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General Surgery

Buu Anh T. To, MD

Works at hospitals in Corning, NY · New York

Summary

Dr. Buu Anh T. To, MD is a general surgeon at 3 Guthrie Dr, Corning, NY 14830. Phone: (607) 973-8000. Accepts Medicare assignment. In 2024, Buu Anh T. To had 125 Original Medicare patients and 223 services. NPI 1639581861. 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: 3 Guthrie Dr, Corning, NY 14830 · Directions
  • Phone: (607) 973‑8000
  • Medicare: Accepts Medicare assignment
  • Hospital: Corning Hospital
  • Group practice: Guthrie Medical Group PC
  • Medical school: graduated 2014 (12 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Buu Anh T. To, 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 Buu Anh T. To accept Medicare assignment?
Yes. Medicare's clinician data says Buu Anh T. To 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 Buu Anh T. To see?
In 2024, CMS data shows 125 Original Medicare patients and 223 services for Buu Anh T. To. This counts Original Medicare only and measures volume, not quality.
What is Buu Anh T. To's NPI number?
1639581861. 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 Buu Anh T. To, 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 patients125
Services billed to Medicare223
Different services or procedures35
Participating Medicare providerYes
Average age of these patients73

Most frequent services

  1. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)29 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)24 services
  3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)19 services
  4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)17 services
  5. Removal of gallbladder using an endoscope (47562)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 blood pressure75%
  • High cholesterol75%
  • Arthritis43%
  • Diabetes35%
  • Atrial fibrillation27%
  • Ischemic heart disease23%

Hospitals where Buu Anh T. To works

Medicare's Facility Affiliation Data lists Buu Anh T. To 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.

  • Corning HospitalCorning, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330277

Practice locations

Addresses where Buu Anh T. To is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Buu Anh T. To as a member of this group (CMS data updated October 2, 2026).

  • Guthrie Medical Group PC795 clinicians in the group

Specialties

Find other General Surgery doctors in New York →

Other general surgeons in Corning

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

All general surgeons in Corning →

Other clinicians in Guthrie Medical Group PC

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

Clinician information

CredentialMD
Graduation year2014 (12 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1639581861
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