Doctor profile · Federal record
Dr. Walter Longo, MD
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Medical Oncology Physician · Hematology (Internal Medicine) Physician · Milwaukee, WI
- NPI 1629044649
- Accepts Medicare
- MIPS 80.5 / 100 · 2023
- 49 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
9200 W Wisconsin Ave
Milwaukee, WI 53226
(414) 805-4600
fax (414) 805-6805 - Additional location
-
4805 S Moorland RD
New Berlin, WI 531517401
(262) 798-7200
fax (262) 798-7201
Credentials & registration
- NPI registered
- February 2006 — 20 yrs on file
- Profile last updated
- August 5, 2022
- Year of graduation
- 1977 — 49 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- Wisconsin #24712
- Medicaid
- WI #1629044649
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1629044649. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
765
Distinct HCPCS
6
Medicare allowed
$69,650
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 503 | 121 | $92 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 122 | 30 | $112 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 67 | 18 | $75 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 30 | 17 | $33 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 26 | 23 | $62 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 17 | 17 | $125 |
In context: peer comparison
Among 18 peers in this city , average services per provider: 98. This provider delivers 7.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
390
Patients
66
Total drug cost
$852,880
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Acyclovir | Generic | 72 | 25 | $2,224 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 44 | 16 | $307 |
| Lorazepam | Generic | 39 | 0 | $358 |
| Prednisone | Generic | 31 | 14 | $215 |
| Oxycodone Hcl | Generic | 27 | 0 | $913 |
| Dexamethasone | Generic | 25 | 0 | $569 |
| Jakafi (Ruxolitinib Phosphate) | Brand | 24 | 0 | $288,295 |
| Brukinsa (Zanubrutinib) | Brand | 21 | 0 | $236,557 |
| Eliquis (Apixaban) | Brand | 18 | 0 | $12,771 |
| Fluconazole | Generic | 17 | 0 | $770 |
Frequently asked questions
What is Dr. Walter Longo's medical specialty?
Dr. Walter Longo practices Hematology & Oncology Physician in Milwaukee, WI.
Where does Dr. Walter Longo practice?
Dr. Walter Longo practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. Office phone: 4148054600.
What is Dr. Walter Longo's NPI?
Dr. Walter Longo's National Provider Identifier (NPI) is 1629044649, issued by NPPES.
Does Dr. Walter Longo accept Medicare assignment?
Yes. Dr. Walter Longo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Walter Longo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232). Source: CMS Medicare Physician & Other Practitioners file.