Doctor profile · Federal record
Dr. Josef Lassan
Internal Medicine Physician (CMS: Hospitalist) · Hospitalist Physician · Honolulu, HI
- NPI 1912326596
- Accepts Medicare
- 12 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1301 Punchbowl St
Honolulu, HI 968132499
(808) 691-1000
Credentials & registration
- NPI registered
- April 2014 — 12 yrs on file
- Profile last updated
- June 16, 2021
- Year of graduation
- 2014 — 12 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State licenses (2)
- Hawaii #MD20515 · North Carolina #2018-02621
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912326596. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
487
Distinct HCPCS
4
Medicare allowed
$61,286
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 338 | 96 | $121 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 73 | 72 | $173 | |
99239 |
Hospital discharge day management, more than 30 minutes | 49 | 49 | $114 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 27 | 11 | $81 |
In context: peer comparison
Among 114 peers in Honolulu Internal Medicine Physician, average services per provider: 127. This provider delivers 3.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
12
Patients
12
Total drug cost
$95
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 12 | 12 | $95 |
Hospital affiliations
Frequently asked questions
What is Dr. Josef Lassan's medical specialty?
Dr. Josef Lassan practices Internal Medicine Physician in Honolulu, HI.
Where does Dr. Josef Lassan practice?
Dr. Josef Lassan practices at 1301 Punchbowl St, Honolulu, HI 968132499. Office phone: 8086911000.
What is Dr. Josef Lassan's NPI?
Dr. Josef Lassan's National Provider Identifier (NPI) is 1912326596, issued by NPPES.
Does Dr. Josef Lassan accept Medicare assignment?
Yes. Dr. Josef Lassan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Josef Lassan commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.