Marjorie Ann Malbas, MD
NPI 1588977284ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Rochester, MN
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Mayo Clinic and 1 other group, practicing in Rochester, Minnesota. Their prescriptions cost Medicare Part D more than their services did: $2,494,836 for 3,871 claims, against $78,403 paid for services in 2024. Ascendis Pharma Endocrinology Inc was the largest of 4 companies reporting payments in 2025, $68,941 in all, mostly speaking and faculty fees. Lists Christus Spohn Hospital Corpus Christi and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1588977284 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 22, 2010 |
| Last updated in NPPES | Sep 5, 2025 |
| Certified by provider | Sep 5, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 79212 | MN |
| Internal Medicine, Endocrinology, Diabetes & Metabolism | 207RE0101X | P8695 | TX |
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 - Endocrinology (MN); Practitioner - Endocrinology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 274 |
|---|---|
| Services billed | 2,805 across 39 procedure codes |
| Paid by Medicare | $78,403 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,871 · 8,673 30-day fills |
|---|---|
| Patients | 548 |
| Total drug cost | $2,494,836 |
| Generic share | 37% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Mayo ClinicRochester, MN · 4,956 clinicians
- Christus Trinity Clinic TexasTyler, TX · 1,540 clinicians
Hospital affiliations
- Christus Spohn Hospital Corpus ChristiCorpus Christi, TX
- Mayo Clinic Health System - Albert Lea and AustinAlbert Lea, MN
- Mayo Clinic Health System - Cannon FallsCannon Falls, MN
- Mayo Clinic Health System - Lake CityLake City, MN
- Mayo Clinic Hospital RochesterRochester, MN
Industry payments (Open Payments)
- 2025$68,941 · 101 payments from 4 companies
- 2024$30,045 · 54 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ascendis Pharma Endocrinology Inc | $35,464 | 38 |
| Amgen Inc. | $33,333 | 61 |
| Genzyme Corporation | $102.84 | 1 |
| Mannkind Corporation | $42.50 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$50,446 · 23 payments
- Travel and Lodging$10,405 · 44 payments
- Consulting Fee$5,463 · 1 payment
- Food and Beverage$2,585 · 32 payments
- Education$42.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 83 endocrinologists in Rochester · All endocrinologists in Minnesota