NPI age
14 years
Enumerated 2012-02-09
● Active
Type 1 · Individual
DR. Lillian MacOn Ringsdorf, MD, MPH
Ringsdorf is 1 of 10 preventive medicine providers in Austin and 1 of 154 in Texas.
Primary specialty
Preventive Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2012-02-09
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 154 active preventive medicine providers in Texas.
NPI age
14 years
↓ 2 yr below median (16 yr)
State licenses
1 state
8% of peers hold multiple states
Subspecialties
0
33% of peers hold subspecialties
NPI lifetime · 2012 → 2026
2012-02Enumerated in NPPES
2012
2026
Where they practice
Practice location
1100 W 49th St
Austin, TX 787563101
Mailing address
2722 Oak Haven Dr
San Marcos, TX 786665088
Specialties
-
Preventive Medicine PrimaryPublic health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with...
Practice context
Part of a multi-provider practice. 12 other active providers share this practice address in NPPES.
Recently enumerated nearby: 2 new preventive medicine providers have been added in Austin 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.