LONESTAR PAT ASSOCIATES PA
NPI 1811594203
Hospitalist in Round Rock, TX

NPI Status: Active since October 08, 2020

Contact Information

2400 ROUND ROCK AVE
ROUND ROCK, TX
ZIP 78681
Phone: (512) 341-1000

NPI Profile Information
Primary Taxonomy
Secondary Taxonomies
Group Taxonomy
Authorized Official
CLIA Information
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Organization
Hospitalist
CLIA Number: 45D1060420
CLIA Cert. Type: Federally Qualified Health Center
CLIA Exp. Date: 10-22-2026

About LONESTAR PAT ASSOCIATES PA

This page provides the complete NPI Profile along with additional information for Lonestar Pat Associates Pa, a provider established in Round Rock, Texas operating as a Hospitalist. The healthcare provider is registered in the NPI registry with number 1811594203 assigned on October 2020. The practitioner's primary taxonomy code is 208M00000X. The provider is registered as an organization and their NPI record was last updated 6 years ago. Lonestar Pat Associates Pa operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Dr. Lance Dean Williams Md (President)

NPI: 1811594203
Provider Name: LONESTAR PAT ASSOCIATES PA
Entity Type: Organization
Location Address: 2400 ROUND ROCK AVE ROUND ROCK, TX 78681
Location Phone: (512) 341-1000
Mailing Address: 1643 NW 136TH AVE STE 100 SUNRISE, FL 33323
Mailing Phone: (800) 424-3672
Mailing Fax
Is Sole Proprietor?: No
Is Organization Subpart?: No
Enumeration Date: 10-08-2020
Last Update Date: 10-08-2020
Code Navigator

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: Hospitalist
Taxonomy Code: 208M00000X
Type: Allopathic & Osteopathic Physicians
Taxonomy Description: Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

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
1	207Q00000X	Allopathic & Osteopathic Physicians	Family Medicine
2	207R00000X	Allopathic & Osteopathic Physicians	Internal Medicine
3	363A00000X	Physician Assistants & Advanced Practice Nursing Providers	Physician Assistant
4	363L00000X	Physician Assistants & Advanced Practice Nursing Providers	Nurse Practitioner

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.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name: DR. LANCE DEAN WILLIAMS MD
Authorized Official Title: PRESIDENT
Authorized Official Phone: (800) 424-3672

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number: 45D1060420
Facility Type: Federally Qualified Health Center
Certificate Effective Date: October 23, 2024
Certificate Expiration Date: October 22, 2026
Laboratory Director: DAVID T. BILLUE
Certificate Type: Certificate for Provider-Performed Microscopy Procedures (PPMP)
Certificate Type Description: This CLIA certificate is issued to Lonestar Pat Associates Pa in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing.

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 1811594203, 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 2

Pos 4

Unchanged

Pos 5

Doubled → 10 → 1 + 0

Pos 6

Unchanged

Pos 7

Doubled → 8

Pos 8

Unchanged

Pos 9

Doubled → 0

Check

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 5 → 10 → 1 4 → 8 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 2 + 1 + 1 + 0 + 9 + 8 + 2 + 0 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3

This NPI is valid

The calculated check digit is 3, which matches the last digit of 1811594203.