Active NPI 1528088960 Individual Practitioner Male Practitioner

Dr. William Campbell Wallace , MD

Surgery • Laguna Hills, CA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. William Wallace, MD is a certified Surgery practicing in Laguna Hills, CA. With approximately 30 years of clinical experience since graduating from University Of Vermont College Of Medicine in 1996, Dr. Wallace delivers high-quality medical care to the local community at 24411 HEALTH CENTER DR.

Dr. Wallace is affiliated with South Orange County Surgical Medical Group Inc and accepts Medicare assignment.

Frequently performed procedures and clinical services include subsequent hospital care with moderate levelof medical decision making, if using time, at least, established patient outpatient office visit, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

24411 Health Center Dr
Suite 350

Laguna Hills, CA 926533651

Telephone 9494577900

Fax 9495888719

Associated Practice Facility / Clinic

🏢 Saddleback Memorial Medical Center Facility NPI 1841275070

Medicare Profile & Education

Medical School

University Of Vermont College Of Medicine

Graduation Year

1996

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Laguna Hills, CA

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

30 Yrs +6.2 yrs vs City Avg

City Avg: 23.8 Yrs

State Avg: 27.4 Yrs

Regional Practice Density

15 Specialists

Practicing in Laguna Hills, CA (3346 Statewide)

Telehealth Adoption Rate

6.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

57.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Wallace (30 Years) 30 Yrs

Laguna Hills 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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	84	40	$160.00	$81.92
99213 Established patient office or other outpatient visit, typically 15 minutes	76	48	$200.00	$98.86
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	70	70	$360.00	$180.35
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	55	51	$420.00	$180.07
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	48	31	$220.00	$122.91
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	38	33	$282.00	$139.36
99231 Follow-up hospital inpatient care per day, typically 15 minutes	27	21	$80.00	$51.32
55520 Removal of spermatic cord growth	25	25	$988.80	$261.86
49505 Repair of groin hernia (5 years or older)	19	19	$1273.68	$575.87
46600 Diagnostic examination of the anus using an endoscope	17	12	$200.00	$134.92
49507 Repair of trapped groin hernia patient age 5 years or older	14	14	$1874.29	$658.04
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	13	13	$440.00	$237.47
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	13	13	$1500.00	$748.11
45300 Diagnostic examination of rectum and large bowel using an endoscope	11	11	$280.00	$27.56

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	90	90	$360.00	$178.97
99213 Established patient office or other outpatient visit, typically 15 minutes	67	51	$197.01	$99.65
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	60	59	$420.00	$184.89
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	60	35	$220.00	$126.83
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	51	31	$160.00	$82.68
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	37	36	$279.73	$140.58
55520 Removal of spermatic cord growth	31	31	$983.23	$275.13
49507 Repair of trapped groin hernia patient age 5 years or older	25	25	$1476.80	$641.99
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	20	20	$440.00	$239.87
46600 Diagnostic examination of the anus using an endoscope	17	11	$200.00	$140.04
49505 Repair of groin hernia (5 years or older)	15	15	$1393.33	$579.58
99231 Follow-up hospital inpatient care per day, typically 15 minutes	14	12	$80.00	$52.59

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	71	71	$360.00	$182.50
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	67	66	$420.00	$207.29
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	59	33	$220.00	$108.24
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	57	57	$440.00	$233.17
99213 Established patient office or other outpatient visit, typically 15 minutes	56	45	$160.00	$99.38
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	54	33	$160.00	$75.27
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	40	38	$240.00	$140.89
55520 Removal of spermatic cord growth	28	27	$972.86	$259.07
49507 Repair of trapped groin hernia patient age 5 years or older	25	25	$1676.40	$624.73
46600 Diagnostic examination of the anus using an endoscope	17	13	$200.00	$143.33
49505 Repair of groin hernia (5 years or older)	17	17	$1358.82	$616.71
47562 Removal of gallbladder using an endoscope	13	13	$1580.00	$710.40
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	13	13	$320.00	$182.86

