MARISSA GELB CCC-SLP
NPI 1992591226
Speech-Language Pathologist in New York, NY

NPI Status: Active since April 15, 2025

Contact Information

635 MADISON AVE FL 19
NEW YORK, NY
ZIP 10022
Phone: (914) 275-3675

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  • Individual
  • Female
  • Speech-Language Pathologist

About MARISSA GELB

This page provides the complete NPI Profile along with additional information for Marissa Gelb, a provider established in New York, New York with a medical specialization in Speech-language Pathologist. The healthcare provider is registered in the NPI registry with number 1992591226 assigned on April 2025. The practitioner's primary taxonomy code is 235Z00000X with license number 034242-01 (NY). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1992591226
Provider Name
MARISSA GELB CCC-SLP
Gender
Female
Entity Type
Individual
Location Address
635 MADISON AVE FL 19 NEW YORK, NY 10022
Location Phone
(914) 275-3675
Mailing Address
635 MADISON AVE FL 19 NEW YORK, NY 10022
Mailing Phone
(914) 275-3675
Is Sole Proprietor?
No
Enumeration Date
04-15-2025
Last Update Date
04-15-2025
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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

Speech-Language Pathologist

Taxonomy Code
235Z00000X
Type
Speech, Language and Hearing Service Providers
License No.
034242-01
License State
NY
Taxonomy Description
The speech-language pathologist is the professional who engages in clinical services, prevention, advocacy, education, administration, and research in the areas of communication and swallowing across the life span from infancy through geriatrics. Speech-language pathologists address typical and atypical impairments and disorders related to communication and swallowing in the areas of speech sound production, resonance, voice, fluency, language (comprehension and expression), cognition, and feeding and swallowing.

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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 1992591226, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 8 + 2 + 1 + 0 + 9 + 2 + 2 + 4 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1992591226.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Physical Therapist (Orthopedic)
635 MADISON AVE FL 19
NEW YORK, NY 10022
Chiropractor
635 MADISON AVE FL 19
NEW YORK, NY 10022
Chiropractor
635 MADISON AVE FL 19
NEW YORK, NY 10022

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1992591226, enumerated as an "individual" on April 15, 2025.

The provider is located at 635 MADISON AVE FL 19 NEW YORK, NY 10022 and the phone number is (914) 275-3675.

Speech-Language Pathologist with taxonomy code 235Z00000X.