MARCO CASTRO DURAN M.A., M.S.
NPI 1750761391
Health Educator in Fresno, CA

NPI Status: Active since June 08, 2015

Contact Information

1224 E MICHIGAN AVE
FRESNO, CA
ZIP 93704
Phone: (559) 227-3454

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Secondary Locations
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Health Educator

About MARCO CASTRO DURAN

This page provides the complete NPI Profile along with additional information for Marco Castro Duran, a provider established in Fresno, California with a medical specialization in Health Educator. The healthcare provider is registered in the NPI registry with number 1750761391 assigned on June 2015. The practitioner's primary taxonomy code is 174H00000X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1750761391
Provider Name: MARCO CASTRO DURAN M.A., M.S.
Gender: Male
Entity Type: Individual
Location Address: 1224 E MICHIGAN AVE FRESNO, CA 93704
Location Phone: (559) 227-3454
Mailing Address: PO BOX 3076 PINEDALE, CA 93650
Is Sole Proprietor?: No
Enumeration Date: 06-08-2015
Last Update Date: 06-26-2025
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Location Map

Secondary Locations

230 California Ave Ste 110
Palo Alto, CA 94306
(650) 862-7320
2672 Bayshore Pkwy Ste 1045
Mountain View, CA 94043
(650) 862-7320

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: Health Educator
Taxonomy Code: 174H00000X
Type: Other Service Providers
Taxonomy Description: Health educators work in a variety of settings providing education to individuals or groups of individuals on healthy behaviors, wellness, and health-related topics with the goal of preventing diseases and health problems. Health educators generally require a bachelor's degree and may receive additional training, such as through mentoring, internships, or volunteer work.

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
1	101Y00000X	Behavioral Health & Social Service Providers	Counselor
2	101YM0800X	Behavioral Health & Social Service Providers	Counselor Mental Health
3	171M00000X	Other Service Providers	Case Manager/Care Coordinator

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 1750761391, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 10 → 1 + 0

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 18 → 1 + 8

Check

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 5 → 10 → 1 7 → 14 → 5 1 → 2 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 0 + 0 + 1 + 4 + 6 + 2 + 3 + 1 + 8 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1750761391.