William Mack Erwin, PH.D.
William Mack Erwin is a Clinical Psychologist based in San Antonio, TX with over 55 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Patients across TX can see William Mack Erwin, PH.D. in person in San Antonio or via virtual visit — no travel required. He graduated from Texas Tech University Health Science Center School of Medicine in 1971 and has 55+ years of clinical experience. A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to age...
Older · 5617dNPPES updated 2011-01-05 · verify NPI on CMS · Verify license at Texas Medical Board
Contact & Location
Practice Location
14815 San Pedro Ave, San Antonio, TX 78232-3708
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1971
Texas Tech University Health Sciences Center School of Medicine
55 years in practice
Senior practitioner
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.
Taxonomy: 103TC0700X
Education & Training
Texas Tech University Health Science Center School of Medicine (Class of 1971)
Virtual Psychology Care With William Mack Erwin
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with William Mack Erwin for follow-ups, medication reviews, and ongoing care — no travel to San Antonio required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about William Mack Erwin
NPI records show Dr. Erwin as active with telehealth listed in San Antonio, TX. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (210) 494-1991.
Sourced from CMS NPPES · OIG LEIE. See Data Methodology.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact William Mack Erwin
Practice Location
14815 San Pedro Ave, San Antonio, TX 78232-3708
Mailing Address
14815 San Pedro Ave, San Antonio, TX 78232-3708
This is a provider directory. Contact the office directly to schedule appointments.
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