NPI age
17 years
Enumerated 2008-06-12
● Active
Type 1 · Individual
DR. Mary Ellen McNaughton-Cassill, PH.D.
McNaughton-Cassill is 1 of 401 psychologist providers in San Antonio and 1 of 3401 in Texas.
Primary specialty
Psychologist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2008-06-12
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 3401 active psychologist providers in Texas.
NPI age
17 years
↑ 2 yr above median (15 yr)
State licenses
1 state
7% of peers hold multiple states
Subspecialties
0
26% of peers hold subspecialties
NPI lifetime · 2008 → 2026
2008-06Enumerated in NPPES
2008
2026
Where they practice
Practice location
325 E Sonterra Blvd, Suite 230
San Antonio, TX 782584054
Mailing address
325 E Sonterra Blvd, Suite 230
San Antonio, TX 782584054
Specialties
-
Psychologist PrimaryA 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...
Practice context
Part of a multi-provider practice. 15 other active providers share this practice address in NPPES.
Recently enumerated nearby: 1 new psychologist provider has been added in San Antonio in the last 180 days.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.