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Medical Oncology

Ralph G. Zinner, MD

Works at hospitals in Lexington, KY · Kentucky

Summary

Dr. Ralph G. Zinner, MD is an oncologist at 800 Rose St, Lexington, KY 40536. Phone: (859) 323-5000. Accepts Medicare assignment. In 2024, Ralph G. Zinner had 103 Original Medicare patients and 358 services. NPI 1326132457. 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: Oncologist (Medicare lists Medical Oncology)
  • Address: 800 Rose St, Lexington, KY 40536 · Directions
  • Phone: (859) 323‑5000
  • Medicare: Accepts Medicare assignment
  • Hospital: University of Kentucky Hospital
  • Group practice: Kentucky Medical Services Foundation, Inc
  • Medical school: graduated 1993 (33 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Ralph G. Zinner, 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 Ralph G. Zinner accept Medicare assignment?
Yes. Medicare's clinician data says Ralph G. Zinner 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 Ralph G. Zinner see?
In 2024, CMS data shows 103 Original Medicare patients and 358 services for Ralph G. Zinner. This counts Original Medicare only and measures volume, not quality.
What is Ralph G. Zinner's NPI number?
1326132457. 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 Ralph G. Zinner, 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 patients103
Services billed to Medicare358
Different services or procedures10
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)209 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)82 services
  3. New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)24 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)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%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
  • High cholesterol73%
  • COPD50%
  • Arthritis44%
  • Ischemic heart disease40%

Hospitals where Ralph G. Zinner works

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

Group practices

Medicare enrollment lists Ralph G. Zinner as a member of this group (CMS data updated October 2, 2026).

  • Kentucky Medical Services Foundation, Inc967 clinicians in the group

Specialties

Find other Medical Oncology doctors in Kentucky →

Other oncologists in Lexington

Clinicians with the same Medicare primary specialty in Lexington, KY — not a recommendation.

All oncologists in Lexington →

Other clinicians in Kentucky Medical Services Foundation, Inc

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

Clinician information

CredentialMD
Graduation year1993 (33 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1326132457
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