Jianyu Xu, M.D.
NPI 1538499934ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Concord, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with John Muir Physician Network, practicing in Concord, California. Their prescriptions cost Medicare Part D more than their services did: $2,242,699 for 4,001 claims, against $776,815 paid for services in 2024. Amgen Inc. was the largest of 28 companies reporting payments in 2025, $3,330 in all, mostly food and beverage. Lists John Muir Medical Center - Concord Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1538499934 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 6, 2010 |
| Last updated in NPPES | Oct 29, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A141505 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 642 |
|---|---|
| Services billed | 58,566 across 24 procedure codes |
| Paid by Medicare | $776,815 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,001 · 10,105 30-day fills |
|---|---|
| Patients | 596 |
| Total drug cost | $2,242,699 |
| Generic share | 47% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| 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
Industry payments (Open Payments)
- 2025$3,330 · 128 payments from 28 companies
- 2024$3,387 · 114 payments from 28 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $497.81 | 31 |
| Novo Nordisk Inc | $483.10 | 17 |
| Dexcom, Inc. | $401.40 | 5 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $249.36 | 10 |
| Beta Bionics, Inc. | $205.72 | 2 |
What the 2025 payments were for
- Food and Beverage$3,330 · 128 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other endocrinologists in Concord
- 1205150448
- 1699159939
- 1902068562
- 1285130096
- 1447506142
- 1992099154
- 1366460594