Active NPI 1346357795 Individual Practitioner Male Practitioner

Dr. Gerald Cahill , MD

Surgery • Olympia Fields, IL

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Gerald Cahill, MD is a certified Surgery practicing in Olympia Fields, IL. With approximately 44 years of clinical experience since graduating from University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb) in 1982, Dr. Cahill delivers high-quality medical care to the local community at 3700 W 203RD ST STE 302.

Dr. Cahill maintains professional affiliations with Franciscan Physician Network, Specialty Physicians Of Illinois Llc and accepts Medicare assignment.

Frequently performed procedures and clinical services include follow-up hospital inpatient care per day, established patient outpatient office visit, initial 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

3700 W 203rd St Ste 302

Olympia Fields, IL 604611182

Telephone 7086792120

Fax 7085033230

Associated Practice Facility / Clinic

🏢 Specialty Physicians Of Illinois, Llc Facility NPI 1962024612

Medicare Profile & Education

Medical School

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

Graduation Year

1982

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Surgery in Olympia Fields, IL

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

44 Yrs +23.2 yrs vs City Avg

City Avg: 20.8 Yrs

State Avg: 27.3 Yrs

Regional Practice Density

11 Specialists

Practicing in Olympia Fields, IL (1624 Statewide)

Telehealth Adoption Rate

0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

61.3% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Cahill (44 Years) 44 Yrs

Olympia Fields Specialty Average (20.8 Years) 20.8 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
99231 Follow-up hospital inpatient care per day, typically 15 minutes	38	24	$92.00	$44.67
99213 Established patient office or other outpatient visit, typically 15 minutes	22	12	$180.00	$60.89
99221 Initial hospital inpatient care per day, typically 30 minutes	16	16	$190.00	$73.20

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	33	18	$180.00	$95.73
99213 Established patient office or other outpatient visit, typically 15 minutes	29	19	$180.00	$59.56
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	14	13	$250.00	$80.09
99221 Initial hospital inpatient care per day, typically 30 minutes	12	12	$190.00	$79.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	44	24	$180.00	$96.23
99213 Established patient office or other outpatient visit, typically 15 minutes	32	22	$180.00	$62.33
43644 Bypass operation of stomach using an endoscope	15	15	$3004.00	$1656.43
99221 Initial hospital inpatient care per day, typically 30 minutes	13	13	$190.00	$96.66
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$242.00	$79.38
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$339.00	$141.12

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	41	29	$135.22	$92.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	28	28	$287.68	$168.04
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	23	20	$189.00	$132.56
43644 Bypass operation of stomach using an endoscope	13	13	$3004.00	$1795.98
99213 Established patient office or other outpatient visit, typically 15 minutes	12	12	$144.00	$65.08
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$339.00	$142.47
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	11	11	$3000.00	$893.98

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	64	40	$126.00	$75.34
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	28	20	$189.00	$111.17
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	20	20	$285.00	$154.50
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$339.00	$139.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	103	73	$126.00	$73.76
99213 Established patient office or other outpatient visit, typically 15 minutes	37	29	$126.00	$47.96
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	18	18	$190.00	$109.10
43644 Bypass operation of stomach using an endoscope	16	16	$3004.00	$1751.72
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	12	12	$339.00	$116.39

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	82	48	$126.00	$74.02
99213 Established patient office or other outpatient visit, typically 15 minutes	48	35	$126.00	$47.16
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$190.00	$107.87
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	16	16	$190.00	$69.98

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	62	37	$123.74	$48.51
99213 Established patient office or other outpatient visit, typically 15 minutes	37	24	$128.59	$76.77
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	29	29	$192.07	$114.99
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope	15	15	$406.07	$130.55
43281 Repair of hernia of muscle at esophagus and stomach using an endoscope	14	14	$3045.93	$1187.70

Medical Specialties & State Licenses

CMS Verified: 2023-04-14

Surgery Primary Specialty

NUCC Taxonomy Code: 208600000X

State License IL 036068765

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.

