BRETT ROBERT HANNA
NPI 1962161778
Dietitian, Registered in San Francisco, CA

NPI Status: Active since December 09, 2021

Contact Information

1600 OWENS ST
SAN FRANCISCO, CA
ZIP 94158
Phone: (330) 858-8885

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  • Individual
  • Male
  • Dietitian, Registered

About BRETT HANNA

This page provides the complete NPI Profile along with additional information for Brett Hanna, a provider established in San Francisco, California with a medical specialization in Dietitian, Registered. The healthcare provider is registered in the NPI registry with number 1962161778 assigned on December 2021. The practitioner's primary taxonomy code is 133V00000X with license number 86056320 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1962161778
Provider Name
BRETT ROBERT HANNA
Gender
Male
Entity Type
Individual
Location Address
1600 OWENS ST SAN FRANCISCO, CA 94158
Location Phone
(330) 858-8885
Mailing Address
1600 OWENS ST SAN FRANCISCO, CA 94158
Mailing Phone
(330) 858-8885
Is Sole Proprietor?
Yes
Enumeration Date
12-09-2021
Last Update Date
07-07-2025
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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

Dietitian, Registered

Taxonomy Code
133V00000X
Type
Dietary & Nutritional Service Providers
License No.
86056320
License State
CA
Taxonomy Description
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.

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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 1962161778, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
9
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
2
Unchanged
Pos 5
1
Doubled → 2
Pos 6
6
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
8
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 6 → 12 → 3 1 → 2 1 → 2 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 2 + 2 + 2 + 6 + 2 + 7 + 1 + 4 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1962161778.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Registered Nurse
1600 OWENS ST
SAN FRANCISCO, CA 94158
Clinic/Center (Primary Care)
1600 OWENS ST, 6TH FLOOR-CHRONIC CONDITIONS
SAN FRANCISCO, CA 94158
Pharmacist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Pharmacist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Pharmacist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Pharmacist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Pharmacist
1600 OWENS ST, MISSION BAY PHARMACY
SAN FRANCISCO, CA 94158
Pharmacist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Social Worker (Clinical)
1600 OWENS ST
SAN FRANCISCO, CA 94158
Physical Therapist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Specialist/Technologist (Athletic Trainer)
1600 OWENS ST
SAN FRANCISCO, CA 94158
Pharmacy
1600 OWENS ST, 1ST FLOOR
SAN FRANCISCO, CA 94158
Pharmacist (Ambulatory Care)
1600 OWENS ST
SAN FRANCISCO, CA 94158
Internal Medicine
1600 OWENS ST
SAN FRANCISCO, CA 94158
Physical Therapist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Student in an Organized Health Care Education/Training Program
1600 OWENS ST
SAN FRANCISCO, CA 94158
Psychologist
1600 OWENS ST
SAN FRANCISCO, CA 94158
Family Medicine
1600 OWENS ST
SAN FRANCISCO, CA 94158
Physical Therapist
1600 OWENS ST
SAN FRANCISCO, CA 94158

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1962161778, enumerated as an "individual" on December 09, 2021.

The provider is located at 1600 OWENS ST SAN FRANCISCO, CA 94158 and the phone number is (330) 858-8885.

Dietitian, Registered with taxonomy code 133V00000X.