There are 12 Internal Medicine clinicians in Upland, CA in Medicare’s data, ranked by the number of Medicare services they provide.
Internal Medicine clinicians in Upland
| Clinician | Experience | Telehealth | Medicare patients | Assignment |
|---|---|---|---|---|
| Susan Biegel, M.D. | 38 yrs | Yes | 323 | Accepts |
| Tan Nguyen, M.D. | 35 yrs | — | 309 | Accepts |
| Jalal Badday, M.D. | 48 yrs | Yes | 409 | Accepts |
| Michael Chai, M.D. | 32 yrs | Yes | 337 | Accepts |
| Tejinder Singh, MD | 48 yrs | — | 335 | Accepts |
| Ythanh Nguyen, MD | 24 yrs | — | 156 | Accepts |
| Jeannette Benjamin, M.D. | 49 yrs | — | 110 | Accepts |
| Sarina Kular, M.D. | 40 yrs | Yes | 99 | Accepts |
| Sara Khan, MD | 24 yrs | — | 43 | Accepts |
| Ahmed Al-Waisi | 19 yrs | — | 38 | Accepts |
| Sadia Moinuddin, MD | 15 yrs | Yes | 94 | Accepts |
| David Engelhardt, M.D. | — | — | 40 | Accepts |
What the columns mean
- Experience — years since the clinician’s medical-school graduation (when known).
- Telehealth — the clinician reported providing telehealth (video/phone) visits.
- Medicare patients — distinct Original-Medicare beneficiaries in the latest year; a volume signal, not a quality rating.
- Assignment — “Accepts” means they accept the Medicare-approved amount as full payment (lower out-of-pocket for Medicare patients).
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Source: CMS Medicare Physician & Other Practitioners and the Doctors & Clinicians National Downloadable File (most recent release). Counts reflect Original Medicare activity only and are not a measure of quality. “Medicare allows” is the Medicare fee schedule amount — not what an insured or cash patient pays; for patient prices see the linked procedure pages. Always confirm a clinician’s current details with their office.