ERMA LINDA SIERRA
NPI 1265301659
Nurse Practitioner - Acute Care in Victoria, TX

NPI Status: Active since November 03, 2025

Contact Information

1601 JOHN STOCKBAUER DR APT 3207
VICTORIA, TX
ZIP 77901
Phone: (361) 489-5697

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  • Individual
  • Female
  • Nurse Practitioner
  • Acute Care

About ERMA SIERRA

This page provides the complete NPI Profile along with additional information for Erma Sierra, a provider established in Victoria, Texas with a medical specialization in Nurse Practitioner, focusing in acute care . The healthcare provider is registered in the NPI registry with number 1265301659 assigned on November 2025. The practitioner's primary taxonomy code is 363LA2100X with license number 1216717 (TX). The provider is registered as an individual and her NPI record was last updated January 2026.

NPI
1265301659
Provider Name
ERMA LINDA SIERRA
Gender
Female
Entity Type
Individual
Location Address
1601 JOHN STOCKBAUER DR APT 3207 VICTORIA, TX 77901
Location Phone
(361) 489-5697
Mailing Address
1601 JOHN STOCKBAUER DR APT 3207 VICTORIA, TX 77901
Mailing Phone
(361) 489-5697
Is Sole Proprietor?
Yes
Enumeration Date
11-03-2025
Last Update Date
01-27-2026
Code Navigator

A nurse practitioner (NP) like Erma Sierra 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 Acute Care

Taxonomy Code
363LA2100X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
1216717
License State
TX

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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 1265301659, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
2
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
5
Unchanged
Pos 5
3
Doubled → 6
Pos 6
0
Unchanged
Pos 7
1
Doubled → 2
Pos 8
6
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
9
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 6 → 12 → 3 3 → 6 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 + 2 + 1 + 2 + 5 + 6 + 0 + 2 + 6 + 1 + 0 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1265301659.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1265301659, enumerated as an "individual" on November 03, 2025.

The provider is located at 1601 JOHN STOCKBAUER DR APT 3207 VICTORIA, TX 77901 and the phone number is (361) 489-5697.

Nurse Practitioner with taxonomy code 363LA2100X and a focus in Acute Care.