MRS. CRISTI MARIE TABILAS CHAN FNP-C
NPI 1821881673
Nurse Practitioner - Family in Richmond, TX

NPI Status: Active since May 26, 2025

Contact Information

5822 LIMESTONE RIDGE LN
RICHMOND, TX
ZIP 77469
Phone: (434) 203-8965

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  • Individual
  • Female
  • Nurse Practitioner
  • Family

About CRISTI MARIE CHAN

This page provides the complete NPI Profile along with additional information for Cristi Marie Chan, a provider established in Richmond, Texas with a medical specialization in Nurse Practitioner, focusing in family . The healthcare provider is registered in the NPI registry with number 1821881673 assigned on May 2025. The practitioner's primary taxonomy code is 363LF0000X with license number 1028325 (TX). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1821881673
Provider Name
MRS. CRISTI MARIE TABILAS CHAN FNP-C
Gender
Female
Entity Type
Individual
Location Address
5822 LIMESTONE RIDGE LN RICHMOND, TX 77469
Location Phone
(434) 203-8965
Mailing Address
5822 LIMESTONE RIDGE LN RICHMOND, TX 77469
Mailing Phone
(434) 203-8965
Is Sole Proprietor?
Yes
Enumeration Date
05-26-2025
Last Update Date
05-26-2025
Code Navigator

A nurse practitioner (NP) like Cristi Marie Chan 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 Family

Taxonomy Code
363LF0000X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
1028325
License State
TX

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)
1363L00000XPhysician Assistants & Advanced Practice Nursing Providers

Nurse Practitioner

1028325 (TX)
2363LP2300XPhysician Assistants & Advanced Practice Nursing Providers

Nurse Practitioner
Primary Care

1028325 (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 1821881673, 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
8
Unchanged
Pos 3
2
Doubled → 4
Pos 4
1
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
8
Unchanged
Pos 7
1
Doubled → 2
Pos 8
6
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
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 2 → 4 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 + 8 + 4 + 1 + 1 + 6 + 8 + 2 + 6 + 1 + 4 + 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 1821881673.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821881673, enumerated as an "individual" on May 26, 2025.

The provider is located at 5822 LIMESTONE RIDGE LN RICHMOND, TX 77469 and the phone number is (434) 203-8965.

Nurse Practitioner with taxonomy code 363LF0000X and a focus in Family.