Melanie Natasha Rayan, MD
NPI 1922617869ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Rapid City, SD
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Monument Health Rapid City Hospital Inc, practicing in Rapid City, South Dakota. Part D covered 152 prescriptions written in 2024. Amgen Inc. was the largest of 11 companies reporting payments in 2025, $450.89 in all, mostly food and beverage. Lists Chadron Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1922617869 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 27, 2020 |
| Last updated in NPPES | Oct 3, 2025 |
| Certified by provider | Oct 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 15781 | SD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (SD) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 152 · 223 30-day fills |
|---|---|
| Patients | 28 |
| Total drug cost | $46,601 |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Monument Health Rapid City Hospital IncRapid City, SD · 564 clinicians
Hospital affiliations
- Chadron HospitalChadron, NE
- Fall River Hospital - CahHot Springs, SD
- Monument Health Custer HospitalCuster, SD
- Monument Health Rapid City HospitalRapid City, SD
- Monument Health Spearfish HospitalSpearfish, SD
Industry payments (Open Payments)
- 2025$450.89 · 18 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $137.72 | 4 |
| Medtronic, Inc. | $70.34 | 1 |
| Ascendis Pharma Endocrinology Inc | $44.80 | 2 |
| Pfizer Inc. | $35.69 | 2 |
| Cardiva Medical, Inc. | $35.32 | 1 |
What the 2025 payments were for
- Food and Beverage$450.89 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Rapid City
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All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in South Dakota →