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Internal Medicine

Joanne Jee Yeon Lee, MD

Works at hospitals in San Francisco, CA · Santa Rosa, CA · California

Summary

Dr. Joanne Jee Yeon Lee, MD is an internal medicine doctor at 1101 Van Ness Ave, San Francisco, CA 94109. Phone: (415) 485-8824. Accepts Medicare assignment. In 2024, Joanne Jee Yeon Lee had 135 Original Medicare patients and 333 services. NPI 1871171553. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Joanne Jee Yeon Lee, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Joanne Jee Yeon Lee accept Medicare assignment?
Yes. Medicare's clinician data says Joanne Jee Yeon Lee accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Joanne Jee Yeon Lee see?
In 2024, CMS data shows 135 Original Medicare patients and 333 services for Joanne Jee Yeon Lee. This counts Original Medicare only and measures volume, not quality.
What is Joanne Jee Yeon Lee's NPI number?
1871171553. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Joanne Jee Yeon Lee, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients135
Services billed to Medicare333
Different services or procedures8
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)205 services
  2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)64 services
  3. Hospital discharge day management, more than 30 minutes (99239)53 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol70%
  • Arthritis50%
  • Ischemic heart disease41%
  • Anxiety40%
  • Depression39%

Hospitals where Joanne Jee Yeon Lee works

Medicare's Facility Affiliation Data lists Joanne Jee Yeon Lee at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Joanne Jee Yeon Lee is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Joanne Jee Yeon Lee as a member of this group (CMS data updated October 2, 2026).

  • Pacific Inpatient Medical Group132 clinicians in the group

Specialties

Find other Internal Medicine doctors in California →

Other internal medicine doctors in San Francisco

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

All internal medicine doctors in San Francisco →

Other clinicians in Pacific Inpatient Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Medical schoolLoma Linda University School Of Medicine
Graduation year2021 (5 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1871171553
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 October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians