DR. RACHEL SARA FISHER PHD
NPI 1104778802
Psychologist - Clinical Child & Adolescent in Wilmington, DE

NPI Status: Active since February 13, 2026

Contact Information

1600 ROCKLAND RD
WILMINGTON, DE
ZIP 19803
Phone: (239) 919-2544

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  • Individual
  • Female
  • Psychologist
  • Clinical Child & Adolescent

About RACHEL FISHER

This page provides the complete NPI Profile along with additional information for Rachel Fisher, a provider established in Wilmington, Delaware with a medical specialization in Psychologist, focusing in clinical child & adolescent . The healthcare provider is registered in the NPI registry with number 1104778802 assigned on February 2026. The practitioner's primary taxonomy code is 103TC2200X. The provider is registered as an individual and her NPI record was last updated February 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.

NPI
1104778802
Provider Name
DR. RACHEL SARA FISHER PHD
Gender
Female
Entity Type
Individual
Location Address
1600 ROCKLAND RD WILMINGTON, DE 19803
Location Phone
(239) 919-2544
Mailing Address
1600 ROCKLAND RD WILMINGTON, DE 19803
Is Sole Proprietor?
Yes
Enumeration Date
02-13-2026
Last Update Date
02-20-2026
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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 Clinical Child & Adolescent

Taxonomy Code
103TC2200X
Type
Behavioral Health & Social Service Providers
Taxonomy Description
A psychologist who develops and applies scientific knowledge to the delivery of psychological services to infants, toddlers, children and adolescents within their social context. Of particular importance to the specialty of clinical child psychology is an understanding of the basic psychological needs of children and adolescents, and how the family and other social contexts influence the socio-emotional adjustment, cognitive development, behavioral adaptation and health status of children and adolescents.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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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 1104778802, we treat the final digit (2) 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 58. The final step is to find the difference between that total and the next multiple of ten (60 - 58 = 2).

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
1
Unchanged
Pos 3
0
Doubled → 0
Pos 4
4
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
7
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
8
Unchanged
Pos 9
0
Doubled → 0
Check
2
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 0 → 0 7 → 14 → 5 8 → 16 → 7 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 0 + 4 + 1 + 4 + 7 + 1 + 6 + 8 + 0 + 24 = 58

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

The next multiple of ten after 58 is 60. The difference is the calculated check digit.

60 - 58 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1104778802.

Other Providers at the Same Location


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

Physician Assistant
1600 ROCKLAND RD
WILMINGTON, DE 19803
Physician Assistant
1600 ROCKLAND RD, DEPARTMENT OF ORTHOPEDICS, DUPONT HOSPITAL
WILMINGTON, DE 19803
Pediatrics (Pediatric Emergency Medicine)
1600 ROCKLAND RD
WILMINGTON, DE 19803
Audiologist
1600 ROCKLAND RD, AUDIOLOGY DEPARTMENT
WILMINGTON, DE 19803
Pharmacist
1600 ROCKLAND RD
WILMINGTON, DE 19803
Pediatrics (Pediatric Infectious Diseases)
1600 ROCKLAND RD
WILMINGTON, DE 19803
Pediatrics
1600 ROCKLAND RD
WILMINGTON, DE 19803
Pharmacist
1600 ROCKLAND RD, DUPONT HOSPITAL FOR CHILDREN
WILMINGTON, DE 19803
Pharmacist
1600 ROCKLAND RD
WILMINGTON, DE 19803
Social Worker (Clinical)
1600 ROCKLAND RD, A.I. DUPONT HOSPITAL FOR CHILDREN
WILMINGTON, DE 19803
Medical Genetics (Clinical Genetics (M.D.))
1600 ROCKLAND RD, MEDICAL GENETICS
WILMINGTON, DE 19803
Pediatrics
1600 ROCKLAND RD, A. I. DUPONT HOSPITAL FOR CHILDREN
WILMINGTON, DE 19803
Nurse Practitioner (Pediatrics)
1600 ROCKLAND RD
WILMINGTON, DE 19803
Radiology (Pediatric Radiology)
1600 ROCKLAND RD, DEPARTMENT OF RADIOLOGY, A.I DUPONT CHILDREN'S HOSPITAL
WILMINGTON, DE 19803
Audiologist
1600 ROCKLAND RD
WILMINGTON, DE 19803
Audiologist
1600 ROCKLAND RD, AUDIOLOGY DEPARTMENT
WILMINGTON, DE 19803
Speech-Language Pathologist
1600 ROCKLAND RD
WILMINGTON, DE 19803
Speech-Language Pathologist
1600 ROCKLAND RD
WILMINGTON, DE 19803
Speech-Language Pathologist
1600 ROCKLAND RD
WILMINGTON, DE 19803
Speech-Language Pathologist
1600 ROCKLAND RD
WILMINGTON, DE 19803

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1104778802, enumerated as an "individual" on February 13, 2026.

The provider is located at 1600 ROCKLAND RD WILMINGTON, DE 19803 and the phone number is (239) 919-2544.

Psychologist with taxonomy code 103TC2200X and a focus in Clinical Child & Adolescent.