Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. STEVEN SEAN CALLAHAN PH.D.
NPI 1275677643
Psychologist - Clinical in Houston, TX

Q: What is Steven Callahan's NPI number?

The NPI number for Steven Callahan is 1275677643. It was assigned to this individual provider in the NPPES registry on February 17, 2007.

Q: What is Steven Callahan's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Steven Callahan was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since February 17, 2007PECOS EnrolledAccepts Medicare Assignment

2450 FONDREN RD STE 312, HOUSTON, TX 77063(713) 789-7560(713) 789-7351 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Steven Sean Callahan Ph.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. STEVEN SEAN CALLAHAN PH.D. (NPI 1275677643) is an individual clinical provider in Houston, Texas, licensed in Texas (22630) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, maintains a secondary practice location in Houston, and is a graduate of Other (1981).

NPPES Registry Identity

NPI1275677643

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. STEVEN SEAN CALLAHANCredential: PH.D.

Location Address2450 FONDREN RD STE 312Houston, TX 77063-2323

Mailing Address2450 Fondren Rd Ste 312Houston, TX 77063-2323 · (713) 789-7560 · Fax (713) 789-7351

Phone(713) 789-7560

Fax(713) 789-7351

Sole ProprietorNo

Medical School CMSOtherGraduated 1981

Enumeration DateFebruary 17, 2007

Last NPPES UpdateJuly 6, 2026

NPPES CertifiedJuly 6, 2026

✔ NPI 1275677643 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in TX · 22630

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Also ListedPsychologistTaxonomy 103T00000X · License 22630 (TX)

2450 FONDREN RD STE 312, Houston, TX 77063

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Secondary Practice Location 1

Location 14101 Greenbriar St, Suite 115Houston, TX 77098-5294 · Phone (713) 526-5149 · Fax (713) 526-0391

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Steven Sean Callahan Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3870407513

PECOS Enrollment IDI20101118001277, I20240411001206, I20240412003821, I20240501001362, I20240523001364, I20240529001556, I20240529003484, I20240621001995, I20241210003127, I20250204001447, I20250327002615

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Administration of psychological or neuropsychological test, each additional 30 minutes 96137

This procedure involves administering psychological or neuropsychological tests to evaluate your mental functions. Each additional 30 minutes allows for a more in-depth assessment of your cognitive abilities, emotions, and behavior. It's crucial for accurate diagnosis and treatment planning.

216 services74 patients

Evaluation of psychological test, each additional hour 96131

This service involves additional hours spent on assessing psychological tests. It helps to understand your mental health better, identifying any potential issues or disorders. It's a crucial step in creating an effective treatment plan.

148 services74 patients

Psychiatric diagnostic evaluation 90791

A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.

74 services74 patients

Evaluation of psychological test, first hour 96130

This procedure involves a professional assessing your mental health using standardized tests. It's the initial hour of a process that helps understand your emotional well-being and cognitive abilities. It's completely non-invasive and confidential.

74 services74 patients

Administration of psychological or neuropsychological test, first 30 minutes 96136

This procedure involves a health professional conducting a psychological or neuropsychological test. The first 30 minutes typically involve understanding your mental health or brain function through various assessments. This helps in diagnosing and treating mental health disorders effectively.

74 services74 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77063 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$176.98 typical visit price

range $58.24 – $176.98

Typical copayment $44.24 (range $14.56 – $44.24)

Most-billed visit code 99205

Established Patient

$102.71 typical visit price

range $18.60 – $143.93

Typical copayment $25.67 (range $4.65 – $35.98)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

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