1. Home
  2. Directory
  3. Florida
  4. Melbourne
  5. Anesthesiologist Assistant
  6. NPI Profile

MR. MICHAEL PATRICK GRENON III
NPI 1174412332
Anesthesiologist Assistant in Melbourne, FL

Active since July 01, 2025Accepts Medicare Assignment
1350 SOUTH HICKORY ST, MELBOURNE, FL 32901(321) 434-7145(321) 434-1656 Get Directions Write a Review

NPPES record last updated: July 1, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mr. Michael Patrick Grenon Iii NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. MICHAEL PATRICK GRENON III (NPI 1174412332) is an individual anesthesiologist assistant in Melbourne, Florida and active in the NPI registry since July 2025. He is affiliated with Holmes Regional Medical Center and is a graduate of Other (2025).

NPPES Registry Identity

NPI1174412332
Entity TypeIndividualMale
Primary Taxonomy367H00000X
Provider Legal NameMR. MICHAEL PATRICK GRENON III
Location Address1350 SOUTH HICKORY STMelbourne, FL 32901
Mailing Address112 Sea Breeze CirMerritt Island, FL 32953-2947
Phone(321) 434-7145
Fax(321) 434-1656
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateJuly 1, 2025
NPPES CertifiedJuly 1, 2025
✔ NPI 1174412332 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367H00000X
Definition
An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.
1350 SOUTH HICKORY ST, Melbourne, FL 32901
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Cigna Healthcare, Cigna HealthCare of Florida, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mr. Michael Patrick Grenon Iii is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3577055151
PECOS Enrollment IDI20251121000107

Medicare Billing Reassignment

Medicare enrollment records show Michael Grenon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Brevard Physician Associates, PLLC
2.1 mi
Anesthesiology
1775 W HIBISCUS BLVD STE 215
Melbourne, FL 32901
  • Reassigned Medicare billing, Florida enrollment
  • 378 clinicians in this Medicare group
NPI 1598008955 (321) 837-3820

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Holmes Regional Medical Center

Acute Care Hospitals · Melbourne, FL
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100019
Location1350 S Hickory StMelbourne, FL 32901 · Brevard County
Emergency services Birthing friendly

Cape Canaveral Hospital

Acute Care Hospitals · Cocoa Beach, FL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100177
Location701 W Cocoa Beach CausewayCocoa Beach, FL 32932 · Brevard County
Emergency services Birthing friendly

Viera Hospital

Acute Care Hospitals · Melbourne, FL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number100315
Location8745 N Wickham RdMelbourne, FL 32940 · Brevard County
Emergency services

Palm Bay Hospital

Acute Care Hospitals · Palm Bay, FL
4/5 CMS rating
OwnershipProprietary
CMS Certification Number100316
Location1425 Malabar Rd, NEPalm Bay, FL 32907 · Brevard County
Emergency services

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

NICOLE BROWN
Social Worker (Clinical)
1350 SOUTH HICKORY ST
MELBOURN, FL 32901
Brevard County (941) 979-1230
MRS. SARA VIRGINIA HAGLER PA-C
Physician Assistant
1350 SOUTH HICKORY ST, HOLMES REG MED CENTER
MELBOURNE, FL 32901
Brevard County (321) 434-7000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Grenon's NPI number?

The NPI number for Michael Grenon is 1174412332. It was assigned to this individual provider in the NPPES registry on July 1, 2025.

Where is Michael Grenon located?

Michael Grenon practices at 1350 South Hickory St, Melbourne, FL 32901. The listed phone number is (321) 434-7145.

What is Michael Grenon's specialty?

The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.

Is Michael Grenon enrolled in Medicare?

Yes. Michael Grenon is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Michael Grenon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Grenon reassigns Medicare benefits to Brevard Physician Associates, PLLC (Melbourne, FL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Grenon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Michael Grenon accept?

Health plans from Cigna HealthCare of Florida, Inc. and Cigna Healthcare list Michael Grenon as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Michael Grenon affiliated with any hospitals?

According to CMS data, Michael Grenon is affiliated with Holmes Regional Medical Center, Cape Canaveral Hospital, Viera Hospital and Palm Bay Hospital.

When was this NPI record last updated?

The NPPES record for Michael Grenon was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.