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

Internal Medicine

Wei K. Kao, MD

Works at hospitals in Manhasset, NY · Riverhead, NY · Smithtown, NY … · New York

Summary

Wei K. Kao, MD (Internal Medicine) is listed by Medicare at 4 hospitals in Manhasset, NY, Riverhead, NY and Smithtown, NY and other places. NPI 1629295571. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Wei K. Kao, 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
May acceptAccepts Medicare assignment
43Years since medical school (graduated 1983)
MaleGender (as listed)
Preferred Professional Medical Care PCGroup practice (+1 more)

Quick answers

Which hospitals does Wei K. Kao work at?
Medicare's official clinician data lists Wei K. Kao at 4 hospitals: North Shore University Hospital, Peconic Bay Medical Center, St Catherine of Siena Hospital and Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Wei K. Kao see patients?
Medicare's clinician data lists 1 practice location in Ronkonkoma, NY. Call before your visit to confirm the address.
What is Wei K. Kao's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Wei K. Kao accept Medicare assignment?
Medicare's clinician data says Wei K. Kao may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
What is the phone number for Wei K. Kao?
(631) 676-7656, as listed in official Medicare / NPI Registry data.
What is Wei K. Kao's NPI number?
1629295571. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Wei K. Kao works

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

Group practices

Medicare enrollment lists Wei K. Kao as a member of these groups (CMS data updated 2026-10-02).

  • Preferred Professional Medical Care PC14 clinicians in the group
  • Home Medical Services PLLC3 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Ronkonkoma

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

All internal medicine doctors in Ronkonkoma →

Clinician information

CredentialMD
Graduation year1983
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1629295571
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