MARILYN NICOLLE CASTRO LMHC-A, M. OF EDU
NPI 1265267140
Counselor in Providence, RI

NPI Status: Active since September 03, 2024

Contact Information

100 HIGHLAND AVE
PROVIDENCE, RI
ZIP 02906
Phone: (401) 383-5051
Fax: (401) 432-7082

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  • Individual
  • Female
  • Counselor

About MARILYN CASTRO

This page provides the complete NPI Profile along with additional information for Marilyn Castro, a provider established in Providence, Rhode Island with a medical specialization in Counselor. The healthcare provider is registered in the NPI registry with number 1265267140 assigned on September 2024. The practitioner's primary taxonomy code is 101Y00000X with license number MHC00461-A (RI). The provider is registered as an individual and her NPI record was last updated April 2026.

NPI
1265267140
Provider Name
MARILYN NICOLLE CASTRO LMHC-A, M. OF EDU
Gender
Female
Entity Type
Individual
Location Address
100 HIGHLAND AVE PROVIDENCE, RI 02906
Location Phone
(401) 383-5051
Location Fax
(401) 432-7082
Mailing Address
134 THURBERS AVE STE 212 PROVIDENCE, RI 02905
Mailing Phone
(401) 383-5051
Is Sole Proprietor?
No
Enumeration Date
09-03-2024
Last Update Date
04-07-2026
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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

Counselor

Taxonomy Code
101Y00000X
Type
Behavioral Health & Social Service Providers
License No.
MHC00461-A
License State
RI
Taxonomy Description
A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

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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 1265267140, 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
6
Doubled → 12 → 1 + 2
Pos 4
5
Unchanged
Pos 5
2
Doubled → 4
Pos 6
6
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
1
Unchanged
Pos 9
4
Doubled → 8
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 6 → 12 → 3 2 → 4 7 → 14 → 5 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 1 + 2 + 5 + 4 + 6 + 1 + 4 + 1 + 8 + 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 1265267140.

Other Providers at the Same Location


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

Ophthalmology
100 HIGHLAND AVE, SUITE 304
PROVIDENCE, RI 02906
Psychiatry & Neurology (Neurology)
100 HIGHLAND AVE, SUITE 303
PROVIDENCE, RI 02906
Psychiatry & Neurology (Neurology)
100 HIGHLAND AVE
PROVIDENCE, RI 02906
Optometrist
100 HIGHLAND AVE, SUITE 304
PROVIDENCE, RI 02906
Internal Medicine (Endocrinology, Diabetes & Metabolism)
100 HIGHLAND AVE
PROVIDENCE, RI 02906
Internal Medicine (Endocrinology, Diabetes & Metabolism)
100 HIGHLAND AVE, 203
PROVIDENCE, RI 02906
Internal Medicine (Endocrinology, Diabetes & Metabolism)
100 HIGHLAND AVE, SUITE 203
PROVIDENCE, RI 02906
Pediatrics
100 HIGHLAND AVE, SUITE 200
PROVIDENCE, RI 02906
Massage Therapist
100 HIGHLAND AVE, SUITE 102
PROVIDENCE, RI 02906
Pediatrics
100 HIGHLAND AVE, SUITE 201
PROVIDENCE, RI 02906
Internal Medicine (Endocrinology, Diabetes & Metabolism)
100 HIGHLAND AVE, SUITE 203
PROVIDENCE, RI 02906
Massage Therapist
100 HIGHLAND AVE, SUITE 102
PROVIDENCE, RI 02906
Internal Medicine (Endocrinology, Diabetes & Metabolism)
100 HIGHLAND AVE
PROVIDENCE, RI 02906
Nurse Practitioner (Pediatrics)
100 HIGHLAND AVE, SUITE 201
PROVIDENCE, RI 02906
Pediatrics
100 HIGHLAND AVE
PROVIDENCE, RI 02906
Surgery
100 HIGHLAND AVE, STE 308
PROVIDENCE, RI 02906
Internal Medicine
100 HIGHLAND AVE, SUITE 203
PROVIDENCE, RI 02906
Internal Medicine
100 HIGHLAND AVE, #302
PROVIDENCE, RI 02906
Nurse Practitioner (Family)
100 HIGHLAND AVE
PROVIDENCE, RI 02906
Preventive Medicine (Public Health & General Preventive Medicine)
100 HIGHLAND AVE, SUITE 303
PROVIDENCE, RI 02906

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1265267140, enumerated as an "individual" on September 03, 2024.

The provider is located at 100 HIGHLAND AVE PROVIDENCE, RI 02906 and the phone number is (401) 383-5051.

Counselor with taxonomy code 101Y00000X.