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Obstetrics/Gynecology

Erin C. Gertz, MD

Works at hospitals in Wellsville, NY · New York

Summary

Dr. Erin C. Gertz, MD is an OB-GYN at 191 N Main St, Wellsville, NY 14895. Phone: (585) 596-0145. Accepts Medicare assignment. In 2024, Erin C. Gertz had 18 Original Medicare patients and 34 services. NPI 1740436062. 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: OB-GYN (Medicare lists Obstetrics/Gynecology)
  • Address: 191 N Main St, Wellsville, NY 14895 · Directions (3 more locations)
  • Phone: (585) 596‑0145
  • Medicare: Accepts Medicare assignment
  • Hospital: Jones Memorial Hospital
  • Group practice: The Fort Defiance Indian Hospital Board, Incorporation (+2 more)
  • Medical school: University Of Hawaii John A. Burns School Of Medicine · graduated 2008 (18 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Erin C. Gertz, 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 Erin C. Gertz accept Medicare assignment?
Yes. Medicare's clinician data says Erin C. Gertz 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 Erin C. Gertz see?
In 2024, CMS data shows 18 Original Medicare patients and 34 services for Erin C. Gertz. This counts Original Medicare only and measures volume, not quality.
What is Erin C. Gertz's NPI number?
1740436062. 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 Erin C. Gertz, 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 patients18
Services billed to Medicare34
Different services or procedures10
Participating Medicare providerYes
Average age of these patients62

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)13 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 cholesterol61%

Hospitals where Erin C. Gertz works

Medicare's Facility Affiliation Data lists Erin C. Gertz 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.

  • Jones Memorial HospitalWellsville, NY · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 330096

Practice locations

Addresses where Erin C. Gertz is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Erin C. Gertz as a member of these groups (CMS data updated October 2, 2026).

  • The Fort Defiance Indian Hospital Board, Incorporation151 clinicians in the group
  • Bristol Hospital Multi Specialty Group, Inc.148 clinicians in the group
  • The Memorial Hospital of William F and Gertrude F Jones Inc127 clinicians in the group

Specialties

Find other Obstetrics/Gynecology doctors in New York →

Other OB-GYNs in Wellsville

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

All OB-GYNs in Wellsville →

Other clinicians in The Fort Defiance Indian Hospital Board, Incorporation

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

Clinician information

CredentialMD
Medical schoolUniversity Of Hawaii John A. Burns School Of Medicine
Graduation year2008 (18 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1740436062
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