Quick answers
- Does Taehyun Chung accept Medicare assignment?
- Yes. Medicare's clinician data says Taehyun Chung 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 Taehyun Chung see?
- In 2024, CMS data shows 222 Original Medicare patients and 366 services for Taehyun Chung. This counts Original Medicare only and measures volume, not quality.
- What is Taehyun Chung's NPI number?
- 1821170150. 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 Taehyun Chung, 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 patients | 222 |
|---|---|
| Services billed to Medicare | 366 |
| Different services or procedures | 51 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)50 services
- Injection of hemorrhoid (46500)43 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)30 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)30 services
- Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)28 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 cholesterol75%
- High blood pressure70%
- Arthritis43%
- Diabetes32%
- Chronic kidney disease28%
- Depression23%
Hospitals where Taehyun Chung works
Medicare's Facility Affiliation Data lists Taehyun Chung 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.
- California Pacific Medical Center - Mission BernalSan Francisco, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050055
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050047
- California Pacific Medical Center-Davies Campus HospitalSan Francisco, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050008
Practice locations
Addresses where Taehyun Chung is enrolled with Medicare (CMS data updated October 2, 2026).
- 1100 Van Ness AveSan Francisco, CA 94109 (415) 600‑0140
- 1100 Van Ness Ave, Suite 1040San Francisco, CA 94109 (415) 923‑3020
- 1520 Stockton StSan Francisco, CA 94133 (415) 391‑9686
- 3838 California St, Rm 616San Francisco, CA 94118 (415) 668‑0411
Group practices
Medicare enrollment lists Taehyun Chung as a member of these groups (CMS data updated October 2, 2026).
- Sutter Bay Medical Foundation3,829 clinicians in the group
- North East Medical Services143 clinicians in the group
- San Francisco Surgical5 clinicians in the group
Specialties
Find other Colorectal Surgery (Proctology) doctors in California →
Other colorectal surgeons in San Francisco
Clinicians with the same Medicare primary specialty in San Francisco, CA — not a recommendation.
Other clinicians in Sutter Bay Medical Foundation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Chicago, Pritzker School Of Medicine |
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1821170150 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians