Active NPI 1619096583 Individual Practitioner Male Practitioner

Dr. Benjamin Shay Chee Ko , MD

Internal Medicine - Nephrology • Chicago, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Benjamin Ko, MD is a certified Internal Medicine - Nephrology practicing in Chicago, IL. With approximately 25 years of clinical experience since graduating from University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb) in 2001, Dr. Ko delivers high-quality medical care to the local community at 5841 S MARYLAND AVE.

Dr. Ko maintains professional affiliations with University Of Chicago, The University Of Chicago Medical Center and accepts Medicare assignment.

Frequently performed procedures and clinical services include established patient outpatient office visit, subsequent hospital care with moderate levelof medical decision making, if using time, at least, dialysis procedure including 1 evaluation. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

5841 S Maryland Ave
Suite S506, Mc 5100

Chicago, IL 606371447

Telephone 7738349140

Fax 7737055818

Associated Practice Facility / Clinic

🏢 University Of Chicago Facility NPI 1821048786

Medicare Profile & Education

Medical School

University Of Illinois College Of Med (Chi/peor/rock/chm-Urb)

Graduation Year

2001

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine - Nephrology in Chicago, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

25 Yrs -0.5 yrs vs City Avg

City Avg: 25.5 Yrs

State Avg: 26.3 Yrs

Regional Practice Density

203 Specialists

Practicing in Chicago, IL (598 Statewide)

Telehealth Adoption Rate

25.1% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

79.0% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Ko (25 Years) 25 Yrs

Chicago Specialty Average (25.5 Years) 25.5 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
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	101	85	$444.66	$106.26
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	76	41	$428.33	$130.32
90945 Dialysis procedure including 1 evaluation	67	22	$643.09	$93.01
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	32	20	$295.91	$86.84
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	32	31	$609.88	$158.09
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	28	28	$1048.18	$190.28
90935 Hemodialysis procedure with physician evaluation	15	11	$543.40	$77.20

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	161	123	$412.98	$103.80
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	61	35	$415.51	$127.12
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	61	46	$588.89	$152.29
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	28	15	$288.00	$84.53
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	26	25	$1010.46	$185.20

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	176	72	$405.09	$108.16
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	159	123	$596.21	$156.90
90945 Dialysis procedure including 1 evaluation	98	39	$606.22	$92.16
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	82	73	$428.00	$104.85
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	51	49	$973.24	$212.01

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	213	152	$595.03	$159.13
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	148	72	$388.73	$110.88
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	70	68	$920.11	$215.23
90935 Hemodialysis procedure with physician evaluation	45	33	$493.40	$78.31
90945 Dialysis procedure including 1 evaluation	33	13	$577.67	$92.89
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	31	28	$403.45	$108.01
99443 Telephone medical discussion with physician, 21-30 minutes	12	12	$304.00	$108.57

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	149	65	$372.36	$112.38
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	143	116	$595.79	$121.43
90935 Hemodialysis procedure with physician evaluation	73	48	$464.30	$77.74
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	63	61	$874.83	$218.02
90945 Dialysis procedure including 1 evaluation	28	13	$563.71	$93.61
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	24	$372.68	$86.15
99443 Telephone medical discussion with physician, 21-30 minutes	21	20	$296.71	$86.55

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	193	132	$550.22	$119.13
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	166	73	$355.31	$110.44
90935 Hemodialysis procedure with physician evaluation	55	32	$460.05	$78.39
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	40	39	$831.27	$213.34
90945 Dialysis procedure including 1 evaluation	36	18	$530.50	$91.32
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	21	18	$407.29	$84.29
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	17	15	$246.88	$78.06

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	262	110	$344.10	$107.31
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	189	127	$520.17	$114.45
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	67	64	$833.73	$209.37
90935 Hemodialysis procedure with physician evaluation	51	42	$440.00	$74.62
90945 Dialysis procedure including 1 evaluation	50	24	$516.20	$87.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	27	23	$338.93	$80.75
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	18	17	$236.50	$75.01

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	248	95	$337.00	$106.31
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	171	122	$511.98	$114.63
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes	35	35	$769.06	$209.47
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	28	26	$319.61	$80.81
90935 Hemodialysis procedure with physician evaluation	26	22	$428.00	$73.74
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes	21	19	$232.00	$74.13

Medical Specialties & State Licenses

Internal Medicine - Nephrology Primary Specialty

NUCC Taxonomy Code: 207RN0300X

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Hospital & Practice Group Affiliations

University Of Chicago

5841 S Maryland Ave, Chicago, IL 606371443

Phone: 8888240200

The University Of Chicago Medical Center

5841 S Maryland Ave, Chicago, IL 606371443

Phone: 7737021000

University Of Chicago

355 E Grand Ave, Chicago, IL 606115389

Phone: 8888240200

Practice Associates & Co-Workers

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

40 Associated Practitioners

Dr. Don Martinez , MD

Radiology - Diagnostic Radiology

NPI 1003059288

Doctor of Medicine (M.D.)

Alexandra Dumitrescu

Internal Medicine

NPI 1003078049

Peleg Horowitz

Neurological Surgery

NPI 1003088279

Sandeep Gurbuxani

Pathology - Hematology

NPI 1003093535

Dr. Niren Gandra , MD

Internal Medicine

NPI 1003126020

Doctor of Medicine (M.D.)

Dr. Allie Dakroub , MD MS

Internal Medicine

NPI 1003174202

MDMS

Career & Practice History Timeline

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

6 Historical Events

✅

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍

Updated Practice Location July 08, 2007

Registered at 5841 S MARYLAND AVE, SUITE S506, MC 5100, CHICAGO, IL 606371447 (Tel: 7738349140)

📍

Updated Business Mailing Address July 08, 2007

Registered at 5841 S MARYLAND AVE, SUITE S506, MC 5100, CHICAGO, IL 606371447 (Tel: 7738349140)

👤

Provider Name / Credentials Updated July 08, 2007

Recorded as BENJAMIN KO, M.D.

🎓

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

Internal Medicine

🟢

Initial NPI Registration & Enumeration March 29, 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: 1619096583

Entity Type:

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

Enumeration Date: March 29, 2007

Last Update: July 08, 2007

Sole Proprietor: Yes

Update or Correct Profile

Mailing Address

5841 S Maryland Ave, Suite S506, Mc 5100

Chicago, IL 606371447

Phone: 7738349140

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.