Doctor profile · Federal record
Dr. Neil Guenther, M.D.
Anesthesiology Physician (CMS: Anesthesiology) · Milwaukee, WI
- NPI 1609859404
- Accepts Medicare
- 43 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
2900 W Oklahoma Ave
Milwaukee, WI 532154330
(414) 649-6000 - Mailing address
-
Po Box 735044
Chicago, IL 606735044
Credentials & registration
- NPI registered
- November 2005 — 21 yrs on file
- Profile last updated
- December 1, 2025
- Year of graduation
- 1983 — 43 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State license (1)
- Wisconsin #25937-020
- Medicaid
- WI #31445000
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1609859404. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,661
Distinct HCPCS
8
Medicare allowed
$209,967
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 2,095 | 215 | $74 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 271 | 140 | $109 | |
99231 |
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 168 | 51 | $46 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 46 | 40 | $166 | |
00145 |
Anesthesia for retinal surgery | 26 | 26 | $158 | |
36620 |
Insertion of artery tube for blood sampling or infusion through skin | 22 | 22 | $40 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 17 | 17 | $124 | |
00731 |
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 16 | 16 | $157 |
In context: peer comparison
Among 98 peers in Milwaukee Anesthesiology Physician, average services per provider: 36. This provider delivers 74× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
34
Patients
30
Total drug cost
$1,413
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Oxycodone-Acetaminophen (Oxycodone Hcl/Acetaminophen) | Brand | 20 | 18 | $220 |
| Naloxone Hcl | Generic | 14 | 12 | $1,193 |
Hospital affiliations
Frequently asked questions
What is Dr. Neil Guenther's medical specialty?
Dr. Neil Guenther practices Anesthesiology Physician in Milwaukee, WI.
Where does Dr. Neil Guenther practice?
Dr. Neil Guenther practices at 2900 W Oklahoma Ave, Milwaukee, WI 532154330. Office phone: 4146496000.
What is Dr. Neil Guenther's NPI?
Dr. Neil Guenther's National Provider Identifier (NPI) is 1609859404, issued by NPPES.
Does Dr. Neil Guenther accept Medicare assignment?
Yes. Dr. Neil Guenther accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Neil Guenther commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.