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About

Hearing Science of Daly City is a small medical practice in Daly City, CA that provides hearing aid solutions. The company operates from two Daly City offices (both at 333 Gellert Blvd) and appears to be a solo-to-small team operation with ties to reputable local training programs. Key details: industry: medical practices; headquarters: Daly City, CA; homepage listed as hearingscience.biz; aliases include “hearing science of daly city.” Notable contacts include a LinkedIn presence.

Clinic Type

Audiology

Address

333 Gellert Blvd #118, Daly City, CA 94015

Phone

+1-650-994-3410

Email

hsdc333@sbcglobal.net

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • Comprehensive Hearing Evaluations
  • Hearing Aid Repairs
  • Free Consultations
  • Musician’s Earplugs
  • Sleep Plugs and Swim Molds
  • Assistive Listening and Alerting Devices

Team

  • Marcia Raggio, Ph.D., FAAA — Owner, Audiologist

Insurance & Payment

—

Languages Spoken

—

Current Offers

Free Consultations

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Better Business Bureau (BBB): A+ (BBB Rating)
  • Healthy Hearing: 5 out of 5 stars (based on 4 reviews) (4)
  • Promallu (Aggregated): 5 out of 5 stars (based on aggregated data) (5)

Patients praise

  • Professional and thorough care provided by audiologists
  • Helpful staff members who care about patient needs
  • Good quality hearing aid products and satisfactory outcomes for many patients

Common complaints

  • Difficulty scheduling appointments and long wait times
  • Reports of rude or unprofessional staff behavior towards patients and toddlers
  • Concerns regarding accuracy of clinical reporting and handling of equipment

"She's very professional. She knows what she's doing."

— Healthy Hearing reviewer

"I will admit that trying to schedule something is very hard. They are always booked up to a month or two ahead."

— Unilocal reviewer

"Either this office is always running extremely behind or they don’t know how to schedule their appointments."

— Unilocal reviewer

Synthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 10, 2026.

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