Raquel De Leon Anel-Tiangco, M.D.
NPI 1740462803ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Sioux Falls, SD
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with Avera McKennan, practicing in Sioux Falls, South Dakota. Their prescriptions cost Medicare Part D more than their services did: $655,705 for 2,001 claims, against $42,040 paid for services in 2024. Amgen Inc. was the largest of 9 companies reporting payments in 2025, $260.99 in all, mostly food and beverage. Lists Avera Marshall Regional Medical Ctr and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1740462803 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 30, 2007 |
| Last updated in NPPES | Oct 11, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 8278 | SD |
| Internal Medicine | 207R00000X | MD435941 | PA |
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 (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 310 |
|---|---|
| Services billed | 836 across 13 procedure codes |
| Paid by Medicare | $42,040 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,001 · 3,543 30-day fills |
|---|---|
| Patients | 221 |
| Total drug cost | $655,705 |
| Generic share | 46% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical group
- Avera McKennanSioux Falls, SD · 959 clinicians
Hospital affiliations
- Avera Marshall Regional Medical CtrMarshall, MN
- Avera McKennan Hospital & University Health CenterSioux Falls, SD
- Avera Queen of PeaceMitchell, SD
- Avera St LukesAberdeen, SD
- Lakes Regional HealthcareSpirit Lake, IA
Industry payments (Open Payments)
- 2025$260.99 · 14 payments from 9 companies
- 2024$72.32 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $68.55 | 4 |
| Novartis Pharmaceuticals Corporation | $44.63 | 2 |
| Pfizer Inc. | $34.06 | 2 |
| Radius Health, Inc. | $25.47 | 1 |
| Chiesi USA, Inc. | $22.77 | 1 |
What the 2025 payments were for
- Food and Beverage$260.99 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Endocrinology, Diabetes & Metabolism providers in Sioux Falls
- 1396711016
- 1043598337
- 1841215654
- 1942230636
- 1578589677
- 1346625415
- 1124023882
- 1659375038
- 1700237914
- 1164528261
- 1588072532
- 1548139280
All Internal Medicine, Endocrinology, Diabetes & Metabolism providers in South Dakota →