Alexandra A. Chrysanthis, MD
NPI 1588734974ActiveIndividual· Internal Medicine· Los Alamitos, CA
Internal Medicine (MD) in Los Alamitos, California, trained at Perelman School of Med at the University of Pennsylvania (class of 1995). Their prescriptions cost Medicare Part D more than their services did: $464,176 for 6,344 claims, against $102,315 paid for services in 2024. Novo Nordisk Inc was the largest of 10 companies reporting payments in 2025, $364.76 in all, mostly food and beverage.
Overview
| NPI | 1588734974 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 9, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A62293 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 419 |
|---|---|
| Services billed | 1,402 across 24 procedure codes |
| Paid by Medicare | $102,315 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,344 · 14,737 30-day fills |
|---|---|
| Patients | 531 |
| Total drug cost | $464,176 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Perelman School of Med at the University of Pennsylvania |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Internal Medicine |
Hospital affiliations
- Memorialcare Long Beach Medical CenterLong Beach, CA
- Memorialcare Orange Coast Medical CenterFountain Valley, CA
- Uci Health-OrangeOrange, CA
Other facilities
- Los Robles HealthcareHome health agency · Thousand Oaks, CA
Industry payments (Open Payments)
- 2025$364.76 · 19 payments from 10 companies
- 2024$404.30 · 15 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $53.42 | 3 |
| Amgen Inc. | $48.78 | 3 |
| Exact Sciences Corporation | $46.93 | 3 |
| Bausch Health US, LLC | $45.80 | 2 |
| Astrazeneca Pharmaceuticals LP | $42.75 | 2 |
What the 2025 payments were for
- Food and Beverage$364.76 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Los Alamitos
- 1023075579
- 1053313270
- 1174801344
- 1245308238
- 1265694962
- 1285752436
- 1306877253
- 1447348628
- 1477737369
- 1518954973
- 1568623635
- 1588752778
All 57 internal medicine physicians in Los Alamitos · All internal medicine physicians in California