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Charles Gabriel Hallmark

Psychologist • Spring, TX

Active NPI 1275025553 Individual Practitioner Male Practitioner
Practice location in NPPES

26010 Oak Ridge Dr Ste 107
Spring, TX 773801972

Call 2818150899 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

26010 Oak Ridge Dr Ste 107

Spring, TX 773801972

Telephone 2818150899

NPI first issued

2018

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Medicare assignment not listed

CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Compared with the same specialty in Spring and Texas

8 active clinicians are listed under Psychologist with a practice address in Spring, TX (2,141 in Texas).

Addresses are self-reported to NPPES and may be out of date.

Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo · Report an error.

Specialties & License Numbers Reported to NPPES

Psychologist Primary Specialty

NUCC Taxonomy Code: 103T00000X

A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

Psychologist - Counseling

NUCC Taxonomy Code: 103TC1900X

A psychologist who specializes in general practice and health service. It focuses on how people function both personally and in their relationships at all ages. Counseling psychology addresses the emotional, social, work, school and physical health concerns people may have at different stages in their lives, focusing on typical life stresses and more severe issues with which people may struggle as individuals and as a part of families, groups and organizations. Counseling psychologists help people with physical, emotional and mental health issues improve their sense of well-being, alleviate feelings of distress and resolve crises. They also provide assessment, diagnosis, and treatment of more severe psychological symptoms.

Psychologist - Cognitive & Behavioral

NUCC Taxonomy Code: 103TB0200X

A psychologist who reflects an experimental-clinical approach distinguished by use of principles of human learning and development and theories of cognitive processing to promote meaningful change in maladaptive human behavior and thinking.

Psychologist - Intellectual & Developmental Disabilities

NUCC Taxonomy Code: 103TM1800X

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Texas Medical Board.
Look Up on State Board Site

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

2 listed
Dr. Kennetha Frye , PhD

Psychologist - Clinical

NPI 1922551431

Doctor of Philosophy (Ph.D.)

Dr. Allison Grodzki , PsyD

Psychologist - Clinical

NPI 1770969305

Doctor of Psychology (Psy.D.)

Career & Practice History

NPI enumerated June 03, 2018.

No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from June 2018 to August 2026.

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NPI Administrative Meta

NPI Number: 1275025553
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: June 03, 2018
Last Update: June 03, 2018
Sole Proprietor: Yes

Mailing Address

1660 W T C Jester Blvd Apt 211

Houston, TX 770083263

Phone: 9175095103

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.