Mary Frekko Kilavos, M.D.
NPI 1609841188ActiveIndividual· Internal Medicine· Gaithersburg, MD
Internal Medicine (M.D.) in Gaithersburg, Maryland, trained at Georgetown University School of Medicine (class of 2002). Their prescriptions cost Medicare Part D more than their services did: $389,792 for 4,222 claims, against $116,548 paid for services in 2024. Astellas Pharma US Inc reported $26.42 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1609841188 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 20, 2006 |
| Last updated in NPPES | Apr 21, 2025 |
| Certified by provider | Apr 21, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | D0062800 | MD |
| Internal Medicine | 207R00000X | MD046987 | DC |
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 (DC); Practitioner - Internal Medicine (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 358 |
|---|---|
| Services billed | 1,737 across 34 procedure codes |
| Paid by Medicare | $116,548 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,222 · 10,240 30-day fills |
|---|---|
| Patients | 370 |
| Total drug cost | $389,792 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Georgetown University School of Medicine |
|---|---|
| Graduation year | 2002 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Suburban/Nrh Medical Rehabilitation IncBethesda, MD · 941 clinicians
- Johns Hopkins Community Physicians, IncLaurel, MD · 763 clinicians
Hospital affiliation
- Johns Hopkins Hospital, theBaltimore, MD
Other facilities
- Adventist Home Health Services, Inc.Home health agency · Silver Spring, MD
Industry payments (Open Payments)
- 2025$26.42 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $26.42 | 1 |
What the 2025 payments were for
- Food and Beverage$26.42 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 81 internal medicine physicians in Gaithersburg · All internal medicine physicians in Maryland