Shammah Ontario Nehemiah Williams, M.D.
NPI 1134419427ActiveIndividual· Internal Medicine, Interventional Cardiology· Loma Linda, CA
Internal Medicine, Interventional Cardiology (M.D.) with Faculty Physicians and Surgeons of Llusm and 2 other groups, practicing in Loma Linda, California. In 2024 Medicare paid $29,057 for 289 patients, and Part D covered 175 of their prescriptions, 73% of them generic. Boston Scientific Corporation was the largest of 2 companies reporting payments in 2025, $159.79 in all, mostly food and beverage. Lists Arrowhead Regional Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1134419427 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 8, 2011 |
| Last updated in NPPES | Jul 21, 2022 |
| Certified by provider | Jun 30, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | A129581 | CA |
| Internal Medicine | 207R00000X | A129581 | CA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | A129581 | 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 - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 289 |
|---|---|
| Services billed | 467 across 42 procedure codes |
| Paid by Medicare | $29,057 |
Part D prescriptions in 2024
| Prescriptions (claims) | 175 · 338 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $32,582 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical groups
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
- Sac Health SystemSan Bernardino, CA · 227 clinicians
- County of RiversideIndio, CA · 193 clinicians
Hospital affiliations
- Arrowhead Regional Medical CenterColton, CA
- Loma Linda University Medical CenterLoma Linda, CA
- Riverside University Health System-Medical CenterMoreno Valley, CA
Industry payments (Open Payments)
- 2025$159.79 · 2 payments from 2 companies
- 2024$888.10 · 17 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $141.67 | 1 |
| Medtronic, Inc. | $18.12 | 1 |
What the 2025 payments were for
- Food and Beverage$159.79 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Interventional Cardiology providers in Loma Linda
- 1508038597
- 1871729822
- 1083980486
- 1023541232
- 1841262623
- 1336583301
- 1073531802
- 1316206832
- 1295754711
- 1932363132
- 1558528372
- 1801835111
All Internal Medicine, Interventional Cardiology providers in California →