MS. SIERRA D VELASQUEZ NP
NPI 1578801577
Nurse Practitioner - Adult Health in Antioch, CA

NPI Status: Active since January 25, 2013

Contact Information

4721 DALLAS RANCH ROAD
ANTIOCH, CA
ZIP 94531
Phone: (925) 778-0679
Fax: (925) 778-3567

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  • Individual
  • Female
  • Nurse Practitioner
  • Adult Health

About SIERRA VELASQUEZ

This page provides the complete NPI Profile along with additional information for Sierra Velasquez, a provider established in Antioch, California with a medical specialization in Nurse Practitioner, focusing in adult health . The healthcare provider is registered in the NPI registry with number 1578801577 assigned on January 2013. The practitioner's primary taxonomy code is 363LA2200X with license number 22320 (CA). The provider is registered as an individual and her NPI record was last updated 12 years ago.

NPI
1578801577
Provider Name
MS. SIERRA D VELASQUEZ NP
Gender
Female
Entity Type
Individual
Location Address
4721 DALLAS RANCH ROAD ANTIOCH, CA 94531
Location Phone
(925) 778-0679
Location Fax
(925) 778-3567
Mailing Address
4721 DALLAS RANCH ROAD ANTIOCH, CA 94531
Mailing Phone
(925) 778-0679
Mailing Fax
(925) 778-3567
Is Sole Proprietor?
No
Enumeration Date
01-25-2013
Last Update Date
07-22-2014
Code Navigator

A nurse practitioner (NP) like Sierra Velasquez is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, etc.

Location Map

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

Nurse Practitioner Adult Health

Taxonomy Code
363LA2200X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
22320
License State
CA

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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 1578801577, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
5
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
8
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
0
Unchanged
Pos 7
1
Doubled → 2
Pos 8
5
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
7
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 7 → 14 → 5 8 → 16 → 7 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 + 5 + 1 + 4 + 8 + 1 + 6 + 0 + 2 + 5 + 1 + 4 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1578801577.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Internal Medicine (Hematology & Oncology)
4721 DALLAS RANCH ROAD
ANTIOCH, CA 94531
Internal Medicine (Hematology & Oncology)
4721 DALLAS RANCH ROAD
ANTIOCH, CA 94531

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1578801577, enumerated as an "individual" on January 25, 2013.

The provider is located at 4721 DALLAS RANCH ROAD ANTIOCH, CA 94531 and the phone number is (925) 778-0679.

Nurse Practitioner with taxonomy code 363LA2200X and a focus in Adult Health.