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	110	48	$220.00	$110.45
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	66	63	$420.00	$214.15
99213 Established patient office or other outpatient visit, typically 15 minutes	53	41	$162.36	$101.43
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	53	32	$160.00	$76.84
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	46	$240.00	$143.61
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	49	49	$360.00	$184.79
49507 Repair of trapped groin hernia patient age 5 years or older	27	27	$1349.63	$640.37
55520 Removal of spermatic cord growth	27	27	$960.00	$251.10
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	25	25	$440.00	$243.59
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	25	25	$285.00	$124.38

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	72	54	$160.00	$83.15
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	59	58	$420.00	$216.96
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	57	57	$360.00	$182.01
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	36	27	$160.00	$77.09
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	34	20	$220.00	$113.69
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	28	28	$440.00	$229.37
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	27	27	$240.00	$121.42
93880 Ultrasound of both sides of head and neck blood flow	13	12	$600.00	$234.14
49505 Repair of groin hernia (5 years or older)	13	13	$1269.23	$581.47

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	90	90	$360.00	$178.52
99213 Established patient office or other outpatient visit, typically 15 minutes	71	60	$160.00	$80.48
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	67	44	$160.00	$77.39
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	62	61	$420.00	$215.26
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	42	38	$240.00	$119.23
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	36	26	$220.00	$110.61
93880 Ultrasound of both sides of head and neck blood flow	18	15	$600.00	$232.71
49505 Repair of groin hernia (5 years or older)	17	17	$1144.12	$551.77
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	14	14	$440.00	$223.57
49507 Repair of trapped groin hernia patient age 5 years or older	12	12	$1486.67	$629.44

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	74	61	$160.00	$79.53
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	65	65	$360.00	$179.08
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	64	61	$427.19	$211.60
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	43	33	$220.00	$101.01
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	35	33	$240.00	$118.35
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	30	20	$160.00	$75.14
93880 Ultrasound of both sides of head and neck blood flow	20	20	$600.00	$225.82
49568 Placement of mesh to repair incisional or abdominal hernia	12	12	$525.00	$261.85

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	90	74	$160.00	$79.44
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	77	77	$360.00	$173.81
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	66	64	$420.00	$217.03
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	47	35	$220.00	$111.72
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	28	23	$160.00	$77.31
93880 Ultrasound of both sides of head and neck blood flow	25	22	$600.00	$225.29
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	18	18	$240.00	$107.44
49505 Repair of groin hernia (5 years or older)	17	17	$1051.76	$504.52
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	13	11	$100.00	$48.91
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	11	11	$440.00	$225.33

Medical Specialties & State Licenses

CMS Verified: 2026-02-09

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License CA A66100

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Hospital & Practice Group Affiliations

South Orange County Surgical Medical Group Inc

24411 Health Ctr Dr, Laguna Hills, CA 926533687

Phone: 9494577900

Practice Associates & Co-Workers

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

14 Associated Practitioners

Dr. Wang Teng , MD

Surgery - Vascular Surgery

NPI 1023034568

Doctor of Medicine (M.D.)

Robbin Gonzales , PA-C

Physician Assistant - Surgical

NPI 1033481809

Physician Assistant (Certified)

Dr. Blake Ashley , MD

Surgery

NPI 1235150079

Doctor of Medicine (M.D.)

Dr. Rahul Sharma , DO

Surgery - Vascular Surgery

NPI 1356634489

Doctor of Osteopathic Medicine (D.O.)

Robert Duensing

Surgery - Vascular Surgery

NPI 1366462756

Dr. Katherine Stern , MD

Surgery

NPI 1376074740

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

7 Historical Events

📍

Updated Business Mailing Address February 09, 2026

Registered at 24411 HEALTH CENTER DR STE 350, LAGUNA HILLS, CA 926533687 (Tel: 9494577900)

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 24411 HEALTH CENTER DR, SUITE 350, LAGUNA HILLS, CA 926533651 (Tel: 9494577900)

📍

Updated Business Mailing Address July 08, 2007

Registered at 24411 HEALTH CENTER DR, SUITE 350, LAGUNA HILLS, CA 926533651 (Tel: 9494577900)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as WILLIAM WALLACE, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Surgery (License #A66100 in CA)

🟢

Initial NPI Registration & Enumeration July 20, 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: 1528088960

Entity Type:

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

Enumeration Date: July 20, 2006

Last Update: February 09, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

24411 Health Center Dr Ste 350

Laguna Hills, CA 926533687

Phone: 9494577900

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.