What is Dennis Williams's NPI number?

Dennis Williams's National Provider Identifier (NPI) is 1992864755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Dennis Williams's specialty?

Dennis Williams is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).

Where is Dennis Williams located?

Dennis Williams's practice location on file with NPPES is 120 E Beauregard Ave, San Angelo, TX 76903-5919.

What is Dennis Williams's phone number?

The practice phone number listed in the NPPES registry for Dennis Williams is (325) 658-1511.

Does Dennis Williams accept Medicare?

Dennis Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Dennis Williams's NPI active?

Yes — Dennis Williams's NPI (1992864755) is active in the NPPES registry as of the last update on 2011-06-29.

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Dennis Williams, MD

NPI 1992864755 · Anesthesiology Physician · San Angelo, TX

Dennis Williams, MD is a Anesthesiology Physician provider in San Angelo, TX (NPI 1992864755).

Provider details

NPI number: 1992864755
Entity type: Individual
Primary specialty: Anesthesiology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: L7257 (TX)

Practice location

120 E Beauregard Ave

San Angelo, TX 76903-5919

Phone: (325) 658-1511

Fax: (325) 481-2165

Street-level locationGet directions

More TX providers

Mailing address

Po Box 22000

San Angelo, TX 76902-7200

Specialties & taxonomies

Anesthesiology PhysicianPrimary207L00000XLicense L7257 (TX)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(72/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
19 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
86 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. 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.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731	18	$136
Insertion of Artery Tube for Blood Sampling Or Infusion Through Skin36620	18	$43
Anesthesia for Other Procedure on Upper Abdomen00790	15	$246
Insertion of Non-Tunneled Central Venous Tube for Infusion (5 Years Or Older)36556	13	$80
Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811	11	$121
Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811	11	$119

Enumerated: 2006-12-07
Last updated: 2011-06-29

Frequently asked questions

What is Dennis Williams's NPI number?: Dennis Williams's National Provider Identifier (NPI) is 1992864755, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Dennis Williams's specialty?: Dennis Williams is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
Where is Dennis Williams located?: Dennis Williams's practice location on file with NPPES is 120 E Beauregard Ave, San Angelo, TX 76903-5919.
What is Dennis Williams's phone number?: The practice phone number listed in the NPPES registry for Dennis Williams is (325) 658-1511.
Does Dennis Williams accept Medicare?: Dennis Williams is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Dennis Williams's NPI active?: Yes — Dennis Williams's NPI (1992864755) is active in the NPPES registry as of the last update on 2011-06-29.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)