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Gastroenterology

Long P. Dang, MD

Works at hospitals in Fountain Valley, CA · Orange, CA · California

Summary

Long P. Dang, MD (Gastroenterology) is listed by Medicare at 2 hospitals in Fountain Valley, CA and Orange, CA. NPI 1346324613. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Long P. Dang, 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

GastroenterologyPrimary specialty
May acceptAccepts Medicare assignment
33Years since medical school (graduated 1993)
Loyola University Of Chicago, Stritch School Of MedicineMedical school
MaleGender (as listed)

Quick answers

Which hospitals does Long P. Dang work at?
Medicare's official clinician data lists Long P. Dang at 2 hospitals: Memorialcare Orange Coast Medical Center and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Long P. Dang see patients?
Medicare's clinician data lists 1 practice location in Westminster, CA. Call before your visit to confirm the address.
What is Long P. Dang's specialty?
Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
Does Long P. Dang accept Medicare assignment?
Medicare's clinician data says Long P. Dang may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
What is the phone number for Long P. Dang?
(714) 839-9091, as listed in official Medicare / NPI Registry data.
What is Long P. Dang's NPI number?
1346324613. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Long P. Dang works

Medicare's Facility Affiliation Data lists Long P. Dang 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 Long P. Dang is enrolled with Medicare (CMS data updated 2026-10-02).

Specialties

Find other Gastroenterology doctors in California →

Other gastroenterologists in California

Clinicians with the same Medicare primary specialty in California — not a recommendation.

All gastroenterologists in California →

Clinician information

CredentialMD
Medical schoolLoyola University Of Chicago, Stritch School Of Medicine
Graduation year1993
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1346324613
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