Physician Profile

Mack Ontiveros, MD

Unclaimed Profile

About Dr. Ontiveros

Based in Mason, OH, Mack Ontiveros, MD is listed in the NPI registry under psychiatry. Mack graduated from University of California, Irvine, California College of Medicine in 2018. According to Medicare claims data, Mack cared for 60 Medicare patients across 151 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, hospital discharge day management, more than 30 minutes, and psychiatric diagnostic evaluation with medical services.

Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.

Specialty

Psychiatry (Primary)

Credentials & Licensing

OH license35.137285
NPI1740784958
NPI issued03/21/2018

License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.

Medicare information

Accepts Medicare assignmentYes
Medicare opt-outNo
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What kind of doctor is Dr. Ontiveros?

Dr. Ontiveros is a psychiatrist in Mason, OH. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.

NPI registry

What is Dr. Ontiveros's address?

Dr. Ontiveros is listed at 4075 Old Western Row Rd, Mason, OH 45040. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Dr. Ontiveros?

The number on file is (513) 536-0232. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is Dr. Ontiveros's NPI number?

Dr. Ontiveros's National Provider Identifier is 1740784958. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Where did Dr. Ontiveros train?

Dr. Ontiveros attended University of California, Irvine, California College of Medicine, graduating in 2018. This comes from the CMS National Downloadable File.

CMS public data

How long has Dr. Ontiveros been practicing?

Dr. Ontiveros has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.

CMS public data

What procedures does Dr. Ontiveros perform?

According to Medicare billing data, Dr. Ontiveros provides treatments such as psychiatric diagnostic evaluation with medical services, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.

Medicare claims

Has Dr. Ontiveros confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ontiveros. If this is you, claiming it is free.

Guide.md

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.