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Colorectal Surgery (Proctology)

Joseph Lin, MD

Sees patients in South San Francisco, CA · California

Summary

Joseph Lin, MD (Colorectal Surgery (Proctology)) is enrolled with Medicare at 1 practice location in South San Francisco, CA. NPI 1154660918. Medicare data says the clinician accepts Medicare assignment. Source: CMS National Downloadable File, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Joseph Lin, 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

Colorectal Surgery (Proctology)Primary specialty
YesAccepts Medicare assignment
10Years since medical school (graduated 2016)
Johns Hopkins University School Of MedicineMedical school
MaleGender (as listed)
Permanente Medical Group IncGroup practice

Quick answers

Where does Joseph Lin see patients?
Medicare's clinician data lists 1 practice location in South San Francisco, CA. Call before your visit to confirm the address.
What is Joseph Lin's specialty?
Medicare lists Colorectal Surgery (Proctology) as the primary specialty, and also General Surgery.
Does Joseph Lin accept Medicare assignment?
Yes. Medicare's clinician data says Joseph Lin 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.
What is the phone number for Joseph Lin?
(650) 742-2000, as listed in official Medicare / NPI Registry data.
What is Joseph Lin's NPI number?
1154660918. 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 Joseph Lin is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Joseph Lin as a member of this group (CMS data updated 2026-10-02).

  • Permanente Medical Group Inc10,996 clinicians in the group

Specialties

Find other Colorectal Surgery (Proctology) doctors in California →

Other colorectal surgeons in California

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

All colorectal surgeons in California →

Clinician information

CredentialMD
Medical schoolJohns Hopkins University School Of Medicine
Graduation year2016
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1154660918
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