment
- Group practices
Practice addresses (Care Compare)
14404 Stoney Brook Blvd
Omaha, NE 68137-2613
Phone (402) 279-1960
230 Deer Ridge Dr
Round Rock, TX 78681-5515
Phone (512) 766-1400
5012 RM 620
Austin, TX 78732-1846
Phone (512) 851-1011
8703 Bandera Rd
San Antonio, TX 78250-2504
Phone (210) 332-5460
Hospital & facility affiliations
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Osteopathy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| OT011248 | PA | MD | Emergency Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Brushy Creek Emergency Physicians PLLC | Emergency Medicine | Current | Accepting new patients |
| Bandera Emergency Physicians, PLLC | Current | Accepting new patients | |
| Lake Travis Emergency Physicians, PLLC | Emergency Medicine | Current | Accepting new patients |
| Lake Travis ER, LLC | Emergency Medicine | Past | Accepting new patients |
| Round Rock Outpatient Care PLLC | Past | Accepting new patients |
Locations
1860 S Lakeline Blvd
Cedar Park, TX 78613
Phone (512) 506-8503
3620 E Whitestone Blvd
Cedar Park, TX 78613
Phone (512) 260-2732
1925 S A W Grimes Blvd
Round Rock, TX 78664
Phone (512) 260-2732
230 Deer Ridge Dr
Round Rock, TX 78681
Phone (512) 766-1400
3600 E Palm Valley Blvd
Ste 3
Round Rock, TX 78665
8703 Bandera Rd
San Antonio, TX 78250
Phone (210) 332-5460
Organizations & group practices 6
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.
-
- Emergency Medical Services (Emergency Medicine) Physician
- San Antonio, TX
- NPI 1649994930
-
- Emergency Medicine Physician
- Round Rock, TX
- NPI 1235773151
-
- Emergency Medicine Physician
- Austin, TX
- NPI 1851803688
-
- Primary Care Nurse Practitioner
- Omaha, NE
- NPI 1952289571
-
- Primary Care Nurse Practitioner
- Cedar Park, TX
- NPI 1891549366
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Round Rock, TX
- NPI 1588215461
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1179100800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1774396800000",
"number": "1770798563",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3620 E WHITESTONE BLVD",
"city": "CEDAR PARK",
"state": "TX",
"postal_code": "786137441",
"telephone_number": "512-260-2732"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "3620 E WHITESTONE BLVD",
"city": "CEDAR PARK",
"state": "TX",
"postal_code": "786137441",
"telephone_number": "512-260-2732"
}
],
"practiceLocations": [
{
"address_1": "14404 Stoney Brook Blvd",
"address_purpose": "LOCATION",
"city": "Omaha",
"state": "NE",
"postal_code": "681372613",
"country_code": "US",
"telephone_number": "512-506-8503",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "GREENWOOD",
"first_name": "NATHANIEL",
"credential": "D.O.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2007-05-14",
"last_updated": "2026-03-25",
"certification_date": "2026-03-25",
"status": "A"
},
"taxonomies": [
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "PA",
"license": "OT011248",
"primary": false
},
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "NE",
"license": "2008",
"primary": false
},
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "TX",
"license": "P2863",
"primary": true
},
{
"code": "208D00000X",
"taxonomy_group": "",
"desc": "General Practice",
"state": "NE",
"license": "2008",
"primary": false
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Cedar Park, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 25, 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.