GRANT HOLLISTER AU.D.
NPI 1437600699
Audiologist in San Francisco, CA

NPI Status: Active since October 21, 2016

Contact Information

4150 CLEMENT ST
SAN FRANCISCO, CA
ZIP 94121
Phone: (415) 221-4810

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  • Individual
  • Male
  • Audiologist

About GRANT HOLLISTER

This page provides the complete NPI Profile along with additional information for Grant Hollister, a provider established in San Francisco, California with a medical specialization in Audiologist. The healthcare provider is registered in the NPI registry with number 1437600699 assigned on October 2016. The practitioner's primary taxonomy code is 231H00000X with license number A.02016 (OH). The provider is registered as an individual and his NPI record was last updated 10 years ago.

NPI
1437600699
Provider Name
GRANT HOLLISTER AU.D.
Gender
Male
Entity Type
Individual
Location Address
4150 CLEMENT ST SAN FRANCISCO, CA 94121
Location Phone
(415) 221-4810
Mailing Address
4150 CLEMENT ST SAN FRANCISCO, CA 94121
Is Sole Proprietor?
No
Enumeration Date
10-21-2016
Last Update Date
10-26-2016
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Audiologists like Grant Hollister 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.

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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.
A.02016
License State
OH
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.

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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 1437600699, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
4
Unchanged
Pos 3
3
Doubled → 6
Pos 4
7
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
0
Unchanged
Pos 7
0
Doubled → 0
Pos 8
6
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
9
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 3 → 6 6 → 12 → 3 0 → 0 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 6 + 7 + 1 + 2 + 0 + 0 + 6 + 1 + 8 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1437600699.

Other Providers at the Same Location


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

Nurse Practitioner (Family)
4150 CLEMENT ST, 111C
SAN FRANCISCO, CA 94121
Internal Medicine (Geriatric Medicine)
4150 CLEMENT ST, VA MEDICAL CENTER 181G
SAN FRANCISCO, CA 94121
Internal Medicine (Gastroenterology)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Dentist (General Practice)
4150 CLEMENT ST, DEPT. 160
SAN FRANCISCO, CA 94121
Internal Medicine (Geriatric Medicine)
4150 CLEMENT ST, 181G
SAN FRANCISCO, CA 94121
Dermatology
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Dermatology
4150 CLEMENT ST, DERMATOLOGY DEPT (190)
SAN FRANCISCO, CA 94121
Nurse Practitioner
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Registered Nurse (Ambulatory Care)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Nurse Practitioner (Adult Health)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Registered Nurse (Ambulatory Care)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Nurse Practitioner (Family)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Hospice, Inpatient
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Internal Medicine (Geriatric Medicine)
4150 CLEMENT ST, SFVAMC BOX 181-G
SAN FRANCISCO, CA 94121
Internal Medicine
4150 CLEMENT ST, BLDG 1, RM306, BOX181G
SAN FRANCISCO, CA 94121
Nurse Practitioner (Adult Health)
4150 CLEMENT ST, WOMEN'S CLINIC 11C2
SAN FRANCISCO, CA 94121
Nurse Practitioner (Psychiatric/Mental Health)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Nurse Practitioner (Adult Health)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Nurse Practitioner (Primary Care)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121
Nurse Practitioner (Gerontology)
4150 CLEMENT ST
SAN FRANCISCO, CA 94121

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1437600699, enumerated as an "individual" on October 21, 2016.

The provider is located at 4150 CLEMENT ST SAN FRANCISCO, CA 94121 and the phone number is (415) 221-4810.

Audiologist with taxonomy code 231H00000X.