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

Internal Medicine

Karen Lin, MD

Works at hospitals in Birmingham, AL · Alabama

Summary

Karen Lin, MD (Internal Medicine) is listed by Medicare at 1 hospital in Birmingham, AL. NPI 1538666813. 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 Karen 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

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
9Years since medical school (graduated 2017)
FemaleGender (as listed)
Oak Mountain Group Services, LLCGroup practice

Quick answers

Which hospitals does Karen Lin work at?
Medicare's official clinician data lists Karen Lin at 1 hospital: Grandview Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Karen Lin see patients?
Medicare's clinician data lists 1 practice location in Birmingham, AL. Call before your visit to confirm the address.
What is Karen Lin's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Karen Lin accept Medicare assignment?
Yes. Medicare's clinician data says Karen 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 Karen Lin?
(205) 971-1000, as listed in official Medicare / NPI Registry data.
What is Karen Lin's NPI number?
1538666813. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Karen Lin works

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

Group practices

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

  • Oak Mountain Group Services, LLC61 clinicians in the group

Specialties

Find other Internal Medicine doctors in Alabama →

Other internal medicine doctors in Birmingham

Clinicians with the same Medicare primary specialty in Birmingham, AL — not a recommendation.

All internal medicine doctors in Birmingham →

Clinician information

CredentialMD
Graduation year2017
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1538666813
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