MR. CHRYSTIAN HUMBERTO GUARDADO-LOPEZ MT
NPI 1457233793
Massage Therapist in Oakland, CA

NPI Status: Active since July 25, 2025

Contact Information

4126 TELEGRAPH AVE
OAKLAND, CA
ZIP 94609
Phone: (510) 358-3318

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  • Individual
  • Male
  • Massage Therapist

About CHRYSTIAN GUARDADO-LOPEZ

This page provides the complete NPI Profile along with additional information for Chrystian Guardado-lopez, a provider established in Oakland, California with a medical specialization in Massage Therapist. The healthcare provider is registered in the NPI registry with number 1457233793 assigned on July 2025. The practitioner's primary taxonomy code is 225700000X with license number 96924 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1457233793
Provider Name
MR. CHRYSTIAN HUMBERTO GUARDADO-LOPEZ MT
Gender
Male
Entity Type
Individual
Location Address
4126 TELEGRAPH AVE OAKLAND, CA 94609
Location Phone
(510) 358-3318
Mailing Address
4126 TELEGRAPH AVE OAKLAND, CA 94590
Mailing Phone
(510) 358-3318
Is Sole Proprietor?
Yes
Enumeration Date
07-25-2025
Last Update Date
07-25-2025
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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

Massage Therapist

Taxonomy Code
225700000X
Type
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.
96924
License State
CA
Taxonomy Description
An individual trained in the manipulation of tissues (as by rubbing, stroking, kneading, or tapping) with the hand or an instrument for remedial or hygienic purposes.

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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 1457233793, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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
5
Doubled → 10 → 1 + 0
Pos 4
7
Unchanged
Pos 5
2
Doubled → 4
Pos 6
3
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
3
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 2 → 4 3 → 6 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 + 1 + 0 + 7 + 4 + 3 + 6 + 7 + 1 + 8 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1457233793.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Naturopath
4126 TELEGRAPH AVE
OAKLAND, CA 94609
Psychologist (Clinical)
4126 TELEGRAPH AVE
OAKLAND, CA 94609
Marriage & Family Therapist
4126 TELEGRAPH AVE
OAKLAND, CA 94609

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1457233793, enumerated as an "individual" on July 25, 2025.

The provider is located at 4126 TELEGRAPH AVE OAKLAND, CA 94609 and the phone number is (510) 358-3318.

Massage Therapist with taxonomy code 225700000X.