Active NPI
Nathaniel L Barnes, M.D.
- Urology Physician
- Webster, TX
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Urology Physician
- License
- K5799
- Practice address
- 250 Blossom St
Suite 220
Webster, TX 77598-4204 - Phone
- (281) 332-0202
- Fax
- (281) 332-0202
- NPI assigned
- Jul 27, 2005
- Last updated
- Aug 13, 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 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Urology Physician | 208800000X | K5799 | TX | Primary |
Addresses
Primary practice location
250 Blossom St
Suite 220
Webster, TX 77598-4204
Mailing address
930 Frostwood Dr Ste 2.200
Houston, TX 77024-2450
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 044063801 | Medicaid | TX |
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | NATHANIEL.BARNES@DIRECT.MEMORIALHERMANN.ORG |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in TX
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Urology
- Education
- Harvard Medical School, 1989
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
10907 Memorial Hermann Dr
Suite 390
Pearland, TX 77584-4115
Phone (731) 434-4300
11800 Astoria Blvd
Houston, TX 77089-6041
Phone (281) 929-6259
11914 Astoria Blvd
Suite 520
Houston, TX 77089-6050
Phone (281) 481-2804
16100 S Fwy
Pearland, TX 77584-1895
Phone (713) 413-6941
16100 S Fwy N3 172
Pearland, TX 77584-1895
Phone (713) 413-5738
250 Blossom St
Suite 220
Webster, TX 77598-4243
Phone (281) 332-0202
3203 Broadway St
Pearland, TX 77581-1414
Phone (281) 485-8876
915 Gessner Rd
Suite 100
Houston, TX 77024-2537
Phone (713) 242-2222
Hospital & facility affiliations
Procedures performed for Medicare patients
| Procedure | Number of procedures |
|---|---|
| Upper gastrointestinal (GI) endoscopy for acid reflux | 1-10 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Memorial Hermann Medical Group | Urology | Current | Accepting new patients |
Locations
1505 E Winding Way Dr
Ste 200
Friendswood, TX 77546
Phone (713) 366-7800
11914 Astoria Blvd
Ste 520
Houston, TX 77089
Phone (281) 332-0202
1801 North Loop W
Ste 30
Houston, TX 77008
Phone (713) 802-9781
909 Frostwood Dr
Ste 1100
Houston, TX 77024
Phone (713) 338-4523
915 Gessner Rd
Ste 100
Houston, TX 77024
Phone (713) 242-2222
930 Frostwood Dr
Ste 2200
Houston, TX 77024
3203 Broadway St
Pearland, TX 77581
Phone (281) 485-8876
250 Blossom St
Ste 220
Webster, TX 77598
Phone (281) 332-0202
Interoperability endpoints
- nathaniel.barnes@direct.memorialhermann.org
- nbarnes65331@memorialhermann.direct-ci.com
Organizations & group practices 2
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.
-
- Urology Physician
- Webster, TX
- NPI 1932125614
Hospital & facility affiliations 7
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba MHHS NW Radiation Therapy
- Radiology Clinic/Center
- Houston, TX
- NPI 1013948553
Hospital
-
dba MHHS Woodlands Outpatient Imaging System
- Radiology Clinic/Center
- The Woodlands, TX
- NPI 1275564858
Hospital
-
dba Memorial Hermann Outpatient Imaging-Southwest
- Radiology Clinic/Center
- Houston, TX
- NPI 1407959448
Hospital
-
dba MHHS Friendswood Imaging
- Radiology Clinic/Center
- Friendswood, TX
- NPI 1508896267
Hospital
-
dba MHHS Pearland Outpatient Imaging Center
- Radiology Clinic/Center
- Pearland, TX
- NPI 1669402335
Hospital
-
- General Acute Care Hospital
- Houston, TX
- NPI 1730132234
-
dba Memorial Hermann Houston Physicians' Hospital
- General Acute Care Hospital
- Webster, TX
- NPI 1285699835
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1122422400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1786579200000",
"number": "1033119516",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "930 FROSTWOOD DR STE 2.200",
"city": "HOUSTON",
"state": "TX",
"postal_code": "770242450"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "250 BLOSSOM ST",
"address_2": "SUITE 220",
"city": "WEBSTER",
"state": "TX",
"postal_code": "775984204",
"telephone_number": "281-332-0202",
"fax_number": "281-332-0202"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BARNES",
"first_name": "NATHANIEL",
"middle_name": "L",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-07-27",
"last_updated": "2026-08-13",
"certification_date": "2026-08-13",
"status": "A"
},
"taxonomies": [
{
"code": "208800000X",
"taxonomy_group": "",
"desc": "Urology",
"state": "TX",
"license": "K5799",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "044063801",
"state": "TX"
}
],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "NATHANIEL.BARNES@DIRECT.MEMORIALHERMANN.ORG",
"affiliation": "N",
"address_1": "250 Blossom St",
"address_2": "SUITE 220",
"city": "Webster",
"state": "TX",
"country_code": "US",
"postal_code": "775984204",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": []
}
Other providers in Webster, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 13, 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.