Alexander Sebastiaan Asser, M.D.
NPI 1861656670ActiveIndividual· Internal Medicine, Clinical Cardiac Electrophysiology· Rockville, MD
Internal Medicine, Clinical Cardiac Electrophysiology (M.D.) in Rockville, Maryland, trained at Temple University School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $1,808,973 for 5,247 claims, against $550,835 paid for services in 2024. Abbott Laboratories was the largest of 13 companies reporting payments in 2025, $2,247 in all, mostly food and beverage.
Overview
| NPI | 1861656670 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 11, 2008 |
| Last updated in NPPES | Aug 6, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Clinical Cardiac Electrophysiology Primary | 207RC0001X | D70996 | MD |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | D70996 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiac Electrophysiology (DC); Practitioner - Cardiac Electrophysiology (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,948 |
|---|---|
| Services billed | 9,613 across 86 procedure codes |
| Paid by Medicare | $550,835 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,247 · 14,049 30-day fills |
|---|---|
| Patients | 757 |
| Total drug cost | $1,808,973 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | Temple University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Cardiac Electrophysiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical group
- Adventist Physician Services IncSilver Spring, MD · 148 clinicians
Hospital affiliations
- Adventist Healthcare Shady Grove Medical CenterRockville, MD
- Adventist Healthcare White Oak Medical CenterSilver Spring, MD
- Frederick Health HospitalFrederick, MD
- Holy Cross Germantown HospitalGermantown, MD
- Holy Cross HospitalSilver Spring, MD
Industry payments (Open Payments)
- 2025$2,247 · 61 payments from 13 companies
- 2024$1,265 · 57 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $1,541 | 31 |
| Biosense Webster, Inc. | $226.13 | 9 |
| Medtronic, Inc. | $85.78 | 4 |
| Amgen Inc. | $85.75 | 3 |
| Baxter Healthcare | $58.21 | 2 |
What the 2025 payments were for
- Food and Beverage$1,596 · 56 payments
- Travel and Lodging$651.17 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Clinical Cardiac Electrophysiology providers in Rockville
- 1114005238
- 1083714661
- 1538556113
All Internal Medicine, Clinical Cardiac Electrophysiology providers in Maryland →