OrganizationActive
John C. Williamson, MD
NPI 1578514311 · Specialist · Austin, TX
John C. Williamson, MD is a Specialist organization in Austin, TX (NPI 1578514311).
Provider details
- NPI number
- 1578514311
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Monica Moore, Billing Manager(512) 617-3522
Specialties & taxonomies
Other Service Providers
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
4007 James Casey St
C150
Austin, TX 78745-3369
Phone: (512) 617-3522
Fax: (512) 443-1062
Street-level locationGet directions
Mailing address
4007 James Casey St
Austin, TX 78745-3369
Other names (DBA / former)
- Doing business as
- Capitol Urology Associates
Registry dates
- Enumerated
- 2006-05-15
- Last updated
- 2008-08-14
Frequently asked questions
- What is John C. Williamson, MD's NPI number?
- John C. Williamson, MD's National Provider Identifier (NPI) is 1578514311, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is John C. Williamson, MD?
- John C. Williamson, MD is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is John C. Williamson, MD located?
- John C. Williamson, MD's practice location on file with NPPES is 4007 James Casey St, Austin, TX 78745-3369.
- What is John C. Williamson, MD's phone number?
- The practice phone number listed in the NPPES registry for John C. Williamson, MD is (512) 617-3522.
- Who is the authorized official for John C. Williamson, MD?
- The authorized official listed on John C. Williamson, MD's NPPES record is Monica Moore, Billing Manager. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is John C. Williamson, MD's NPI active?
- Yes — John C. Williamson, MD's NPI (1578514311) is active in the NPPES registry as of the last update on 2008-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.