SONYA VASSOS PH.D.
NPI 1245447010
Counselor - Mental Health in New York, NY

NPI Status: Active since May 17, 2007

Contact Information

412 AVENUE OF THE AMERICAS
SUITE 705
NEW YORK, NY
ZIP 10011
Phone: (212) 995-9592
Fax: (212) 995-9592

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  • Individual
  • Female
  • Counselor
  • Mental Health

About SONYA VASSOS

This page provides the complete NPI Profile along with additional information for Sonya Vassos, a provider established in New York, New York with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1245447010 assigned on May 2007. The practitioner's primary taxonomy code is 101YM0800X with license number 002437 (NY). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI
1245447010
Provider Name
SONYA VASSOS PH.D.
Gender
Female
Entity Type
Individual
Location Address
412 AVENUE OF THE AMERICAS SUITE 705 NEW YORK, NY 10011
Location Phone
(212) 995-9592
Location Fax
(212) 995-9592
Mailing Address
2 5TH AVE PH N NEW YORK, NY 10011
Mailing Phone
(212) 995-9592
Mailing Fax
(212) 995-9592
Is Sole Proprietor?
Yes
Enumeration Date
05-17-2007
Last Update Date
05-03-2026
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A mental health counselor like Sonya Vassos provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
002437
License State
NY

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)
1102L00000XBehavioral Health & Social Service Providers

Psychoanalyst

098-0000197 (VT)

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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 1245447010, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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
2
Unchanged
Pos 3
4
Doubled → 8
Pos 4
5
Unchanged
Pos 5
4
Doubled → 8
Pos 6
4
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
0
Unchanged
Pos 9
1
Doubled → 2
Check
0
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 4 → 8 4 → 8 7 → 14 → 5 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 8 + 5 + 8 + 4 + 1 + 4 + 0 + 2 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1245447010.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, #711
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, #706
NEW YORK, NY 10011
Psychologist (Psychoanalysis)
412 AVENUE OF THE AMERICAS, SUITE 707
NEW YORK, NY 10011
Dietitian, Registered
412 AVENUE OF THE AMERICAS, #511
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 400
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 704
NEW YORK, NY 10011
Psychoanalyst
412 AVENUE OF THE AMERICAS, SUITE 611
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 508
NEW YORK, NY 10011
Psychologist
412 AVENUE OF THE AMERICAS, STE 609
NEW YORK, NY 10011
Psychologist (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 708
NEW YORK, NY 10011
Psychologist (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 413
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 709
NEW YORK, NY 10011
Occupational Therapist
412 AVENUE OF THE AMERICAS, SUITE 408-409
NEW YORK, NY 10011
Speech-Language Pathologist
412 AVENUE OF THE AMERICAS, STE. 408-409
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 601
NEW YORK, NY 10011
Social Worker
412 AVENUE OF THE AMERICAS, STE 510
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS
NEW YORK, NY 10011
Counselor (Mental Health)
412 AVENUE OF THE AMERICAS, SUITE 509
NEW YORK, NY 10011
Social Worker (Clinical)
412 AVENUE OF THE AMERICAS, SUITE 505
NEW YORK, NY 10011
Speech-Language Pathologist
412 AVENUE OF THE AMERICAS, SUITE 503
NEW YORK, NY 10011

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1245447010, enumerated as an "individual" on May 17, 2007.

The provider is located at 412 AVENUE OF THE AMERICAS SUITE 705 NEW YORK, NY 10011 and the phone number is (212) 995-9592.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.