Luisa A. Duran
NPI 1548437940ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· San Ramon, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism in San Ramon, California, trained at Warren Alpert Medical School of Brown University (class of 2008). Their prescriptions cost Medicare Part D more than their services did: $1,026,866 for 2,737 claims, against $210,907 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 6 companies reporting payments in 2025, $507.83 in all, mostly food and beverage.
Overview
| NPI | 1548437940 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | May 14, 2008 |
| Last updated in NPPES | Sep 29, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A112101 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 417 |
|---|---|
| Services billed | 8,760 across 16 procedure codes |
| Paid by Medicare | $210,907 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,737 · 7,224 30-day fills |
|---|---|
| Patients | 400 |
| Total drug cost | $1,026,866 |
| Generic share | 53% of claims |
Education and affiliations
| Medical school | Warren Alpert Medical School of Brown University |
|---|---|
| Graduation year | 2008 |
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- John Muir Physician NetworkPleasant Hill, CA · 494 clinicians
Hospital affiliations
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- San Ramon Regional Medical CenterSan Ramon, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$507.83 · 14 payments from 6 companies
- 2024$155.97 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $182.95 | 7 |
| Dexcom, Inc. | $163.88 | 1 |
| Amgen Inc. | $80.28 | 3 |
| Ascendis Pharma Endocrinology Inc | $28.28 | 1 |
| Novartis Pharmaceuticals Corporation | $26.71 | 1 |
What the 2025 payments were for
- Food and Beverage$507.83 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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