Active NPI 1003869397 Individual Practitioner Male Practitioner

Dr. Brian Daniel Gerrelts , MD

Surgery • Waterloo, IA

Professional Overview & Biography Verified Profile Summary

Dr. Brian Gerrelts, MD is a registered healthcare professional specializing in Surgery in Waterloo, IA. Practice services are available at 1753 W RIDGEWAY AVE under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, new patient outpatient office visit, follow-up hospital inpatient care per day. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1753 W Ridgeway Ave
Ste 107

Waterloo, IA 507014588

Telephone 3198335907

Fax 3198335908

Associated Practice Facility / Clinic

🏢 Cedar Valley Medical Specialists Pc Facility NPI 1073567780

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Waterloo, IA

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 18.9 Yrs

State Avg: 26.0 Yrs

Regional Practice Density

18 Specialists

Practicing in Waterloo, IA (452 Statewide)

Telehealth Adoption Rate

5.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

63.1% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

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
99213 Established patient office or other outpatient visit, typically 15 minutes	64	54	$191.19	$83.53
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	64	54	$272.12	$118.15
99213 Established patient office or other outpatient visit, typically 15 minutes	21	15	$198.48	$60.74
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	14	$292.74	$89.91

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	63	54	$179.35	$83.70
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	48	$265.14	$117.28
99213 Established patient office or other outpatient visit, typically 15 minutes	24	20	$189.85	$61.55
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	11	11	$384.27	$154.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	79	70	$240.11	$120.20
99213 Established patient office or other outpatient visit, typically 15 minutes	56	50	$167.23	$85.03
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	12	12	$267.38	$104.88

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	75	67	$157.48	$86.40
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	48	44	$224.62	$122.87
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	40	34	$150.44	$53.02
99231 Follow-up hospital inpatient care per day, typically 15 minutes	28	19	$99.00	$36.44
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	27	27	$267.27	$105.84
99221 Initial hospital inpatient care per day, typically 30 minutes	25	25	$239.00	$94.65
99202 New patient office or other outpatient visit, typically 20 minutes	19	19	$181.81	$68.60
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	16	14	$180.00	$68.02
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	14	13	$149.00	$5.05
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	13	13	$4786.00	$1419.32
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	11	11	$2373.73	$663.81
47562 Removal of gallbladder using an endoscope	11	11	$2168.00	$526.67

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99202 New patient office or other outpatient visit, typically 20 minutes	86	86	$182.00	$70.75
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	74	59	$106.00	$42.11
99231 Follow-up hospital inpatient care per day, typically 15 minutes	50	28	$99.00	$37.66
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	36	36	$180.00	$68.02
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	33	33	$149.00	$5.21
99213 Established patient office or other outpatient visit, typically 15 minutes	30	30	$158.00	$70.82
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	23	23	$55.00	$17.42
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	21	21	$524.00	$191.40
99221 Initial hospital inpatient care per day, typically 30 minutes	20	20	$239.00	$97.09
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	20	20	$2279.75	$655.71
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	20	20	$1399.00	$120.22
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	20	19	$670.00	$212.90
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	17	17	$1291.18	$178.86
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	17	16	$626.00	$194.53
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	17	17	$1313.24	$178.13
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	16	16	$1595.00	$245.38
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	15	15	$270.00	$101.35
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	14	14	$3198.00	$309.25
76536 Ultrasound of head and neck	12	12	$296.67	$105.78
44204 Partial removal of large bowel using an endoscope	11	11	$4616.00	$1446.99
49505 Repair of groin hernia (5 years or older)	11	11	$1545.00	$486.81

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99202 New patient office or other outpatient visit, typically 20 minutes	101	101	$176.74	$70.91
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	75	72	$103.27	$41.30
99231 Follow-up hospital inpatient care per day, typically 15 minutes	54	31	$96.78	$37.18
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	33	33	$149.00	$8.02
99221 Initial hospital inpatient care per day, typically 30 minutes	30	28	$234.97	$95.06
99213 Established patient office or other outpatient visit, typically 15 minutes	27	27	$152.96	$69.30
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	26	26	$149.00	$5.16
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	26	26	$2155.04	$637.24
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	24	22	$670.00	$245.12
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	23	23	$1150.00	$176.15
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	23	23	$55.00	$17.78
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$264.94	$100.56
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	17	17	$524.00	$132.81
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	17	17	$1150.00	$176.00
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	16	14	$626.00	$196.12
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	16	16	$3198.00	$316.25
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	15	15	$1150.00	$176.00
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	15	15	$175.20	$68.89
76536 Ultrasound of head and neck	14	14	$255.00	$105.81
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	13	13	$1585.00	$244.41
11403 Removal of noncancer skin growth of body, arms, or legs, 2.1-3.0 cm	11	11	$449.00	$89.23
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	11	11	$4786.00	$1308.17
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	11	11	$1022.00	$90.45

