CATHERINE DANISE GEOMELOS
NPI 1053280669
Speech-Language Pathologist in Lexington, MA

NPI Status: Active since November 03, 2025

Contact Information

19 MUZZEY ST STE L20
LEXINGTON, MA
ZIP 02421
Phone: (978) 237-4937
Fax: (617) 500-9318

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  • Individual
  • Female
  • Speech-Language Pathologist

About CATHERINE GEOMELOS

This page provides the complete NPI Profile along with additional information for Catherine Geomelos, a provider established in Lexington, Massachusetts with a medical specialization in Speech-language Pathologist. The healthcare provider is registered in the NPI registry with number 1053280669 assigned on November 2025. The practitioner's primary taxonomy code is 235Z00000X with license number 1245701937 (MA). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1053280669
Provider Name
CATHERINE DANISE GEOMELOS
Gender
Female
Entity Type
Individual
Location Address
19 MUZZEY ST STE L20 LEXINGTON, MA 02421
Location Phone
(978) 237-4937
Location Fax
(617) 500-9318
Mailing Address
3 JAYNE CIR PEABODY, MA 01960
Mailing Phone
(978) 758-1826
Is Sole Proprietor?
No
Enumeration Date
11-03-2025
Last Update Date
11-03-2025
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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.
1245701937
License State
MA
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 1053280669, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 1 + 0 + 3 + 4 + 8 + 0 + 6 + 1 + 2 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1053280669.

Other Providers at the Same Location


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

Occupational Therapist (Pediatrics)
19 MUZZEY ST STE L20
LEXINGTON, MA 02421
Speech-Language Pathologist
19 MUZZEY ST STE L20
LEXINGTON, MA 02421
Occupational Therapist
19 MUZZEY ST STE L20
LEXINGTON, MA 02421

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1053280669, enumerated as an "individual" on November 03, 2025.

The provider is located at 19 MUZZEY ST STE L20 LEXINGTON, MA 02421 and the phone number is (978) 237-4937.

Speech-Language Pathologist with taxonomy code 235Z00000X.