Surgery

NUCC Taxonomy Code: 208600000X

State License IN 01058798A

Colon & Rectal Surgery

NUCC Taxonomy Code: 208C00000X

State License IL 036068765

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Colon & Rectal Surgery

NUCC Taxonomy Code: 208C00000X

State License IN 01058798A

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

036068765 (IL)

Medicaid State Provider ID

200511540 (IN)

Commercial Insurance / Payer ID Individual Medicare Ptan Specialty Physicians Of Illinois

F400340959 (IL)

Hospital & Practice Group Affiliations

Specialty Physicians Of Illinois Llc

3700 W 203rd St, Olympia Fields, IL 604611182

Phone: 7086792880

Franciscan Physician Network

24 Joliet St, Dyer, IN 463111705

Phone: 2198522518

Secondary Practice Locations

4932 W 95th St

Oak Lawn, IL 604532504

Phone: 7084225658

4932 W 95th St

Oak Lawn, IL 604532504

Phone: 7084225658

24 Joliet St Ste 302

Dyer, IN 463111705

Phone: 2198522518

Practice Associates & Co-Workers

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

4 Associated Practitioners

Dr. Matthew Martens , DO

Surgery

NPI 1275761603

Doctor of Osteopathic Medicine (D.O.)

Dr. Young-Il Ro , MD

Psychiatry & Neurology - Neurology

NPI 1659335495

Doctor of Medicine (M.D.)

Dr. Daniel Vera , MD

Surgery

NPI 1851476212

Doctor of Medicine (M.D.)

Dr. Sangeet Dhillon-Jhattu , MD

Internal Medicine - Nephrology

NPI 1912240797

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

16 Historical Events

📍

Updated Business Mailing Address October 21, 2022

Registered at 35318 EAGLE WAY, CHICAGO, IL 606781353 (Tel: 3175284800)

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) October 21, 2022

Surgery (License #01058798A in IN)

📍

Updated Practice Location March 19, 2021

Registered at 3700 W 203RD ST STE 302, OLYMPIA FIELDS, IL 604611182 (Tel: 7086792120)

📍

Updated Practice Location March 06, 2019

Registered at 3700 W 203RD ST STE 202, OLYMPIA FIELDS, IL 60461 (Tel: 7086792120)

📍

Updated Business Mailing Address March 06, 2019

Registered at 1040 SIERRA DR STE 400, GREENWOOD, IN 461437241 (Tel: 3175284800)

✅

NPI Profile Active May 19, 2017

NPI status registered as active in NPPES database

📍

Updated Practice Location May 19, 2017

Registered at 4932 W 95TH ST, OAK LAWN, IL 604532504 (Tel: 7084225658)

📍

Updated Business Mailing Address May 19, 2017

Registered at 4932 W 95TH ST, OAK LAWN, IL 604532504 (Tel: 7084225658)

👤

Provider Name / Credentials Updated May 19, 2017

Recorded as GERALD CAHILL, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) May 19, 2017

Surgery (License #036068765 in IL)

✅

NPI Profile Active November 16, 2016

NPI status registered as active in NPPES database

📍

Updated Practice Location November 16, 2016

Registered at 2850 W 95TH ST, SUITE 300, EVERGREEN PARK, IL 608052735 (Tel: 7084225658)

📍

Updated Business Mailing Address November 16, 2016

Registered at 2850 W 95TH ST, SUITE 300, EVERGREEN PARK, IL 608052735 (Tel: 7084225658)

👤

Provider Name / Credentials Updated November 16, 2016

Recorded as GERALD CAHILL, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) November 16, 2016

Surgery (License #036068765 in IL)

🟢

Initial NPI Registration & Enumeration August 23, 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: 1346357795

Entity Type:

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

Enumeration Date: August 23, 2006

Last Update: April 14, 2023

Sole Proprietor: No

Update or Correct Profile

Mailing Address

35318 Eagle Way

Chicago, IL 606781353

Phone: 3175284800

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.