Physician Profile

Unclaimed Profile

About BAY

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Areas of Expertise

Internal Medicine (Primary)

Common questions

What kind of doctor is Dr. Bay?

Dr. Bay is an internist in Madison, WI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “Internal Medicine”.

NPI registry

What is Dr. Bay's address?

Dr. Bay is listed at 600 HIGHLAND AVE, Madison, WI 53792. 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. Bay?

The number on file is (608) 263-6400. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is the NPI for Dr. Bay?

Dr. Bay's National Provider Identifier is 1508706821. 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

Is Dr. Bay's profile verified?

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

Guide.md

Licensing & Certification

WI license1022284-851
NPI1508706821
NPI issued03/30/2026

Source: NPPES NPI Registry

Related providers

Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.

Other internists at this location 3

Same specialty, same street address — most likely the same department or group.

Related specialists at this location 8

Clinically related specialties at the same address — the people this provider most likely works alongside.

Also at this address 4

Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.

More connections — 5 related providers in 1 group

Other internists in Madison 5

Same specialty, same city.

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