Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Al Jen Wang, MD

Works at hospitals in Upland, CA · California

Summary

Al Jen Wang, MD (Internal Medicine) is listed by Medicare at 1 hospital in Upland, CA. NPI 1326295288. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Al Jen Wang, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
28Years since medical school (graduated 1998)
FemaleGender (as listed)

Quick answers

Which hospitals does Al Jen Wang work at?
Medicare's official clinician data lists Al Jen Wang at 1 hospital: San Antonio Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Al Jen Wang see patients?
Medicare's clinician data lists 1 practice location in Upland, CA. Call before your visit to confirm the address.
What is Al Jen Wang's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Al Jen Wang accept Medicare assignment?
Yes. Medicare's clinician data says Al Jen Wang accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Al Jen Wang offer telehealth?
Medicare's clinician data says Al Jen Wang offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Al Jen Wang?
(909) 985-2811, as listed in official Medicare / NPI Registry data.
What is Al Jen Wang's NPI number?
1326295288. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Al Jen Wang works

Medicare's Facility Affiliation Data lists Al Jen Wang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Al Jen Wang is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Upland

Clinicians with the same Medicare primary specialty in Upland, CA — not a recommendation.

All internal medicine doctors in Upland →

Clinician information

CredentialMD
Graduation year1998
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1326295288
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians