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General Surgery

Sang I. Pak, MD

Works at hospitals in Stony Brook, NY · New York

Summary

Dr. Sang I. Pak, MD is a general surgeon at 201 Manor Pl, Greenport, NY 11944. Phone: (631) 726-8717. Accepts Medicare assignment. In 2024, Sang I. Pak had 152 Original Medicare patients and 420 services. NPI 1689680019. 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: General surgeon (Medicare lists General Surgery)
  • Address: 201 Manor Pl, Greenport, NY 11944 · Directions (4 more locations)
  • Phone: (631) 726‑8717
  • Medicare: Accepts Medicare assignment
  • Hospital: Suny/Stony Brook University Hospital
  • Group practice: Meeting House Lane Medical Practice PC
  • Medical school: New York Medical College · graduated 1990 (36 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Sang I. Pak, 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 Sang I. Pak accept Medicare assignment?
Yes. Medicare's clinician data says Sang I. Pak 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 Sang I. Pak see?
In 2024, CMS data shows 152 Original Medicare patients and 420 services for Sang I. Pak. This counts Original Medicare only and measures volume, not quality.
What is Sang I. Pak's NPI number?
1689680019. 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 Sang I. Pak, 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 patients152
Services billed to Medicare420
Different services or procedures36
Participating Medicare providerYes
Average age of these patients80

Most frequent services

  1. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)123 services
  2. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)69 services
  3. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)60 services
  4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)14 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 cholesterol75%
  • Arthritis49%
  • Ischemic heart disease41%
  • Diabetes34%
  • Anxiety34%

Hospitals where Sang I. Pak works

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

Group practices

Medicare enrollment lists Sang I. Pak as a member of this group (CMS data updated October 2, 2026).

  • Meeting House Lane Medical Practice PC124 clinicians in the group

Specialties

Find other General Surgery doctors in New York →

Other general surgeons in New York

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

All general surgeons in New York →

Other clinicians in Meeting House Lane Medical Practice PC

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

Clinician information

CredentialMD
Medical schoolNew York Medical College
Graduation year1990 (36 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1689680019
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