Margaret Williams, M.D.
NPI 1780611384 · Psychiatry Physician · Laredo, TX
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Williams, M.D. is a Psychiatry Physician provider in Laredo, TX (NPI 1780611384).
Provider details
- NPI number
- 1780611384
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G7742 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-06-27
- Last updated
- 2007-07-08
Frequently asked questions
- What is Margaret Williams's NPI number?
- Margaret Williams's National Provider Identifier (NPI) is 1780611384, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Williams's specialty?
- Margaret Williams is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Williams located?
- Margaret Williams's practice location on file with NPPES is 1500 Pappas St, Laredo, TX 78041-1701.
- What is Margaret Williams's phone number?
- The practice phone number listed in the NPPES registry for Margaret Williams is (956) 794-3000.
- Does Margaret Williams accept Medicare?
- Margaret Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Williams's NPI active?
- Yes — Margaret Williams's NPI (1780611384) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.