Active NPI 1992864755 Individual Practitioner Male Practitioner

Dr. Dennis Todd Williams , MD

Anesthesiology • San Angelo, TX

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Dennis Williams, MD is a certified Anesthesiology practicing in San Angelo, TX. With approximately 30 years of clinical experience since graduating from Baylor College Of Medicine in 1996, Dr. Williams delivers high-quality medical care to the local community at 120 E BEAUREGARD AVE.

Dr. Williams is affiliated with Shannon Clinic and accepts Medicare assignment.

Frequently performed procedures and clinical services include insertion of artery tube for blood sampling or infusion through skin, anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope, anesthesia for procedure in upper abdomen including use of an endoscope. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

120 E Beauregard Ave

San Angelo, TX 769035919

Telephone 3256581511

Fax 3254812165

Associated Practice Facility / Clinic

🏢 Shannon Clinic Facility NPI 1770587149

Medicare Profile & Education

Medical School

Baylor College Of Medicine

Graduation Year

1996

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Anesthesiology in San Angelo, TX

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

30 Yrs +6.2 yrs vs City Avg

City Avg: 23.8 Yrs

State Avg: 24.9 Yrs

Regional Practice Density

31 Specialists

Practicing in San Angelo, TX (4818 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

60.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Williams (30 Years) 30 Yrs

San Angelo Specialty Average (23.8 Years) 23.8 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin	18	17	$309.00	$42.70
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	18	17	$137.28	$136.05
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	15	15	$309.10	$245.71
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	13	13	$850.00	$80.06
00811 Anesthesia for procedure on large bowel using an endoscope	11	11	$153.09	$121.25
00811 Anesthesia for procedure on large bowel using an endoscope	11	11	$120.17	$118.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
36620 Insertion of artery tube for blood sampling or infusion through skin	27	27	$309.00	$43.14
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	25	22	$131.67	$125.56
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	16	16	$850.00	$81.21
00142 Anesthesia for lens surgery	13	13	$132.29	$103.62
00811 Anesthesia for procedure on large bowel using an endoscope	13	13	$120.63	$115.06
00567 Anesthesia for heart artery bypass grafting on heart-lung machine	11	11	$743.04	$708.56

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	33	32	$135.10	$130.21
36620 Insertion of artery tube for blood sampling or infusion through skin	28	28	$309.00	$42.95
00142 Anesthesia for lens surgery	27	27	$143.22	$108.65
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	19	19	$850.00	$81.35
00811 Anesthesia for procedure on large bowel using an endoscope	17	17	$141.02	$115.29
00811 Anesthesia for procedure on large bowel using an endoscope	16	16	$139.31	$113.80
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	15	15	$161.00	$27.12
01402 Anesthesia for procedure for total knee joint replacement	13	13	$373.89	$292.91
00812 Anesthesia for exam of colon using an endoscope	12	12	$95.40	$91.16
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	12	12	$325.44	$313.33
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	11	11	$126.65	$122.26
64447 Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve)	11	11	$350.00	$38.82
00567 Anesthesia for heart artery bypass grafting on heart-lung machine	11	11	$752.47	$722.86

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00142 Anesthesia for lens surgery	38	38	$124.32	$111.10
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	24	22	$145.69	$124.35
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	24	24	$139.09	$123.75
00811 Anesthesia for procedure on large bowel using an endoscope	20	20	$116.86	$113.69
36620 Insertion of artery tube for blood sampling or infusion through skin	19	19	$309.00	$43.78
00813 Anesthesia for procedure on small and large bowel using an endoscope	16	16	$154.84	$150.78
00811 Anesthesia for procedure on large bowel using an endoscope	15	15	$143.38	$115.41
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	14	14	$284.97	$277.65
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	14	14	$161.00	$30.79
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	12	12	$850.00	$82.67
00813 Anesthesia for procedure on small and large bowel using an endoscope	12	12	$149.40	$145.56

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	39	39	$136.71	$137.96
36620 Insertion of artery tube for blood sampling or infusion through skin	33	32	$309.00	$45.24
00142 Anesthesia for lens surgery	25	25	$119.67	$120.40
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	22	22	$850.00	$86.19
00813 Anesthesia for procedure on small and large bowel using an endoscope	16	16	$164.12	$166.15
00567 Anesthesia for heart artery bypass grafting on heart-lung machine	13	13	$746.94	$752.13
00811 Anesthesia for procedure on large bowel using an endoscope	13	13	$123.88	$125.14
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	13	13	$292.98	$295.61
00811 Anesthesia for procedure on large bowel using an endoscope	12	12	$143.13	$114.87
00813 Anesthesia for procedure on small and large bowel using an endoscope	11	11	$157.42	$159.09
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	11	11	$189.87	$149.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	45	43	$433.69	$132.19
00142 Anesthesia for lens surgery	30	30	$364.47	$109.76
36620 Insertion of artery tube for blood sampling or infusion through skin	29	29	$309.00	$44.81
00811 Anesthesia for procedure on large bowel using an endoscope	25	25	$389.48	$120.40
00811 Anesthesia for procedure on large bowel using an endoscope	19	19	$398.63	$119.61
00142 Anesthesia for lens surgery	17	17	$375.94	$112.25
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	16	15	$913.94	$282.51
00300 Anesthesia for other procedure on skin, muscles, or nerves of head, neck, and upper back	15	15	$605.27	$187.14
00813 Anesthesia for procedure on small and large bowel using an endoscope	14	14	$515.50	$159.44
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	14	14	$580.00	$173.04
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	13	12	$464.69	$143.64
36556 Insertion of non-tunneled central venous tube for infusion (5 years or older)	12	12	$850.00	$85.15
00813 Anesthesia for procedure on small and large bowel using an endoscope	11	11	$512.91	$158.64

