Active NPI
Nicholas Gaston Callihan, M.D.
- Emergency Medicine Physician
- Houston, TX
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Emergency Medicine Physician
- License
- R6532
- Practice address
- 1635 North Loop W
Houston, TX 77008 - Phone
- (713) 867-2000
- NPI assigned
- Mar 23, 2015
- 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 |
|---|---|---|---|---|
| Emergency Medicine Physician | 207P00000X | R6532 | TX | Primary |
Addresses
Primary practice location
1635 North Loop W
Houston, TX 77008
Mailing address
909 Frostwood Dr
Houston, TX 77024-2301
Phone (832) 655-5665
Other practice location 1
6431 Fannin St
Suite JJL 431
Houston, TX 77030-1501
Phone (713) 500-7882
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
- Emergency Medicine
- Education
- Medical College of Georgia School of Medicine, 2015
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
1635 N Loop W
Memorial Hermann Emergency Physicians
Houston, TX 77008-1532
Phone (713) 338-6565
6411 Fannin St
Houston, TX 77030-1501
Phone (713) 704-4000
Hospital & facility affiliations
- Memorial Hermann Hospital System
Merit-based Incentive Payment System (MIPS)
- Final score
- 84.11 of 100
- Quality
- 69.15
- Promoting interoperability
- 100
- Improvement activities
- 40
- Cost
- 73.63
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| R6532 | TX | MD | Emergency Medicine Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Ut Physicians | Current | Accepting new patients | |
| Ut Physicians | Emergency Medicine | Current | Accepting new patients |
| Acs Primary Care Physicians Southwest, PA | Emergency Medicine | Current | Accepting new patients |
| Memorial Hermann Hospital Based Physician Group | Emergency Medicine | Current | Accepting new patients |
Locations
27800 NW Freeway
Cypress, TX 77433
Phone (346) 231-4000
6431 Fannin St
Ste Jjl
Houston, TX 77030
Phone (713) 500-7878
1140 Business Center Dr
Ste 201
Houston, TX 77043
Phone (713) 932-5752
6411 Fannin St
Houston, TX 77030
Phone (713) 500-6200
921 Gessner Rd
Houston, TX 77024
Phone (713) 242-3439
6410 Fannin St
Ste 500
Houston, TX 77030
Phone (713) 500-5714
1635 North Loop W
Houston, TX 77008
Phone (713) 867-2066
2555 Gulf Fwy S
#C1100
League City, TX 77573
2901 4th St
Longview, TX 75605
Phone (281) 371-1800
16100 South Fwy
Pearland, TX 77584
Phone (713) 413-5000
9250 Pinecroft Dr
Shenandoah, TX 77380
Phone (281) 364-2300
9250 Pinecroft Dr
#C
Shenandoah, TX 77380
Organizations & group practices 4
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.
-
- Emergency Medicine Physician
- Houston, TX
- NPI 1295363497
-
- Emergency Medicine Physician
- Gainesville, TX
- NPI 1538101019
-
- Health Educator
- Houston, TX
- NPI 1316534472
Hospital & facility affiliations 6
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Houston, TX
- NPI 1730132234
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1427068800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1726185600000",
"number": "1821482357",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "909 FROSTWOOD DR",
"city": "HOUSTON",
"state": "TX",
"postal_code": "770242301",
"telephone_number": "832-655-5665"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1635 NORTH LOOP W",
"city": "HOUSTON",
"state": "TX",
"postal_code": "77008",
"telephone_number": "713-867-2000"
}
],
"practiceLocations": [
{
"address_1": "6431 Fannin St",
"address_2": "Suite JJL 431",
"address_purpose": "LOCATION",
"city": "Houston",
"state": "TX",
"postal_code": "770301501",
"country_code": "US",
"telephone_number": "713-500-7882",
"fax_number": "713-500-0758",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "CALLIHAN",
"first_name": "NICHOLAS",
"middle_name": "GASTON",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2015-03-23",
"last_updated": "2024-09-13",
"certification_date": "2024-09-13",
"status": "A"
},
"taxonomies": [
{
"code": "207P00000X",
"taxonomy_group": "",
"desc": "Emergency Medicine",
"state": "TX",
"license": "R6532",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Houston, TX
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 13, 2024; 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.