Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William M. Lewis, DO

Individual provider Internal Medicine Physician · NPI 1265401350

William M. Lewis, DO is an Internal Medicine in Austin, Texas. Graduated from New York College of Osteo Medicine of New York Institute of Technology in 2001, 25 years ago. Practices with The Austin Diagnostic Clinic PLLC, a 87-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Texas.

Years since qualifying
25
Trained at
New York College of Osteo Medicine of New York Institute of Technology
Licensed in
TX
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

12221 N Mopac Expy
Austin, TX 78758-2401
Phone: (512) 901-4009
Fax: (512) 901-3909
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence L8414 (TX)

Record details

NPI number1265401350
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 14, 2006
Last updated in NPPESFebruary 1, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolNEW YORK COLLEGE OF OSTEO MEDICINE OF NEW YORK INSTITUTE OF TECHNOLOGY
Graduated 2001 (25 years in practice)
Group practice The Austin Diagnostic Clinic Pllc — 87 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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