Leena Singh, MD, PHD
NPI 1033172689ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Chico, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD, PHD) with Feather River Tribal Health Inc and 1 other group, practicing in Chico, California. Their prescriptions cost Medicare Part D more than their services did: $1,336,461 for 3,784 claims, against $224,074 paid for services in 2024. Amgen Inc. was the largest of 20 companies reporting payments in 2025, $1,365 in all, mostly food and beverage. Lists Adventist Health Clearlake and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1033172689 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, PHD |
| Sole proprietor | No |
| NPI issued | Apr 6, 2006 |
| Last updated in NPPES | May 31, 2024 |
| Certified by provider | May 31, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A90422 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 515 |
|---|---|
| Services billed | 7,076 across 10 procedure codes |
| Paid by Medicare | $224,074 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,784 · 8,727 30-day fills |
|---|---|
| Patients | 444 |
| Total drug cost | $1,336,461 |
| Generic share | 47% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Feather River Tribal Health IncYuba City, CA · 29 clinicians
- Leena Singh MD IncChico, CA · 2 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Enloe HealthChico, CA
- Orchard HospitalGridley, CA
- Oroville HospitalOroville, CA
- St Elizabeth Community HospitalRed Bluff, CA
Industry payments (Open Payments)
- 2025$1,365 · 58 payments from 20 companies
- 2024$1,511 · 63 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $297.40 | 15 |
| Novo Nordisk Inc | $124.60 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $123.61 | 5 |
| Abbott Laboratories | $99.40 | 4 |
| Lilly USA, LLC | $97.54 | 4 |
What the 2025 payments were for
- Food and Beverage$1,365 · 58 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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