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

Internal Medicine

Gihan S. Farag, MD

Works at hospitals in Vallejo, CA · California

Summary

Gihan S. Farag, MD (Internal Medicine) is listed by Medicare at 1 hospital in Vallejo, CA. NPI 1811075641. 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 Gihan S. Farag, 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
37Years since medical school (graduated 1989)
FemaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Which hospitals does Gihan S. Farag work at?
Medicare's official clinician data lists Gihan S. Farag at 1 hospital: Kaiser Foundation Hospital and Rehab Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Gihan S. Farag see patients?
Medicare's clinician data lists 1 practice location in Vallejo, CA. Call before your visit to confirm the address.
What is Gihan S. Farag's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Gihan S. Farag accept Medicare assignment?
Yes. Medicare's clinician data says Gihan S. Farag 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 Gihan S. Farag offer telehealth?
Medicare's clinician data says Gihan S. Farag offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Gihan S. Farag?
(707) 651-1000, as listed in official Medicare / NPI Registry data.
What is Gihan S. Farag's NPI number?
1811075641. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Gihan S. Farag works

Medicare's Facility Affiliation Data lists Gihan S. Farag 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 Gihan S. Farag is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Gihan S. Farag as a member of this group (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in Vallejo

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

All internal medicine doctors in Vallejo →

Clinician information

CredentialMD
Graduation year1989
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1811075641
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