Dr. Mark Alan Zentner , PhD
Psychologist - Counseling β’ Austin, TX
100 W Dean Keeton St Fl 5
Austin, TX 787121091
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
100 W Dean Keeton St Fl 5
Austin, TX 787121091
What Public CMS Data Show
Psychologist - Counseling: NPPES taxonomy is a reported classification, not proof of board certification.
NPI first issued
2006
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, CMS release of October 2, 2026; Medicare.gov, βDoes your provider accept Medicare as full payment?β
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, CMS release of October 2, 2026.
Compared with the same specialty in Austin and Texas
96 active clinicians are listed under Psychologist - Counseling with a practice address in Austin, TX (531 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Austin
6.2% of these 96 clinicians have the CMS telehealth indicator.
13.5% of these 96 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2021-03-12NUCC 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.
Additional State Medicaid & Healthcare Payer Identifiers
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 100 W DEAN KEETON ST FL 5, AUSTIN, TX 787121091 (Tel: 5124756922)
Registered at 100 W DEAN KEETON ST FL 5, AUSTIN, TX 787121091 (Tel: 5124756922)
NPI status registered as active in NPPES database
Registered at 1605 WEST AVE STE B, AUSTIN, TX 787011555 (Tel: 5129659895)
Registered at 11605 GUNSMOKE CIR, AUSTIN, TX 787502035 (Tel: 5129659895)
Recorded as MARK ZENTNER, PH.D.
Psychologist (license number reported to NPPES: TX 31574)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Psychologist - Counselings in Austin
- Dr. Rebecca Stadtner, PhD
- Dr. Elizabeth Garrison, PhD
- Dr. Margaret Gardner, PhD
- Dr. Melba Vasquez, PhD
Mailing Address
100 W Dean Keeton St Fl 5
Austin, TX 787121091
Phone: 5124756922