Cynthia G. Rivas Pajuelo, MD
NPI 1669967154ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Tucson, AZ
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Tmc Medical Network and 1 other group, practicing in Tucson, Arizona. Their prescriptions cost Medicare Part D more than their services did: $1,101,801 for 2,208 claims, against $29,045 paid for services in 2024. Amgen Inc. was the largest of 22 companies reporting payments in 2025, $1,588 in all, mostly food and beverage. Lists Tucson Medical Center as a hospital affiliation.
Overview
| NPI | 1669967154 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 27, 2018 |
| Last updated in NPPES | Aug 30, 2023 |
| Certified by provider | Aug 30, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 68071 | AZ |
| Internal Medicine | 207R00000X | 68071 | AZ |
| 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 (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 183 |
|---|---|
| Services billed | 443 across 12 procedure codes |
| Paid by Medicare | $29,045 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,208 · 4,855 30-day fills |
|---|---|
| Patients | 423 |
| Total drug cost | $1,101,801 |
| Generic share | 34% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Tmc Medical NetworkTucson, AZ · 281 clinicians
- TmconeGreen Valley, AZ · 96 clinicians
Hospital affiliation
- Tucson Medical CenterTucson, AZ
Industry payments (Open Payments)
- 2025$1,588 · 55 payments from 22 companies
- 2024$1,823 · 73 payments from 23 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $209.05 | 5 |
| Neurocrine Biosciences, Inc. | $179.66 | 3 |
| Sequel Med Tech, LLC | $177.55 | 2 |
| Lilly USA, LLC | $173.73 | 6 |
| Sanofi-Aventis U.S. LLC | $126.05 | 4 |
What the 2025 payments were for
- Food and Beverage$1,588 · 55 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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