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GARY M. ONADY MD, PHD
NPI 1396792347
Internal Medicine in Trenton, OH

Active since May 27, 2006PECOS EnrolledAccepts Medicare Assignment
715 W STATE ST, TRENTON, OH 45067(513) 988-6067(513) 988-6070 Get Directions Write a Review

NPPES record last updated: September 15, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 15, 2025, Nov 6, 2024, Feb 10, 2022 (3 updates tracked since 2022).

About Gary M. Onady Md, Phd NPPES

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

GARY M. ONADY MD, PHD (NPI 1396792347) is an individual internal medicine provider in Trenton, Ohio, licensed in Ohio (35.057057) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Cincinnati Medical Center, Llc, and is a graduate of Wright State University Boonshoft School Of Medicine (1987).

NPPES Registry Identity

NPI1396792347
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGARY M. ONADYCredential: MD, PHD
Location Address715 W STATE STTrenton, OH 45067-9220
Mailing Address3200 Burnet AveCincinnati, OH 45229-3019
Phone(513) 988-6067
Fax(513) 988-6070
Sole ProprietorNo
Medical School CMSWright State University Boonshoft School Of MedicineGraduated 1987
Enumeration DateMay 27, 2006
Last NPPES UpdateSeptember 15, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2025
✔ NPI 1396792347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OH · 35.057057
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedPediatricsTaxonomy 208000000X · License 35.057057 (OH)
715 W STATE ST, Trenton, OH 45067
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Other Identifiers 1

Medicaid0828519OH

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource, Molina Healthcare, Oscar Health Insurance and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gary M. Onady Md, Phd 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 ID1951300227
PECOS Enrollment IDI20061214000187
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
108 services76 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
92 services65 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
75 services75 patients
Hemoglobin a1c level 83036
Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
56 services36 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
48 services40 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
31 services31 patients

Hospital Affiliations CMS Care Compare 3

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

University Of Cincinnati Medical Center, LLC

Acute Care Hospitals · Cincinnati, OH
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360003
Location3188 Bellevue AvenueCincinnati, OH 45219 · Hamilton County
Emergency services Birthing friendly

Kettering Health Dayton

Acute Care Hospitals · Dayton, OH
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number360133
Location405 Grand AvenueDayton, OH 45405 · Montgomery County
Birthing friendly

West Chester Hospital

Acute Care Hospitals · West Chester, OH
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number360354
Location7700 University DriveWest Chester, OH 45069 · Butler County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 45067 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.12 typical visit price
range $54.34 – $166.65
Typical copayment $31.53 (range $13.58 – $41.66)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.10 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
3 suppliers14 claims14 services$180.94 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 3

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

KELLI JEAN MELVIN MD
Family Medicine
715 W STATE ST
TRENTON, OH 45067
Butler County (513) 988-6067
KRISTA MARIE YOUNG CNP
Nurse Practitioner (Primary Care)
715 W STATE ST
TRENTON, OH 45067
Butler County (513) 988-6067
KATHERINE ELIZABETH TANIS MSN, APRN, FNP-C
Nurse Practitioner
715 W STATE ST
TRENTON, OH 45067
Butler County (513) 988-6067

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 Gary Onady's NPI number?

The NPI number for Gary Onady is 1396792347. It was assigned to this individual provider in the NPPES registry on May 27, 2006.

Where is Gary Onady located?

Gary Onady practices at 715 W State St, Trenton, OH 45067. The listed phone number is (513) 988-6067.

What is Gary Onady's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gary Onady enrolled in Medicare?

Yes. Gary Onady 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.

What insurance does Gary Onady accept?

Health plans from CareSource, Molina Healthcare, Oscar Health Insurance and UnitedHealthcare list Gary Onady 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 Gary Onady affiliated with any hospitals?

According to CMS data, Gary Onady is affiliated with University Of Cincinnati Medical Center, LLC, Kettering Health Dayton and West Chester Hospital.

When was this NPI record last updated?

The NPPES record for Gary Onady was last updated on September 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.