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Otolaryngology

Cynthia R. Hayes, DO

Works at hospitals in Grand Blanc, MI · Michigan

Summary

Dr. Cynthia R. Hayes, DO is an ENT doctor at 3455 Regency Park Dr, Grand Blanc, MI 48439. Phone: (810) 694-0600. Accepts Medicare assignment. In 2024, Cynthia R. Hayes had 263 Original Medicare patients and 794 services. NPI 1285927244. 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: ENT doctor (Medicare lists Otolaryngology)
  • Address: 3455 Regency Park Dr, Grand Blanc, MI 48439 · Directions
  • Phone: (810) 694‑0600
  • Medicare: Accepts Medicare assignment
  • Hospital: Ascension Genesys Hospital
  • Group practice: Ear, Nose, Throat and Plastic Surgery Associates, P.C.
  • Medical school: At Still University Of Health Sciences, College Of Osteo Med, Kirksville · graduated 2011 (15 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Cynthia R. Hayes, 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 Cynthia R. Hayes accept Medicare assignment?
Yes. Medicare's clinician data says Cynthia R. Hayes 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 Cynthia R. Hayes see?
In 2024, CMS data shows 263 Original Medicare patients and 794 services for Cynthia R. Hayes. This counts Original Medicare only and measures volume, not quality.
What is Cynthia R. Hayes's NPI number?
1285927244. 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 Cynthia R. Hayes, 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 patients263
Services billed to Medicare794
Different services or procedures40
Participating Medicare providerYes
Average age of these patients74

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. Removal of impacted ear wax (69210)106 services
  3. Test to assess middle ear function (92567)95 services
  4. Comprehensive hearing and speech recognition test (92557)92 services
  5. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)70 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%
  • Arthritis58%
  • Chronic kidney disease32%
  • Diabetes29%
  • Anxiety29%

Hospitals where Cynthia R. Hayes works

Medicare's Facility Affiliation Data lists Cynthia R. Hayes 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.

  • Ascension Genesys HospitalGrand Blanc, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230197

Practice locations

Addresses where Cynthia R. Hayes is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Cynthia R. Hayes as a member of this group (CMS data updated October 2, 2026).

  • Ear, Nose, Throat and Plastic Surgery Associates, P.C.7 clinicians in the group

Specialties

Find other Otolaryngology doctors in Michigan →

Other ENT doctors in Grand Blanc

Clinicians with the same Medicare primary specialty in Grand Blanc, MI — not a recommendation.

All ENT doctors in Grand Blanc →

Other clinicians in Ear, Nose, Throat and Plastic Surgery Associates, P.C.

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

Clinician information

CredentialDO
Medical schoolAt Still University Of Health Sciences, College Of Osteo Med, Kirksville
Graduation year2011 (15 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1285927244
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