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Hematology/Oncology

Clan H. Hahn, MD

Works at hospitals in Los Angeles, CA · California

Summary

Clan H. Hahn, MD (Hematology/Oncology) is listed by Medicare at 2 hospitals in Los Angeles, CA. NPI 1023043189. 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 Clan H. Hahn, 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

Hematology/OncologyPrimary specialty
YesAccepts Medicare assignment
34Years since medical school (graduated 1992)
Loma Linda University School Of MedicineMedical school
MaleGender (as listed)

Quick answers

Which hospitals does Clan H. Hahn work at?
Medicare's official clinician data lists Clan H. Hahn at 2 hospitals: Hollywood Presbyterian Medical Center and PIH Health Good Samaritan Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Clan H. Hahn see patients?
Medicare's clinician data lists 1 practice location in Los Angeles, CA. Call before your visit to confirm the address.
What is Clan H. Hahn's specialty?
Medicare lists Hematology/Oncology as the primary specialty.
Does Clan H. Hahn accept Medicare assignment?
Yes. Medicare's clinician data says Clan H. Hahn 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 Clan H. Hahn?
(213) 277-1700, as listed in official Medicare / NPI Registry data.
What is Clan H. Hahn's NPI number?
1023043189. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Clan H. Hahn works

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

Specialties

Find other Hematology/Oncology doctors in California →

Other hematologist-oncologists in Los Angeles

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

All hematologist-oncologists in Los Angeles →

Clinician information

CredentialMD
Medical schoolLoma Linda University School Of Medicine
Graduation year1992
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1023043189
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