Doctor profile · Federal record
Dr. Gerald Cahill, M.D.
Surgery Physician (CMS: General Surgery) · Surgery Physician · Colon & Rectal Surgery Physician · Colon & Rectal Surgery Physician · Olympia Fields, IL
- NPI 1346357795
- Accepts Medicare
- 44 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
3700 W 203Rd St Ste 302
Olympia Fields, IL 604611182
(708) 679-2120
fax (708) 503-3230 - Additional location
-
24 Joliet St Ste 302
Dyer, IN 463111705
(219) 852-2518 - Additional location
-
4932 W 95Th St
Oak Lawn, IL 604532504
(708) 422-5658
fax (708) 422-4660 - Mailing address
-
35318 Eagle Way
Chicago, IL 606781353
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- April 14, 2023
- Year of graduation
- 1982 — 44 yrs since
- Specialty taxonomy
- 208600000X — NUCC code
- State licenses (2)
- Illinois #036068765 · Indiana #01058798A
- Medicaid (2)
- IL #036068765 · IN #200511540
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1346357795. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
88
Distinct HCPCS
4
Medicare allowed
$6,960
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 33 | 18 | $96 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 29 | 19 | $60 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 14 | 13 | $80 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 12 | 12 | $79 |
In context: peer comparison
Among 4 peers in this city , average services per provider: 38. This provider delivers 2.3× the peer median.Open Payments
Industry payments received
All-time total
$148
Transactions
3
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Olympus America Inc. | 3 | $148.07 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
13
Patients
0
Total drug cost
$2,793
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Sucralfate | Generic | 13 | 0 | $2,793 |
Hospital affiliations
Frequently asked questions
What is Dr. Gerald Cahill's medical specialty?
Dr. Gerald Cahill practices Surgery Physician in Olympia Fields, IL.
Where does Dr. Gerald Cahill practice?
Dr. Gerald Cahill practices at 3700 W 203Rd St Ste 302, Olympia Fields, IL 604611182. Office phone: 7086792120.
What is Dr. Gerald Cahill's NPI?
Dr. Gerald Cahill's National Provider Identifier (NPI) is 1346357795, issued by NPPES.
Does Dr. Gerald Cahill accept Medicare assignment?
Yes. Dr. Gerald Cahill accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Gerald Cahill commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.