Marco Antonio Ayala, M.D.
NPI 1023089992ActiveIndividual· Otolaryngology· Carlsbad, CA
Otolaryngology (M.D.) with Sharp Rees-Stealy Medical Group Inc and 2 other groups, practicing in Carlsbad, California. 82 Medicare patients in 2024, $18,363 paid; nearly all of their 98 Part D prescriptions were generic (99%). Stryker Corporation was the largest of 2 companies reporting payments in 2025, $1,334 in all, mostly travel and lodging. Lists Scripps Memorial Hospital - Encinitas and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1023089992 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 30, 2006 |
| Last updated in NPPES | Dec 18, 2025 |
| Certified by provider | Dec 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Otolaryngology Primary | 207Y00000X | C186140 | 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 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 - Otolaryngology (CA); Practitioner - Otolaryngology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 82 |
|---|---|
| Services billed | 183 across 21 procedure codes |
| Paid by Medicare | $18,363 |
Part D prescriptions in 2024
| Prescriptions (claims) | 98 · 104 30-day fills |
|---|---|
| Patients | 62 |
| Total drug cost | $1,968 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Otolaryngology |
Medical groups
- Sharp Rees-Stealy Medical Group IncSan Diego, CA · 884 clinicians
- First Choice Physician PartnersPalm Springs, CA · 127 clinicians
- Ritvik Mehta MD APCCarlsbad, CA · 16 clinicians
Hospital affiliations
- Scripps Memorial Hospital - EncinitasEncinitas, CA
- Scripps Mercy HospitalSan Diego, CA
- Upmc AltoonaAltoona, PA
Industry payments (Open Payments)
- 2025$1,334 · 12 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $1,310 | 11 |
| Glaxosmithkline, LLC. | $24.21 | 1 |
What the 2025 payments were for
- Travel and Lodging$1,101 · 5 payments
- Food and Beverage$232.87 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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