MARCO ONTIVEROS
NPI 1609681451
Adult Companion in Grass Valley, CA

NPI Status: Active since February 10, 2025

Contact Information

500 CROWN POINT CIR STE 120
GRASS VALLEY, CA
ZIP 95945
Phone: (530) 265-1437

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

Individual
Male
Adult Companion

About MARCO ONTIVEROS

This page provides the complete NPI Profile along with additional information for Marco Ontiveros, a provider established in Grass Valley, California with a medical specialization in Adult Companion. The healthcare provider is registered in the NPI registry with number 1609681451 assigned on February 2025. The practitioner's primary taxonomy code is 372600000X. The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1609681451
Provider Name: MARCO ONTIVEROS
Gender: Male
Entity Type: Individual
Location Address: 500 CROWN POINT CIR STE 120 GRASS VALLEY, CA 95945
Location Phone: (530) 265-1437
Mailing Address: 500 CROWN POINT CIR STE 120 GRASS VALLEY, CA 95945
Mailing Phone: (530) 265-1437
Is Sole Proprietor?: No
Enumeration Date: 02-10-2025
Last Update Date: 04-01-2025
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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: Adult Companion
Taxonomy Code: 372600000X
Type: Nursing Service Related Providers
Taxonomy Description: An individual who provides supervision, socialization, and non-medical care to a functionally impaired adult. Companions may assist or supervise the individual with such tasks as meal preparation, laundry and shopping, but do not perform these activities as discrete services. These services are provided in accordance with a therapeutic goal in the plan of care.

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 1609681451, 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 → 0

Pos 4

Unchanged

Pos 5

Doubled → 12 → 1 + 2

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

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 0 → 0 6 → 12 → 3 1 → 2 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 0 + 9 + 1 + 2 + 8 + 2 + 4 + 1 + 0 + 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 1609681451.