Doctor profile · Federal record
Dr. Michael Fleischman, M.D.
Gastroenterology Physician · Los Alamitos, CA
- NPI 1801073994
- 18 yrs on file
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3851 Katella Ave Ste 205
Los Alamitos, CA 907203433
(562) 430-4449
Credentials & registration
- NPI registered
- January 2008 — 18 yrs on file
- Profile last updated
- September 8, 2025
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A129978
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1801073994. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$730
Transactions
27
Manufacturers
5
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 21 | $499.58 | |
| Boston Scientific Corporation | 1 | $136.09 | |
| Gilead Sciences, INC. | 3 | $46.95 | |
| Madrigal Pharmaceuticals | 1 | $24.56 | |
| Pfizer INC. | 1 | $22.74 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
66
Patients
16
Total drug cost
$300,129
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Mavyret (Glecaprevir/Pibrentasvir) | Brand | 27 | 16 | $213,893 |
| Epclusa (Sofosbuvir/Velpatasvir) | Brand | 20 | 0 | $86,027 |
| Entecavir | Generic | 19 | 0 | $209 |
Frequently asked questions
What is Dr. Michael Fleischman's medical specialty?
Dr. Michael Fleischman practices Gastroenterology Physician in Los Alamitos, CA.
Where does Dr. Michael Fleischman practice?
Dr. Michael Fleischman practices at 3851 Katella Ave Ste 205, Los Alamitos, CA 907203433. Office phone: 5624304449.
What is Dr. Michael Fleischman's NPI?
Dr. Michael Fleischman's National Provider Identifier (NPI) is 1801073994, issued by NPPES.