Erin R. Krstanovic, CRNP- ADULT
NPI 1588317572ActiveIndividual· Internal Medicine, Gastroenterology· Frederick, MD
Internal Medicine, Gastroenterology (CRNP- ADULT) with Meritus Medical Center Inc and 1 other group, practicing in Frederick, Maryland. Their prescriptions cost Medicare Part D more than their services did: $203,036 for 943 claims, against $43,106 paid for services in 2024. Abbvie Inc. was the largest of 19 companies reporting payments in 2025, $1,951 in all, mostly food and beverage. Lists Frederick Health Hospital as a hospital affiliation.
Overview
| NPI | 1588317572 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP- ADULT |
| Sole proprietor | No |
| NPI issued | Jan 31, 2022 |
| Last updated in NPPES | Jan 31, 2022 |
| Certified by provider | Jan 31, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | R198694 | MD |
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 - Nurse Practitioner (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 378 |
|---|---|
| Services billed | 526 across 7 procedure codes |
| Paid by Medicare | $43,106 |
Part D prescriptions in 2024
| Prescriptions (claims) | 943 · 2,083 30-day fills |
|---|---|
| Patients | 433 |
| Total drug cost | $203,036 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Meritus Medical Center IncHagerstown, MD · 743 clinicians
- Gastroenterology Specialists of Frederick, P.A.Frederick, MD · 3 clinicians
Hospital affiliation
- Frederick Health HospitalFrederick, MD
Industry payments (Open Payments)
- 2025$1,951 · 77 payments from 19 companies
- 2024$1,857 · 81 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $479.57 | 15 |
| Genzyme Corporation | $245.06 | 9 |
| Madrigal Pharmaceuticals | $219.10 | 8 |
| Regeneron Healthcare Solutions, Inc. | $175.58 | 9 |
| Lilly USA, LLC | $172.29 | 4 |
What the 2025 payments were for
- Food and Beverage$1,951 · 77 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 27 gastroenterologists in Frederick · All gastroenterologists in Maryland