DR. MARILYN MARKS FREY PHD
NPI 1093853855
Psychologist - Forensic in Paris, IL
NPI Status: Active since February 02, 2007
Contact Information
723 E COURT ST
PARIS, IL
ZIP 61944
Phone: (217) 463-2002
Fax: (217) 463-7202
- Individual
- Female
- Psychologist
- Forensic
About MARILYN MARKS FREY
This page provides the complete NPI Profile along with additional information for Marilyn Marks Frey, a provider established in Paris, Illinois with a medical specialization in Psychologist, focusing in forensic . The healthcare provider is registered in the NPI registry with number 1093853855 assigned on February 2007. The practitioner's primary taxonomy code is 103TF0200X. The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1093853855
- Provider Name
- DR. MARILYN MARKS FREY PHD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 723 E COURT ST PARIS, IL 61944
- Location Phone
- (217) 463-2002
- Location Fax
- (217) 463-7202
- Mailing Address
- 723 E COURT ST PARIS, IL 61944
- Mailing Phone
- (217) 463-2002
- Mailing Fax
- (217) 463-7202
- Is Sole Proprietor?
- No
- Enumeration Date
- 02-02-2007
- Last Update Date
- 09-11-2025
- 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
Psychologist Forensic
- Taxonomy Code
- 103TF0200X
- Type
- Behavioral Health & Social Service Providers
- License State
- IL
- Taxonomy Description
- A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems.
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) |
|---|---|---|---|---|
| 1 | 103G00000X | Behavioral Health & Social Service Providers | Clinical Neuropsychologist | (IL) |
| 2 | 103TC0700X | Behavioral Health & Social Service Providers | Psychologist | (IL) |
Reviews for DR. MARILYN MARKS FREY PHD
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
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 1093853855, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 1 provider is registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1093853855, enumerated as an "individual" on February 02, 2007.
The provider is located at 723 E COURT ST PARIS, IL 61944 and the phone number is (217) 463-2002.
Psychologist with taxonomy code 103TF0200X and a focus in Forensic.
