Active NPI 1134328446 Individual Practitioner Male Practitioner

Dr. Christopher Kendall Gerwing , MD

Emergency Medicine • Milwaukee, WI

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Christopher Gerwing, MD is a certified Emergency Medicine practicing in Milwaukee, WI. With approximately 19 years of clinical experience since graduating from Medical College Of Wisconsin in 2007, Dr. Gerwing delivers high-quality medical care to the local community at 111 E WISCONSIN AVE.

Dr. Gerwing is affiliated with Green Bay Emergency Medicine Services Sc and accepts Medicare assignment.

Frequently performed procedures and clinical services include emergency department visit for life threatening or functioning severity, interpretation and report of electrical activity of heart using 1-3 leads, critical care, first. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

111 E Wisconsin Ave
Suite 2000

Milwaukee, WI 532024815

Telephone 4142906720

Fax 4142906755

Associated Practice Facility / Clinic

🏢 Ihc-Calumet Emergency Physicians, Llc Facility NPI 1922056761

Medicare Profile & Education

Medical School

Medical College Of Wisconsin

Graduation Year

2007

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Emergency Medicine in Milwaukee, WI

Established Specialist (10-20 Yrs)

Practitioner Clinical Experience

19 Yrs +1.8 yrs vs City Avg

City Avg: 17.2 Yrs

State Avg: 19.8 Yrs

Regional Practice Density

362 Specialists

Practicing in Milwaukee, WI (1497 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

85.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Gerwing (19 Years) 19 Yrs

Milwaukee Specialty Average (17.2 Years) 17.2 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
99285 Emergency department visit for life threatening or functioning severity	104	97	$1007.00	$168.03
93042 Interpretation and report of electrical activity of heart using 1-3 leads	56	54	$34.00	$6.59
99291 Critical care, first 30-74 minutes	31	30	$1683.00	$205.35
99284 Emergency department visit with moderate level of medical decision making	31	28	$643.00	$116.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	66	66	$1516.00	$165.82
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	57	55	$116.00	$7.82
99284 Emergency department visit with moderate level of medical decision making	23	23	$1026.00	$114.33
99291 Critical care, first 30-74 minutes	13	13	$1754.00	$202.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	108	93	$116.00	$7.97
99285 Emergency department visit for life threatening or functioning severity	100	98	$1516.00	$167.76
99284 Emergency department visit with moderate level of medical decision making	30	30	$1026.00	$115.87
99283 Emergency department visit with low level of medical decision making	23	22	$683.00	$68.31
99291 Critical care, first 30-74 minutes	14	14	$1754.00	$207.02

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	113	111	$1516.00	$171.13
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	108	94	$116.00	$8.12
99284 Emergency department visit with moderate level of medical decision making	32	32	$1026.00	$117.82
99291 Critical care, first 30-74 minutes	26	26	$1754.00	$211.12
99283 Emergency department visit with low level of medical decision making	17	17	$683.00	$69.31

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	112	97	$116.00	$8.37
99285 Emergency department visit for life threatening or functioning severity	110	105	$1516.00	$167.49
99284 Emergency department visit with moderate level of medical decision making	36	36	$1026.00	$115.26
99291 Critical care, first 30-74 minutes	33	32	$1754.00	$216.70
99283 Emergency department visit with low level of medical decision making	27	27	$683.00	$63.05

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99285 Emergency department visit for life threatening or functioning severity	122	118	$1516.00	$164.41
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	110	93	$116.00	$8.17
99284 Emergency department visit with moderate level of medical decision making	45	43	$1026.00	$110.76
99283 Emergency department visit with low level of medical decision making	32	32	$683.00	$59.00
99291 Critical care, first 30-74 minutes	24	24	$1754.00	$211.74
99220 Hospital observation care, typically 70 minutes	12	12	$1385.00	$164.10

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	179	163	$116.00	$8.82
99285 Emergency department visit for life threatening or functioning severity	163	160	$1516.00	$176.08
99284 Emergency department visit with moderate level of medical decision making	78	77	$1026.00	$118.32
99283 Emergency department visit with low level of medical decision making	54	53	$683.00	$62.58
99291 Critical care, first 30-74 minutes	43	43	$1754.00	$229.28

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
93010 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only	236	208	$65.25	$11.08
99285 Emergency department visit for life threatening or functioning severity	183	179	$894.02	$221.67
99284 Emergency department visit with moderate level of medical decision making	77	75	$598.65	$149.07
99283 Emergency department visit with low level of medical decision making	62	58	$386.50	$78.74
99291 Critical care, first 30-74 minutes	58	58	$1015.79	$291.10
99220 Hospital observation care, typically 70 minutes	14	14	$619.29	$244.59

Medical Specialties & State Licenses

CMS Verified: 2021-12-16

Emergency Medicine Primary Specialty

NUCC Taxonomy Code: 207P00000X

State License WI 54047-20

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Emergency Medicine

NUCC Taxonomy Code: 207P00000X

State License IL 125.052425

Hospital & Practice Group Affiliations

Green Bay Emergency Medicine Services Sc

744 S Webster Ave, Green Bay, WI 543013505

Phone: 9204333500

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Natalia Rumas , MD

Emergency Medicine

NPI 1003233016

Doctor of Medicine (M.D.)

Dr. Adam Ankrum , DO

Emergency Medicine

NPI 1003875303

Doctor of Osteopathic Medicine (D.O.)

Dayna Niesen , PA-C

Physician Assistant

NPI 1023360583

Physician Assistant (Certified)

Timothy Deming , NP

Nurse Practitioner

NPI 1023397064

Nurse Practitioner

Edward Pisarcik , PA-C

Physician Assistant

NPI 1023457397

Physician Assistant (Certified)

Dr. Richard Stein , MD

Emergency Medicine

NPI 1033143318

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 March 05, 2012

NPI status registered as active in NPPES database

📍

Updated Practice Location March 05, 2012

Registered at 111 E WISCONSIN AVE, SUITE 2000, MILWAUKEE, WI 532024815 (Tel: 4142906720)

📍

Updated Business Mailing Address March 05, 2012

Registered at 111 E WISCONSIN AVE, SUITE 2000, MILWAUKEE, WI 532024815 (Tel: 4142906720)

👤

Provider Name / Credentials Updated March 05, 2012

Recorded as CHRISTOPHER GERWING, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) March 05, 2012

Emergency Medicine (License #54047-20 in WI)

🟢

Initial NPI Registration & Enumeration July 16, 2007

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: 1134328446

Entity Type:

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

Enumeration Date: July 16, 2007

Last Update: December 16, 2021

Sole Proprietor: No

Update or Correct Profile

Mailing Address

111 E Wisconsin Ave, Suite 2000

Milwaukee, WI 532024815

Phone: 4142906720

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.