Active NPI
William Christopher Frey, MD
- Sleep Medicine (Internal Medicine) Physician
- Jbsa Lackland, TX
National Provider Identifier
1427049345
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Sleep Medicine (Internal Medicine) Physician
- License
- L4380
- Practice address
- 1100 Wilford Hall Loop
Jbsa Lackland, TX 78236 - Phone
- (201) 292-3322
- Fax
- (210) 292-4741
- NPI assigned
- Oct 31, 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pulmonary Disease Physician | 207RP1001X | L4380 | TX | |
| Sleep Medicine (Internal Medicine) Physician | 207RS0012X | L4380 | TX | Primary |
Addresses
Primary practice location
1100 Wilford Hall Loop
Jbsa Lackland, TX 78236
Mailing address
3551 Roger Brooke Dr
Jbsa Ft Sam Houston, TX 78234-4504
Phone (210) 539-9582
Other practice location 1
3551 Roger Brooke Dr
Jbsa Ft Sam Houston, TX 78234-4504
Phone (210) 539-9582
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
| Enrollment ID | State | Provider type | PAC ID | Details |
|---|---|---|---|---|
| I20120625000693 | TX | Order and Referring Only - Internal Medicine | 5395900302 |
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1130716800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1742515200000",
"number": "1427049345",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "3551 ROGER BROOKE DR",
"city": "JBSA FT SAM HOUSTON",
"state": "TX",
"postal_code": "782344504",
"telephone_number": "210-539-9582"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1100 WILFORD HALL LOOP",
"city": "JBSA LACKLAND",
"state": "TX",
"postal_code": "78236",
"telephone_number": "201-292-3322",
"fax_number": "210-292-4741"
}
],
"practiceLocations": [
{
"address_1": "3551 Roger Brooke Dr",
"address_purpose": "LOCATION",
"city": "Jbsa Ft Sam Houston",
"state": "TX",
"postal_code": "782344504",
"country_code": "US",
"telephone_number": "210-539-9582",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "FREY",
"first_name": "WILLIAM",
"middle_name": "CHRISTOPHER",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-31",
"last_updated": "2025-03-21",
"certification_date": "2025-03-21",
"status": "A"
},
"taxonomies": [
{
"code": "207RP1001X",
"taxonomy_group": "",
"desc": "Internal Medicine, Pulmonary Disease",
"state": "TX",
"license": "L4380",
"primary": false
},
{
"code": "207RS0012X",
"taxonomy_group": "",
"desc": "Internal Medicine, Sleep Medicine",
"state": "TX",
"license": "L4380",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}
Other providers in Jbsa Lackland, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 21, 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.