Juan Z. Montes, M.D.
NPI 1548353055ActiveIndividual· Internal Medicine· Whittier, CA
Internal Medicine (M.D.) in Whittier, California, trained at Harvard Medical School (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $1,631,024 for 13,473 claims, against $169,016 paid for services in 2024. Novo Nordisk Inc was the largest of 21 companies reporting payments in 2025, $1,072 in all, mostly food and beverage.
Overview
| NPI | 1548353055 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 2, 2006 |
| Last updated in NPPES | Apr 7, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G35182 | CA |
| Internal Medicine, Addiction Medicine | 207RA0401X | G35182 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 311 |
|---|---|
| Services billed | 3,962 across 44 procedure codes |
| Paid by Medicare | $169,016 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,473 · 31,114 30-day fills |
|---|---|
| Patients | 1,022 |
| Total drug cost | $1,631,024 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Montes Medical Group IncInglewood, CA · 3 clinicians
Hospital affiliation
- Pih Health Hospital-WhittierWhittier, CA
Other facilities
- Emc Home Health Providers, IncHome health agency · La Palma, CA
- St Luke's Home Health Services, IncHome health agency · Buena Park, CA
Industry payments (Open Payments)
- 2025$1,072 · 46 payments from 21 companies
- 2024$1,192 · 54 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $185.74 | 8 |
| Pfizer Inc. | $135.40 | 5 |
| Amgen Inc. | $100.06 | 5 |
| Glaxosmithkline, LLC. | $69.74 | 3 |
| Bayer Healthcare Pharmaceuticals Inc. | $68.41 | 3 |
What the 2025 payments were for
- Food and Beverage$1,040 · 45 payments
- Education$32.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 55 internal medicine physicians in Whittier · All internal medicine physicians in California