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99202 New patient office or other outpatient visit, typically 20 minutes	169	169	$173.00	$69.65
99231 Follow-up hospital inpatient care per day, typically 15 minutes	121	44	$94.00	$37.14
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	83	71	$101.00	$40.52
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	42	41	$670.00	$222.46
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	41	40	$149.00	$5.14
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	41	40	$524.00	$131.17
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	39	39	$149.00	$5.15
99213 Established patient office or other outpatient visit, typically 15 minutes	36	35	$150.00	$68.24
99221 Initial hospital inpatient care per day, typically 30 minutes	33	33	$228.00	$93.28
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	32	32	$1150.00	$176.74
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	32	32	$171.00	$69.05
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	26	26	$1022.00	$95.97
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	25	25	$1150.00	$176.60
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	25	23	$626.00	$199.36
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	25	25	$55.00	$17.76
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	25	25	$2219.00	$641.24
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	21	21	$547.00	$223.83
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare	21	21	$1585.00	$244.93
76536 Ultrasound of head and neck	18	17	$255.00	$107.92
49585 Repair of hernia at navel (5 years or older)	18	17	$1320.00	$352.13
49505 Repair of groin hernia (5 years or older)	18	18	$1545.00	$477.74
45384 Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery	18	18	$1388.00	$169.11
45380 Biopsy of large bowel using an endoscope	16	16	$1403.00	$182.30
12041 Intermediate repair of wound of neck, hands, feet, or genitals, 2.5 cm or less	15	15	$689.00	$131.58
76937 Ultrasonic guidance for blood vessel access	14	14	$61.00	$13.82
G0105 Colorectal cancer screening; colonoscopy on individual at high risk	13	13	$1150.00	$163.02
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	13	13	$3198.00	$304.96
36558 Insertion of tunneled central venous tube for infusion (5 years or older)	12	12	$1830.00	$248.37
11604 Removal of cancer skin growth of body, arms, or legs, 3.1-4.0 cm	12	12	$695.00	$290.56
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	11	11	$257.00	$100.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99202 New patient office or other outpatient visit, typically 20 minutes	106	106	$173.00	$69.30
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	68	59	$101.00	$40.30
99231 Follow-up hospital inpatient care per day, typically 15 minutes	43	19	$94.00	$37.05
12032 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.6-7.5 cm	35	32	$670.00	$245.42
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	34	34	$171.00	$66.71
11603 Removal of cancer skin growth of body, arms, or legs, 2.1-3.0 cm	29	26	$626.00	$161.13
12031 Intermediate repair of wound of scalp, underarms, trunk, arms, or legs, 2.5 cm or less	26	26	$524.00	$129.36
99213 Established patient office or other outpatient visit, typically 15 minutes	25	25	$150.00	$67.98
99221 Initial hospital inpatient care per day, typically 30 minutes	23	22	$228.00	$95.08
77001 Fluoroscopic guidance for insertion, replacement or removal of central venous access device	23	22	$55.00	$17.42
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	22	22	$149.00	$5.15
47563 Removal of gallbladder with x-ray study of bile ducts using an endoscope	22	22	$2219.00	$655.72
11602 Removal of cancer skin growth of body, arms, or legs, 1.1-2.0 cm	20	19	$547.00	$193.15
G0500 Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito	19	18	$149.00	$5.14
G0121 Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk	17	17	$1115.00	$171.31
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	16	16	$1022.00	$84.23
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$257.00	$99.73
36561 Insertion of central venous catheter and implanted device for infusion beneath the skin, patient 5 years or older	12	12	$3198.00	$318.27
36558 Insertion of tunneled central venous tube for infusion (5 years or older)	11	11	$1830.00	$231.64

Medical Specialties & State Licenses

CMS Verified: 2022-02-04

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License IA 29250

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.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

1098236 (IA)

Commercial Insurance / Payer ID John Deere Health Ins Pla

42141730707 (IA)

Commercial Insurance / Payer ID Wellmark Ins Plan

19243 (IA)

Practice Associates & Co-Workers

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

9 Associated Practitioners

Barbara Salisbury , ARNP

Nurse Practitioner

NPI 1164083861

Advanced Registered Nurse Practitioner

Dr. David Henry , MD

Surgery

NPI 1285861120

Doctor of Medicine (M.D.)

Dr. Andrew Rikkers , DO

Surgery

NPI 1558455386

Doctor of Osteopathic Medicine (D.O.)

Dr. Robert Cak , MD

Surgery

NPI 1609829688

Doctor of Medicine (M.D.)

Jayson Gesme

Surgery

NPI 1821042698

Dr. Melissa Garrett , MD

Surgery

NPI 1881910271

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 September 07, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location September 07, 2007

Registered at 1753 W RIDGEWAY AVE, STE 107, WATERLOO, IA 507014588 (Tel: 3198335907)

📍

Updated Business Mailing Address September 07, 2007

Registered at PO BOX 2758, WATERLOO, IA 507042758 (Tel: 3198335907)

👤

Provider Name / Credentials Updated September 07, 2007

Recorded as BRIAN GERRELTS, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 07, 2007

Surgery (License #29250 in IA)

🟢

Initial NPI Registration & Enumeration May 18, 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: 1003869397

Entity Type:

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

Enumeration Date: May 18, 2006

Last Update: February 04, 2022

Sole Proprietor: No

Update or Correct Profile

Mailing Address

Po Box 2758

Waterloo, IA 507042758

Phone: 3198335907

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.