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Internal Medicine

Yiwey Shieh, MD

Works at hospitals in New York, NY · New York

Summary

Dr. Yiwey Shieh, MD is an internal medicine doctor at 505 E 70th St, New York, NY 10021. Phone: (212) 746-2917. Accepts Medicare assignment. In 2024, Yiwey Shieh had 60 Original Medicare patients and 109 services. NPI 1689935231. 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.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 505 E 70th St, New York, NY 10021 · Directions
  • Phone: (212) 746‑2917
  • Medicare: Accepts Medicare assignment
  • Hospital: New York-Presbyterian Hospital
  • Group practice: Weill Medical College of Cornell
  • Medical school: University Of California, San Francisco School Of Medicine · graduated 2012 (14 years since medical school)
  • Gender (as listed): Male
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Yiwey Shieh, 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 Yiwey Shieh accept Medicare assignment?
Yes. Medicare's clinician data says Yiwey Shieh 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 Yiwey Shieh see?
In 2024, CMS data shows 60 Original Medicare patients and 109 services for Yiwey Shieh. This counts Original Medicare only and measures volume, not quality.
What is Yiwey Shieh's NPI number?
1689935231. 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 Yiwey Shieh, 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 patients60
Services billed to Medicare109
Different services or procedures10
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)33 services
  2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)24 services
  3. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)24 services
  4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)12 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 cholesterol65%
  • High blood pressure63%
  • Arthritis53%
  • Osteoporosis30%
  • Ischemic heart disease27%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)22%

Hospitals where Yiwey Shieh works

Medicare's Facility Affiliation Data lists Yiwey Shieh 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 Yiwey Shieh is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Yiwey Shieh as a member of this group (CMS data updated October 2, 2026).

  • Weill Medical College of Cornell2,051 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in New York

Clinicians with the same Medicare primary specialty in New York, NY — not a recommendation.

All internal medicine doctors in New York →

Other clinicians in Weill Medical College of Cornell

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

Clinician information

CredentialMD
Medical schoolUniversity Of California, San Francisco School Of Medicine
Graduation year2012 (14 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1689935231
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