Karin Duff

Individual providerUnclaimed listingVallejo, CA

About this listing

Karin Duff is a hearing aid specialist in Vallejo, California. The federal NPI registry lists 1 licensed hearing instrument specialist at this practice address. It was first registered in 2026.

From the NPI registry, last updated 2026. Not yet confirmed by the practice.

Services

Based on the provider types registered at this address.

Hearing aid fitting and sales
A licensed hearing instrument specialist is registered here to test for, fit and sell hearing aids.
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Clinicians at this address

As listed in the NPI registry. Staff can change; confirm when you book.

Karin DuffHearing instrument specialist

Before you call

Ask if they're taking new patients and which insurance or Medicare Advantage plans they accept.
Ask whether you'll see an audiologist or a hearing instrument specialist.
If you're buying hearing aids, ask about the trial period, return fee and what follow-up visits are included.
Sudden hearing loss in one ear needs same-day care. Don't wait for a routine appointment.

Questions about Karin Duff

Where is Karin Duff?

Karin Duff is listed at 480 Redwood St Ste 14, Vallejo, CA 94590.

How do I contact Karin Duff?

The phone number on file in the NPI registry is (707) 642-8862. Call ahead to confirm hours and whether they're taking new patients.

Does Karin Duff have an audiologist?

The NPI registry lists 1 licensed hearing instrument specialist here, and no audiologist at this address. Hearing instrument specialists are licensed to test for and fit hearing aids; audiologists also handle full diagnostic testing.

Does Karin Duff take Medicare?

This listing hasn't been confirmed by the practice, so call to check. Original Medicare covers diagnostic hearing exams in some cases but not hearing aids; many Medicare Advantage plans add a hearing aid benefit through a provider network.

Other hearing care nearby

All hearing care in Vallejo