Individual provider Active NPI

Steven Sean Callahan, PH.D.

  • Clinical Psychologist
  • Houston, TX
National Provider Identifier
1275677643
Registry record updated Jul 6, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Clinical PsychologistTaxonomy code 103TC0700X
License
22630 Issued in TX
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

Updated by the provider on Jul 6, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
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, AZ11 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 11

Enrollment IDStateProvider typePAC IDDetails
I20101118001277 TX Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 2 organizations
I20240411001206 AL Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20240412003821 IN Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20240501001362 FL Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20240523001364 CO Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20240529001556 KY Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20240529003484 OH Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20240621001995 GA Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20241210003127 NE Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20250204001447 OK Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization
I20250327002615 AZ Practitioner - Clinical Psychologist 3870407513 Reassigns benefits to 1 organization

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
Dr Glenn J Bricken and Assoc P CGroup PAC ID 8426038027, 8 clinicians
CPF SJN Outpatient LLCGroup PAC ID 0749637163, 24 clinicians

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

LicenseStateTypeSpecialty
17957FLMDOccupational Therapy Assistant
17957COMDPhysical Therapist

Practice roles

OrganizationSpecialtyStatusNew patients
CPF SJN Outpatient, LLC Psychologist CurrentSince Jun 18, 2025 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.

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

Verify at the official NPI Registry.