Doris Derwen Ling, M.D.
NPI 1851338420ActiveIndividual· Family Medicine· San Antonio, TX
Family Medicine (M.D.) in San Antonio, Texas, trained at University of Texas Medical School at San Antonio (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $282,063 for 3,493 claims, against $40,154 paid for services in 2024. Abbvie Inc. was the largest of 12 companies reporting payments in 2024, $667.91 in all, mostly food and beverage.
Overview
| NPI | 1851338420 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 1, 2006 |
| Last updated in NPPES | Oct 4, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | K2741 | 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 - Family Practice (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 162 |
|---|---|
| Services billed | 1,006 across 27 procedure codes |
| Paid by Medicare | $40,154 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,493 · 8,857 30-day fills |
|---|---|
| Patients | 282 |
| Total drug cost | $282,063 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Bhs Physicians Network, IncBrownsville, TX · 706 clinicians
Hospital affiliation
- Baptist Medical CenterSan Antonio, TX
Industry payments (Open Payments)
- 2024$667.91 · 37 payments from 12 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $181.40 | 8 |
| Astrazeneca Pharmaceuticals LP | $131.30 | 9 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $72.82 | 5 |
| Bayer Healthcare Pharmaceuticals Inc. | $45.10 | 2 |
| Almatica Pharma LLC | $44.34 | 2 |
What the 2024 payments were for
- Food and Beverage$667.91 · 37 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 1,086 family medicine physicians in San Antonio · All family medicine physicians in Texas