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

John Ross Williams, MD

Individual provider Neurological Surgery Physician · NPI 1336536200

John Ross Williams, MD is a Neurosurgery in Houston, Texas. Qualified in 2015, 11 years ago. Practices with UT Physicians, a 203-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
11
Licensed in
MD
In the registry since
2015
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

6400 Fannin St Ste 2150
Houston, TX 77030-1524
Phone: (713) 486-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 600 N Wolfe Street, Baltimore, MD 21287-2128 — (410) 955-4424
  • 325 9th Ave Dept Of, Seattle, WA 98104-2420 — (206) 744-9389

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence D94083 (MD)

Record details

NPI number1336536200
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 18, 2015
Last updated in NPPESJune 8, 2023
Certification dateJune 8, 2023

Medicare enrollment

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

Medicare specialtyNEUROSURGERY
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Ut Physicians — 203 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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