SERENA TONSTAD
NPI 1023258290
Preventive Medicine - Public Health & General Preventive Medicine in Loma Linda, CA

NPI Status: Active since March 02, 2009

Contact Information

24785 STEWART ST
EVANS HALL, ROOM 111
LOMA LINDA, CA
ZIP 92350
Phone: (909) 558-4741
Fax: (909) 558-0471

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  • Individual
  • Female
  • Preventive Medicine
  • Public Health & General Preventive Medic...

About SERENA TONSTAD

This page provides the complete NPI Profile along with additional information for Serena Tonstad, a provider established in Loma Linda, California with a medical specialization in Preventive Medicine, focusing in public health & general preventive medicine . The healthcare provider is registered in the NPI registry with number 1023258290 assigned on March 2009. The practitioner's primary taxonomy code is 2083P0901X with license number G63600 (CA). The provider is registered as an individual and her NPI record was last updated 17 years ago.

NPI
1023258290
Provider Name
SERENA TONSTAD
Gender
Female
Entity Type
Individual
Location Address
24785 STEWART ST EVANS HALL, ROOM 111 LOMA LINDA, CA 92350
Location Phone
(909) 558-4741
Location Fax
(909) 558-0471
Mailing Address
24785 STEWART ST EVANS HALL, ROOM 111 LOMA LINDA, CA 92350
Mailing Phone
(909) 558-4741
Mailing Fax
(909) 558-0471
Is Sole Proprietor?
No
Enumeration Date
03-02-2009
Last Update Date
03-02-2009
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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

Preventive Medicine Public Health & General Preventive Medicine

Taxonomy Code
2083P0901X
Type
Allopathic & Osteopathic Physicians
License No.
G63600
License State
CA
Taxonomy Description
Public health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with knowledge of primary, secondary, and tertiary prevention-oriented clinical practice in a wide variety of settings.

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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 1023258290, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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
0
Unchanged
Pos 3
2
Doubled → 4
Pos 4
3
Unchanged
Pos 5
2
Doubled → 4
Pos 6
5
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
0
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 2 → 4 2 → 4 8 → 16 → 7 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 4 + 3 + 4 + 5 + 1 + 6 + 2 + 1 + 8 + 24 = 60

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

The next multiple of ten after 60 is 60. The difference is the calculated check digit.

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1023258290.

Other Providers at the Same Location


The following 14 providers are registered at the same or a nearby location.

Nurse Practitioner (Family)
24785 STEWART ST
LOMA LINDA, CA 92350
Preventive Medicine (Public Health & General Preventive Medicine)
24785 STEWART ST, EVANS HALL SUITE 111
LOMA LINDA, CA 92350
Preventive Medicine (Public Health & General Preventive Medicine)
24785 STEWART ST, SUITE 204
LOMA LINDA, CA 92350
Physician Assistant (Medical)
24785 STEWART ST, EVANS HALL ROOM 201
LOMA LINDA, CA 92350
Preventive Medicine (Preventive Medicine/Occupational Environmental Medicine)
24785 STEWART ST, STE 111
LOMA LINDA, CA 92350
Physician Assistant
24785 STEWART ST
LOMA LINDA, CA 92350
Preventive Medicine (Public Health & General Preventive Medicine)
24785 STEWART ST, EVANS HALL, ROOM 101
LOMA LINDA, CA 92350
Physician Assistant
24785 STEWART ST
LOMA LINDA, CA 92350
Physician Assistant
24785 STEWART ST
LOMA LINDA, CA 92350
Student in an Organized Health Care Education/Training Program
24785 STEWART ST
LOMA LINDA, CA 92350
Physician Assistant
24785 STEWART ST
LOMA LINDA, CA 92350
Student in an Organized Health Care Education/Training Program
24785 STEWART ST
LOMA LINDA, CA 92350
Student in an Organized Health Care Education/Training Program
24785 STEWART ST
LOMA LINDA, CA 92350
Student in an Organized Health Care Education/Training Program
24785 STEWART ST
LOMA LINDA, CA 92350

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1023258290, enumerated as an "individual" on March 02, 2009.

The provider is located at 24785 STEWART ST EVANS HALL, ROOM 111 LOMA LINDA, CA 92350 and the phone number is (909) 558-4741.

Preventive Medicine with taxonomy code 2083P0901X and a focus in Public Health & General Preventive Medicine.