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00142 Anesthesia for lens surgery	43	42	$378.65	$115.50
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	40	39	$427.70	$130.47
00142 Anesthesia for lens surgery	21	21	$350.33	$103.85
00811 Anesthesia for procedure on large bowel using an endoscope	19	19	$411.16	$125.61
00811 Anesthesia for procedure on large bowel using an endoscope	18	18	$401.33	$118.33
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	17	17	$892.71	$272.31
00813 Anesthesia for procedure on small and large bowel using an endoscope	17	17	$504.82	$154.10
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	15	15	$521.27	$158.47
00400 Anesthesia for procedure on skin of arms, legs, or trunk	13	11	$424.31	$129.43
00300 Anesthesia for other procedure on skin, muscles, or nerves of head, neck, and upper back	13	13	$708.62	$216.16
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	12	12	$161.00	$31.89
00731 Anesthesia for procedure on esophagus, stomach, and/or upper small bowel using an endoscope	11	11	$420.00	$128.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
00142 Anesthesia for lens surgery	44	44	$134.19	$113.84
00810 Anesthesia for procedure on lower intestine using an endoscope	40	40	$368.20	$155.38
00790 Anesthesia for procedure in upper abdomen including use of an endoscope	32	32	$450.18	$266.10
00740 Anesthesia for procedure on gastrointestinal tract using an endoscope	30	30	$290.88	$145.30
01936 Anesthesia for X-ray procedure (accessed through the skin) on spine and spinal cord	27	27	$217.78	$170.56
00810 Anesthesia for procedure on lower intestine using an endoscope	17	17	$223.56	$145.71
76942 Ultrasonic guidance imaging supervision and interpretation for insertion of needle	16	16	$48.40	$31.73
64415 Injection of anesthetic agent, brachial (arm) nerve bundle	12	12	$144.92	$64.23
36620 Insertion of artery tube for blood sampling or infusion through skin	12	12	$72.95	$47.49
00670 Anesthesia for procedure on spine and spinal cord	11	11	$837.21	$478.29

Medical Specialties & State Licenses

Anesthesiology Primary Specialty

NUCC Taxonomy Code: 207L00000X

State License TX L7257

An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

200057410A (OK)

Commercial Insurance / Payer ID Bcbs

8CU463 (TX)

Commercial Insurance / Payer ID Group Npi

1023177888

Hospital & Practice Group Affiliations

Shannon Clinic

120 E Harris Ave, San Angelo, TX 769035904

Phone: 3257476741

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Maegin Carlile , FNP

Nurse Practitioner

NPI 1003168055

Family Nurse Practitioner

Dr. Irvin Zeitler , DO

Family Medicine

NPI 1003856451

Doctor of Osteopathic Medicine (D.O.)

Dr. Charles Greeson , MD

Dermatology

NPI 1003919994

Doctor of Medicine (M.D.)

Dr. Robert Carsner , MD

Internal Medicine

NPI 1013901032

Doctor of Medicine (M.D.)

Dr. Scott Westmoreland , DPM

Podiatrist

NPI 1023095783

Doctor of Podiatric Medicine

Dr. Leslie Hutchins , MD

Neurological Surgery

NPI 1023278660

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active June 29, 2011

NPI status registered as active in NPPES database

📍

Updated Practice Location June 29, 2011

Registered at 120 E BEAUREGARD AVE, SAN ANGELO, TX 769035919 (Tel: 3256581511)

📍

Updated Business Mailing Address June 29, 2011

Registered at PO BOX 22000, SAN ANGELO, TX 769027200 (Tel: 3256581511)

👤

Provider Name / Credentials Updated June 29, 2011

Recorded as DENNIS WILLIAMS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) June 29, 2011

Anesthesiology (License #L7257 in TX)

🟢

Initial NPI Registration & Enumeration December 07, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1992864755

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: December 07, 2006

Last Update: June 29, 2011

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 22000

San Angelo, TX 769027200

Phone: 3256581511

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.