Maya Christine Shammas, M.D.
NPI 1649438763ActiveIndividual· Ophthalmology· Lynwood, CA
Ophthalmology (M.D.) in Lynwood, California, trained at Js Weill Medical College, Cornell University (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $935,929 for 5,629 claims, against $148,443 paid for services in 2024. Alcon Vision LLC was the largest of 10 companies reporting payments in 2025, $2,027 in all, mostly food and beverage.
Overview
| NPI | 1649438763 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | May 27, 2008 |
| Last updated in NPPES | Aug 9, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A113118 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | 245279 | NY |
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 - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 419 |
|---|---|
| Services billed | 1,500 across 34 procedure codes |
| Paid by Medicare | $148,443 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,629 · 8,550 30-day fills |
|---|---|
| Patients | 1,150 |
| Total drug cost | $935,929 |
| Generic share | 59% of claims |
Education and affiliations
| Medical school | Js Weill Medical College, Cornell University |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Ophthalmology |
Medical group
- H Shammas MD IncLynwood, CA · 7 clinicians
Industry payments (Open Payments)
- 2025$2,027 · 50 payments from 10 companies
- 2024$2,727 · 49 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $980.82 | 12 |
| Amgen Inc. | $367.14 | 15 |
| Dompe US, Inc. | $181.90 | 7 |
| Tarsus Pharmaceuticals, Inc. | $135.82 | 5 |
| Alcon Research LLC | $128.19 | 1 |
What the 2025 payments were for
- Food and Beverage$1,477 · 49 payments
- Consulting Fee$550.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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