Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

ELIZABETH LEON
NPI 1114846409
Registered Nurse - Critical Care Medicine in Livermore, CA

Active since July 13, 2026
1002 PEPPERTREE PL, LIVERMORE, CA 94550(408) 568-4943 Get Directions

NPPES record added: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Female
  • Registered Nurse
  • Critical Care Medicine

About ELIZABETH LEON

This page provides the complete NPI Profile along with additional information for Elizabeth Leon, a provider established in Livermore, California with a medical specialization in Registered Nurse, focusing in critical care medicine . The healthcare provider is registered in the NPI registry with number 1114846409 assigned on July 2026. The practitioner's primary taxonomy code is 163WC0200X with license number 733550 (CA). The provider is registered as an individual and her NPI record was last updated July 2026. Elizabeth Leon operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization.

NPI
1114846409
Provider Name
ELIZABETH LEON
Gender
Female
Entity Type
Individual
Location Address
1002 PEPPERTREE PL LIVERMORE, CA 94550
Location Phone
(408) 568-4943
Mailing Address
1002 PEPPERTREE PL LIVERMORE, CA 94550
Mailing Phone
(408) 568-4943
Is Sole Proprietor?
Yes
Enumeration Date
07-13-2026
Last Update Date
07-13-2026
Code Navigator

A registered nurse (RN) like Elizabeth Leon coordinates and provides patient care and educates patients about various health conditions. Registered nurses give advice and emotional support to patients and their families. The typical duties of a registered nurse include: assessing patient conditions, record medical histories and symptoms, observe patients and record the observations, administer medicines and treatments, consult and collaborate with doctors, operate and monitor medical equipment, teach patients and families how to manage injuries or illnesses, etc.

Registered nurses typically work as part of a team with physicians and other healthcare professionals. In some medical teams registered nurses supervise nursing assistants, licensed practical nurses, and home health aides.

Critical care nurses - this registered nurse specializes in providing care at hospital intensive-care units, tending to patients with severe, acute illnesses and injuries that require meticulous monitoring and intervention.

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

Registered Nurse Critical Care Medicine

Taxonomy Code
163WC0200X
Type
Nursing Service Providers
License No.
733550
License State
CA

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
License No. (State)
1163WS0121XNursing Service Providers

Registered Nurse
Plastic Surgery

733550 (CA)

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

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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 1114846409, 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
1
Unchanged
Pos 3
1
Doubled → 2
Pos 4
4
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
4
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
4
Unchanged
Pos 9
0
Doubled → 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 1 → 2 8 → 16 → 7 6 → 12 → 3 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 2 + 4 + 1 + 6 + 4 + 1 + 2 + 4 + 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 1114846409.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1114846409, enumerated as an "individual" on July 13, 2026.

The provider is located at 1002 PEPPERTREE PL LIVERMORE, CA 94550 and the phone number is (408) 568-4943.

Registered Nurse with taxonomy code 163WC0200X and a focus in Critical Care Medicine.