HEARING RESOURCE CENTER OF SAN MATEO, INC.
NPI 1578771325
Audiologist in San Mateo, CA

NPI Status: Active since May 17, 2007

Contact Information

100 S ELLSWORTH AVE
SUITE 303
SAN MATEO, CA
ZIP 94401
Phone: (650) 579-4470
Fax: (650) 579-4471

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  • Organization
  • Audiologist

About HEARING RESOURCE CENTER OF SAN MATEO, INC.

This page provides the complete NPI Profile along with additional information for Hearing Resource Center Of San Mateo, Inc., a provider established in San Mateo, California operating as a Audiologist. The healthcare provider is registered in the NPI registry with number 1578771325 assigned on May 2007. The practitioner's primary taxonomy code is 231H00000X with license number AU2409 (CA). The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Donald E Morgan Ph.d. (President)

NPI
1578771325
Provider Name
HEARING RESOURCE CENTER OF SAN MATEO, INC.
Entity Type
Organization
Location Address
100 S ELLSWORTH AVE SUITE 303 SAN MATEO, CA 94401
Location Phone
(650) 579-4470
Location Fax
(650) 579-4471
Mailing Address
100 S ELLSWORTH AVE SUITE 303 SAN MATEO, CA 94401
Mailing Phone
(650) 579-4470
Mailing Fax
(650) 579-4471
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-17-2007
Last Update Date
09-11-2025
Code Navigator

Audiologists like Hearing Resource Center Of San Mateo, Inc. are experts in diagnosing issues related to various parts of the ear, including the outer, middle, and inner ear. They can identify conditions like vertigo, balance issues, hearing loss, and tinnitus, offering treatments based on a patient’s specific condition and severity. These specialists use specialized equipment to assess the cause and extent of hearing impairments, employing tools like audiometers to evaluate the range of frequencies and volumes a person can hear. In addition, audiologists counsel patients and their families, providing advice on managing and adapting to hearing loss.

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Audiologist

Taxonomy Code
231H00000X
Type
Speech, Language and Hearing Service Providers
License No.
AU2409
License State
CA
Taxonomy Description
(1) A specialist in evaluation, habilitation and rehabilitation of those whose communication disorders center in whole or in part in hearing function. Audiologists are autonomous professionals who identify, assess, and manage disorders of the auditory, balance and other neural systems. Audiologists provide audiological (aural) rehabilitation to children and adults across the entire age span. Audiologists select, fit and dispense amplification systems such as hearing aids and related devices. (2) An audiologist is a person qualified by a master's degree in audiology, licensed by the state, where applicable, and practicing within the scope of that license. Audiologists evaluate and treat patients with impaired hearing. They plan, direct and conduct rehabilitative programs with audiotry substitutional devises (hearing aids) and other therapy.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1231H00000XSpeech, Language and Hearing Service Providers

Audiologist

AU2330 (CA)
2231H00000XSpeech, Language and Hearing Service Providers

Audiologist

AU117 (CA)
3231H00000XSpeech, Language and Hearing Service Providers

Audiologist

AU372 (CA)
4237600000XSpeech, Language and Hearing Service Providers

Audiologist-Hearing Aid Fitter

AU2242 (CA)
5237600000XSpeech, Language and Hearing Service Providers

Audiologist-Hearing Aid Fitter

HA7034 (CA)
6237700000XSpeech, Language and Hearing Service Providers

Hearing Instrument Specialist

HA4108 (CA)

Group Taxonomy 193400000X MULTIPLE SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. DONALD E MORGAN PH.D.

Authorized Official Title
PRESIDENT
Authorized Official Phone
(650) 579-4470

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1578771325, we treat the final digit (5) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
8
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
7
Unchanged
Pos 7
1
Doubled → 2
Pos 8
3
Unchanged
Pos 9
2
Doubled → 4
Check
5
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 7 → 14 → 5 7 → 14 → 5 1 → 2 2 → 4

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 5 + 1 + 4 + 8 + 1 + 4 + 7 + 2 + 3 + 4 + 24 = 65

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1578771325.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Dentist (General Practice)
100 S ELLSWORTH AVE, #208
SAN MATEO, CA 94401
Dentist (General Practice)
100 S ELLSWORTH AVE, SUITE 206
SAN MATEO, CA 94401
Audiologist
100 S ELLSWORTH AVE, SUITE 303
SAN MATEO, CA 94401
Psychologist
100 S ELLSWORTH AVE, #802
SAN MATEO, CA 94401
Chiropractor
100 S ELLSWORTH AVE, 504
SAN MATEO, CA 94401
Audiologist
100 S ELLSWORTH AVE, SUITE 303
SAN MATEO, CA 94401
Psychologist (Clinical)
100 S ELLSWORTH AVE, #802
SAN MATEO, CA 94401
Dentist
100 S ELLSWORTH AVE, SUITE 601
SAN MATEO, CA 94401
Psychiatry & Neurology (Psychiatry)
100 S ELLSWORTH AVE, STE.611
SAN MATEO, CA 94401
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
100 S ELLSWORTH AVE, SUITE 504
SAN MATEO, CA 94401
Audiologist
100 S ELLSWORTH AVE, 303
SAN MATEO, CA 94401
Dentist (General Practice)
100 S ELLSWORTH AVE, SUITE 309
SAN MATEO, CA 94401
Otolaryngology
100 S ELLSWORTH AVE, SUITE 301
SAN MATEO, CA 94401
Health Maintenance Organization
100 S ELLSWORTH AVE, # 802
SAN MATEO, CA 94401
Dentist (General Practice)
100 S ELLSWORTH AVE, SUITE 509
SAN MATEO, CA 94401
Orthotist
100 S ELLSWORTH AVE, SUITE 203
SAN MATEO, CA 94401
Student in an Organized Health Care Education/Training Program
100 S ELLSWORTH AVE, SUITE 203
SAN MATEO, CA 94401
Otolaryngology (Otolaryngology/Facial Plastic Surgery)
100 S ELLSWORTH AVE, SUITE 308
SAN MATEO, CA 94401
Dentist
100 S ELLSWORTH AVE, SUITE 601
SAN MATEO, CA 94401
Dentist
100 S ELLSWORTH AVE, SUITE 509
SAN MATEO, CA 94401

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1578771325, enumerated as an "organization" on May 17, 2007.

The provider is located at 100 S ELLSWORTH AVE SUITE 303 SAN MATEO, CA 94401 and the phone number is (650) 579-4470.

Audiologist with taxonomy code 231H00000X.