Active NPI
Steven Sean Callahan, PH.D.
- Clinical Psychologist
- Houston, TX
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Psychologist
- License
- 22630
- Practice address
- 2450 Fondren Rd Ste 312
Houston, TX 77063-2323 - Phone
- (713) 789-7560
- Fax
- (713) 789-7351
- NPI assigned
- Feb 17, 2007
- 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 |
|---|---|---|---|---|
| Psychologist | 103T00000X | 22630 | TX | |
| Clinical Psychologist | 103TC0700X | 22630 | TX | Primary |
Addresses
Primary practice location
2450 Fondren Rd Ste 312
Houston, TX 77063-2323
Mailing address
2450 Fondren Rd Ste 312
Houston, TX 77063-2323
Phone (713) 789-7560
Other practice location 1
4101 Greenbriar St
Suite 115
Houston, TX 77098-5294
Phone (713) 526-5149
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in TX, AL, IN, FL, CO, KY, OH, GA, NE, OK, AZ
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: No
- Power mobility devices: No
- Hospice: No
Enrollment records 11
Care Compare profile
Medicare Care Compare- Specialty
- Clinical Psychologist
- Education
- Other, 1981
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Telehealth
- Offers telehealth services
- Group practices
Practice addresses (Care Compare)
13340 California St
Suite 101
Omaha, NE 68154-5255
Phone (281) 364-0067
1830 N Bernard Cir
Mesa, AZ 85207-4377
Phone (281) 364-0067
2002 12TH Ave NW
Suite B
Ardmore, OK 73401-1206
Phone (281) 364-0067
2300 Manchester Expressway
Suite 006
Columbus, GA 31904
Phone (281) 364-0067
2450 Fondren Rd
Suite 312
Houston, TX 77063-2323
Phone (713) 789-7560
25810 Oak Ridge Dr
The Woodlands, TX 77380-2016
Phone (281) 364-0067
455 S Landmark Ave
Bloomington, IN 47403-5004
Phone (281) 364-0067
5040 Forest Dr
Suite 240
New Albany, OH 43054-8166
Phone (281) 364-0067
5175 Italia CT
Ave Maria, FL 34142-9614
Phone (281) 364-0067
602 Cameron CT
Auburn, AL 36830-2997
Phone (281) 364-0067
6025 Delmonico Dr
Colorado Springs, CO 80919-2251
Phone (281) 364-0067
6801 Dixie Hwy
Suite 135
Louisville, KY 40258-3952
Phone (281) 364-0067
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 17957 | FL | MD | Occupational Therapy Assistant |
| 17957 | CO | MD | Physical Therapist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| CPF SJN Outpatient, LLC | Psychologist | Current | Accepting new patients |
| M. Waisman, M.D.P.a. | Past | Accepting new patients | |
| M. Waisman, M.D.,P.a. | Past | Accepting new patients |
Locations
2450 Fondren Rd
Ste 312
Houston, TX 77063
Phone (713) 914-0277
Networks
- Freedom Health HMO Network
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.
-
- Clinical Psychologist
- Houston, TX
- NPI 1730830001
-
- Clinical Psychologist
- The Woodlands, TX
- NPI 1528088077
AL, AZ, CO, FL, GA, IN, KY, NE, OH, OK
-
- Dermatology Physician
- Houston, TX
- NPI 1164711032
-
- Dermatology Physician
- Aspen, CO
- NPI 1265723340
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1171670400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783296000000",
"number": "1275677643",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "2450 FONDREN RD STE 312",
"city": "HOUSTON",
"state": "TX",
"postal_code": "770632323",
"telephone_number": "713-789-7560",
"fax_number": "713-789-7351"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "2450 FONDREN RD STE 312",
"city": "HOUSTON",
"state": "TX",
"postal_code": "770632323",
"telephone_number": "713-789-7560",
"fax_number": "713-789-7351"
}
],
"practiceLocations": [
{
"address_1": "4101 Greenbriar St",
"address_2": "Suite 115",
"address_purpose": "LOCATION",
"city": "Houston",
"state": "TX",
"postal_code": "770985294",
"country_code": "US",
"telephone_number": "713-526-5149",
"fax_number": "713-526-0391",
"country_name": "United States",
"address_type": "DOM"
}
],
"basic": {
"last_name": "CALLAHAN",
"first_name": "STEVEN",
"middle_name": "SEAN",
"name_prefix": "Dr.",
"credential": "PH.D.",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2007-02-17",
"last_updated": "2026-07-06",
"certification_date": "2026-07-06",
"status": "A"
},
"taxonomies": [
{
"code": "103T00000X",
"taxonomy_group": "",
"desc": "Psychologist",
"state": "TX",
"license": "22630",
"primary": false
},
{
"code": "103TC0700X",
"taxonomy_group": "",
"desc": "Psychologist, Clinical",
"state": "TX",
"license": "22630",
"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 Jul 6, 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.