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Physician Profile

Aaron L. Haag, DO

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Where to find Aaron L. Haag, DO

About Dr. Haag

Aaron L. Haag, DO practices internal medicine in Hershey, PA. The provider's National Provider Identifier (NPI) is 1669934600.

Factual summary compiled by Guide.md from public records; not written by this provider.

Specialty

Internal Medicine (Primary)

Credentials & Licensing

PA licenceAs reported to the NPI registry
No. OS022136As reported
NPINational Provider Identifier
1669934600Issued 2019

As reported to the NPI registry ↗

Medicare information

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. Haag?

Dr. Haag is an internist in Hershey, PA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.

NPI registry

What is Dr. Haag's address?

Dr. Haag is listed at 500 University Dr, Hershey, PA 17033. 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. Haag?

The number on file is (800) 243-1455. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Dr. Haag's NPI number?

Dr. Haag's National Provider Identifier is 1669934600. 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

How long has Dr. Haag been practicing?

Dr. Haag has 7+ years experience. Registered with an NPI since 2019. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Has Dr. Haag confirmed this information?

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

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