WESTTOWN VALLEY MEDICAL ASSOCIATES, PC
NPI 1811935562
Internal Medicine in West Chester, PA

NPI Status: Active since June 03, 2006

Contact Information

1646 W CHESTER PIKE
SUITE 12
WEST CHESTER, PA
ZIP 19382
Phone: (610) 738-9002
Fax: (619) 738-9101

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  • Organization
  • Internal Medicine
  • CLIA Number: 39D2042746
  • CLIA Cert. Type: End Stage Renal Disease Dialysis Facility
  • CLIA Exp. Date: 06-18-2026

About WESTTOWN VALLEY MEDICAL ASSOCIATES, PC

This page provides the complete NPI Profile along with additional information for Westtown Valley Medical Associates, Pc, an internist established in West Chester, Pennsylvania operating as a Internal Medicine. The healthcare provider is registered in the NPI registry with number 1811935562 assigned on June 2006. The practitioner's primary taxonomy code is 207R00000X. The provider is registered as an organization and their NPI record was last updated 16 years ago. Westtown Valley Medical Associates, Pc 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. Joseph Edward Trojak M.d. (President And Owner)

NPI
1811935562
Provider Name
WESTTOWN VALLEY MEDICAL ASSOCIATES, PC
Entity Type
Organization
Location Address
1646 W CHESTER PIKE SUITE 12 WEST CHESTER, PA 19382
Location Phone
(610) 738-9002
Location Fax
(619) 738-9101
Mailing Address
1646 W CHESTER PIKE SUITE 12 WEST CHESTER, PA 19382
Mailing Phone
(610) 738-9002
Mailing Fax
(619) 738-9101
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
06-03-2006
Last Update Date
07-06-2010
Code Navigator

An internist like Westtown Valley Medical Associates, Pc is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, 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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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)
1207Q00000XAllopathic & Osteopathic Physicians

Family Medicine

 

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. JOSEPH EDWARD TROJAK M.D.

Authorized Official Title
PRESIDENT AND OWNER
Authorized Official Phone
(610) 738-9002

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
39D2042746
Facility Type
End Stage Renal Disease Dialysis Facility
Certificate Effective Date
June 19, 2024
Certificate Expiration Date
June 18, 2026
Laboratory Director
DR. AMBEREEN M. JAN MD
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Westtown Valley Medical Associates, Pc to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1811935562, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
1
Doubled → 2
Pos 4
1
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
5
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
2
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 9 → 18 → 9 5 → 10 → 1 6 → 12 → 3

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 + 8 + 3 + 1 + 0 + 5 + 1 + 2 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1811935562.

Other Providers at the Same Location


The following 9 providers are registered at the same or a nearby location.

Internal Medicine
1646 W CHESTER PIKE, SUITE 21
WEST CHESTER, PA 19382
Internal Medicine
1646 W CHESTER PIKE, SUITE 21
WEST CHESTER, PA 19382
Family Medicine
1646 W CHESTER PIKE, SUITE 12
WEST CHESTER, PA 19382
Dentist (General Practice)
1646 W CHESTER PIKE, SUITE 1
WEST CHESTER, PA 19382
Nurse Practitioner (Family)
1646 W CHESTER PIKE, SUITE 21
WEST CHESTER, PA 19382
Nurse Practitioner (Adult Health)
1646 W CHESTER PIKE, SUITE 21
WEST CHESTER, PA 19382
Chiropractor
1646 W CHESTER PIKE, SUITE 3
WEST CHESTER, PA 19382
Chiropractor
1646 W CHESTER PIKE, SUITE 3
WEST CHESTER, PA 19382
Internal Medicine
1646 W CHESTER PIKE, SUITE 21
WEST CHESTER, PA 19382

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1811935562, enumerated as an "organization" on June 03, 2006.

The provider is located at 1646 W CHESTER PIKE SUITE 12 WEST CHESTER, PA 19382 and the phone number is (610) 738-9002.

Internal Medicine with taxonomy code 207R00000X.