Doctor profile · Federal record
Dr. William Grehan, MD
Anesthesiology Physician (CMS: Anesthesiology) · Anesthesiology Physician · Pain Medicine (Anesthesiology) Physician · Melrose Park, IL
- NPI 1417961061
- Accepts Medicare
- MIPS 84.4 / 100 · 2023
- 34 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
701 W North Ave
Melrose Park, IL 601601612
(708) 681-3202 - Additional location
-
4440 W 95Th St
Oak Lawn, IL 604532600
(708) 684-8000 - Mailing address
-
1121 Lake Cook RD, Ste M
Deerfield, IL 600155234
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- April 22, 2025
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State licenses (2)
- South Carolina #89895 · Illinois #036-082615
- Medicaid
- IL #36082615
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1417961061. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
314
Distinct HCPCS
8
Medicare allowed
$39,280
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
00142 |
Anesthesia for lens surgery | 83 | 82 | $128 | |
01402 |
Anesthesia for procedure for total knee joint replacement | 66 | 66 | $187 | |
64447 |
Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 48 | 47 | $60 | |
01214 |
Anesthesia for total hip replacement | 42 | 42 | $215 | |
64415 |
Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) | 31 | 31 | $67 | |
64450 |
Injection of anesthetic agent and/or steroid into other nerve or branch | 18 | 12 | $33 | |
01810 |
Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand | 14 | 14 | $98 | |
76942 |
Ultrasonic guidance for needle placement | 12 | 12 | $31 |
In context: peer comparison
Among 5 peers in Melrose Park Anesthesiology Physician, average services per provider: 30. This provider delivers 10× the peer median.Frequently asked questions
What is Dr. William Grehan's medical specialty?
Dr. William Grehan practices Anesthesiology Physician in Melrose Park, IL.
Where does Dr. William Grehan practice?
Dr. William Grehan practices at 701 W North Ave, Melrose Park, IL 601601612. Office phone: 7086813202.
What is Dr. William Grehan's NPI?
Dr. William Grehan's National Provider Identifier (NPI) is 1417961061, issued by NPPES.
Does Dr. William Grehan accept Medicare assignment?
Yes. Dr. William Grehan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Grehan commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for lens surgery (HCPCS 00142); Anesthesia for procedure for total knee joint replacement (HCPCS 01402); Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (HCPCS 64447). Source: CMS Medicare Physician & Other Practitioners file.