DR. LILLY SIMON PSYD
NPI 1821949157
Psychologist - Cognitive & Behavioral in New York, NY

NPI Status: Active since February 04, 2026

Contact Information

6 E 39TH ST STE 1100
NEW YORK, NY
ZIP 10016
Phone: (646) 944-8108
Fax: (646) 944-8108

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Psychologist
Cognitive & Behavioral

About LILLY SIMON

This page provides the complete NPI Profile along with additional information for Lilly Simon, a provider established in New York, New York with a medical specialization in Psychologist, focusing in cognitive & behavioral . The healthcare provider is registered in the NPI registry with number 1821949157 assigned on February 2026. The practitioner's primary taxonomy code is 103TB0200X. The provider is registered as an individual and her NPI record was last updated February 2026.

NPI: 1821949157
Provider Name: DR. LILLY SIMON PSYD
Gender: Female
Entity Type: Individual
Location Address: 6 E 39TH ST STE 1100 NEW YORK, NY 10016
Location Phone: (646) 944-8108
Location Fax: (646) 944-8108
Mailing Address: 6 E 39TH ST STE 1100 NEW YORK, NY 10016
Mailing Phone: (646) 944-8108
Mailing Fax: (646) 944-8108
Is Sole Proprietor?: No
Enumeration Date: 02-04-2026
Last Update Date: 02-04-2026
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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 Cognitive & Behavioral
Taxonomy Code: 103TB0200X
Type: Behavioral Health & Social Service Providers
License State: NY
Taxonomy Description: A psychologist who reflects an experimental-clinical approach distinguished by use of principles of human learning and development and theories of cognitive processing to promote meaningful change in maladaptive human behavior and thinking.

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 1821949157, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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 → 4

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 18 → 1 + 8

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 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 2 → 4 9 → 18 → 9 9 → 18 → 9 5 → 10 → 1

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 + 8 + 4 + 1 + 8 + 1 + 1 + 0 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1821949157.