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Internal Medicine

Kathleen A. Hallinan, MD

Works at hospitals in Elmira, NY · Corning, NY · Sayre, PA · New York, Pennsylvania

Summary

Dr. Kathleen A. Hallinan, MD is an internal medicine doctor at 125 Harry Howard Ave, Hudson, NY 12534. Phone: (800) 479-7695. May accept Medicare assignment. In 2024, Kathleen A. Hallinan had 320 Original Medicare patients and 1,621 services. NPI 1326039058. 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: 125 Harry Howard Ave, Hudson, NY 12534 · Directions (5 more locations)
  • Phone: (800) 479‑7695
  • Medicare: May accept Medicare assignment
  • Hospitals: Arnot Ogden Medical Center, Corning Hospital, Robert Packer Hospital
  • Group practice: Guthrie Medical Group PC (+1 more)
  • Medical school: State University Of Ny Upstate Medical University · graduated 1996 (30 years since medical school)
  • Gender (as listed): Female
  • Telehealth: offered

From official Medicare data

This page shows what Medicare's official clinician data says about Kathleen A. Hallinan, 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 Kathleen A. Hallinan accept Medicare assignment?
Medicare's clinician data says Kathleen A. Hallinan may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Kathleen A. Hallinan see?
In 2024, CMS data shows 320 Original Medicare patients and 1,621 services for Kathleen A. Hallinan. This counts Original Medicare only and measures volume, not quality.
What is Kathleen A. Hallinan's NPI number?
1326039058. 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 Kathleen A. Hallinan, 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 patients320
Services billed to Medicare1,621
Different services or procedures30
Participating Medicare providerYes
Average age of these patients76

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)489 services
  2. Insertion of needle into vein for collection of blood sample (36415)365 services
  3. Assessment of emotional or behavioral problems (96127)155 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)150 services
  5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)104 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 cholesterol71%
  • High blood pressure70%
  • Arthritis42%
  • Diabetes30%
  • Ischemic heart disease23%
  • Atrial fibrillation23%

Hospitals where Kathleen A. Hallinan works

Medicare's Facility Affiliation Data lists Kathleen A. Hallinan 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.

  • Arnot Ogden Medical CenterElmira, NY · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 330090
  • Corning HospitalCorning, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330277
  • Robert Packer HospitalSayre, PA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 390079

Practice locations

Addresses where Kathleen A. Hallinan is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.

Group practices

Medicare enrollment lists Kathleen A. Hallinan as a member of these groups (CMS data updated October 2, 2026).

  • Guthrie Medical Group PC795 clinicians in the group
  • Select PT, Ot and SLP Rehabilitation Ny, PLLC301 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Hudson

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

All internal medicine doctors in Hudson →

Other clinicians in Guthrie Medical Group PC

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

Clinician information

CredentialMD
Medical schoolState University Of Ny Upstate Medical University
Graduation year1996 (30 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1326039058
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