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Colorectal Surgery (Proctology)

Andreas M. Kaiser, MD

Sees patients in Irvine, CA · Duarte, CA · South Pasadena, CA · California

Summary

Andreas M. Kaiser, MD (Colorectal Surgery (Proctology)) is enrolled with Medicare at 4 practice locations in Irvine, CA, Duarte, CA and South Pasadena, CA. NPI 1720092679. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

Call(949) 671‑4673 NPI Registry record Medicare profile

From official Medicare data

This page shows what Medicare's official clinician data says about Andreas M. Kaiser, 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

4Practice locations
Colorectal Surgery (Proctology)Primary specialty
YesAccepts Medicare assignment
YesOffers telehealth
38Years since medical school (graduated 1988)
MaleGender (as listed)
City of Hope Medical FoundationGroup practice

Quick answers

Where does Andreas M. Kaiser see patients?
Medicare's clinician data lists 4 practice locations, including Irvine, CA, Duarte, CA and South Pasadena, CA. Call before your visit to confirm the address.
What is Andreas M. Kaiser's specialty?
Medicare lists Colorectal Surgery (Proctology) as the primary specialty, and also General Surgery.
Does Andreas M. Kaiser accept Medicare assignment?
Yes. Medicare's clinician data says Andreas M. Kaiser 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 Andreas M. Kaiser offer telehealth?
Medicare's clinician data says Andreas M. Kaiser offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Andreas M. Kaiser?
(949) 671-4673, as listed in official Medicare / NPI Registry data.
What is Andreas M. Kaiser's NPI number?
1720092679. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Practice locations

Addresses where Andreas M. Kaiser is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Andreas M. Kaiser as a member of this group (CMS data updated 2026-10-02).

  • City of Hope Medical Foundation982 clinicians in the group

Specialties

Find other Colorectal Surgery (Proctology) doctors in California →

Other colorectal surgeons in Irvine

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

All colorectal surgeons in Irvine →

Clinician information

CredentialMD
Graduation year1988
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1720092679
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  3. Medicare Care Compare — official Medicare tool to look up clinicians