DR. DEREK CULHANE UNDERHILL PHARM.D., M.B.A.
NPI 1669457586
Pharmacist in Fort Bragg, NC

NPI Status: Active since December 14, 2005

Contact Information

2817 REILLY RD
FORT BRAGG, NC
ZIP 28310
Phone: (910) 907-7061

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  • Individual
  • Male
  • Pharmacist

About DEREK UNDERHILL

This page provides the complete NPI Profile along with additional information for Derek Underhill, a provider established in Fort Bragg, North Carolina with a medical specialization in Pharmacist. The healthcare provider is registered in the NPI registry with number 1669457586 assigned on December 2005. The practitioner's primary taxonomy code is 183500000X with license number 17478 (NC). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1669457586
Provider Name
DR. DEREK CULHANE UNDERHILL PHARM.D., M.B.A.
Gender
Male
Entity Type
Individual
Location Address
2817 REILLY RD FORT BRAGG, NC 28310
Location Phone
(910) 907-7061
Mailing Address
606 RALEIGH ST FUQUAY VARINA, NC 27526
Mailing Phone
(919) 762-1530
Is Sole Proprietor?
Yes
Enumeration Date
12-14-2005
Last Update Date
09-11-2025
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A pharmacist like Derek Underhill fills prescription medications, verifying instructions from physicians and offers expertise in the safe use of prescriptions. Pharmacists instruct patients on how to take a prescribed medicine and educate patients about potential side effects. Pharmacists might also conduct health and wellness screenings, provide immunizations, oversee the medications given to patients, and provide advice on healthy lifestyles.

Location Map

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

Pharmacist

Taxonomy Code
183500000X
Type
Pharmacy Service Providers
License No.
17478
License State
NC
Taxonomy Description
An individual licensed by the appropriate state regulatory agency to engage in the practice of pharmacy. The practice of pharmacy includes, but is not limited to, assessment, interpretation, evaluation, and implementation, initiation, monitoring or modification of medication and or medical orders; the compounding or dispensing of medication and or medical orders; participation in drug and device procurement, storage, and selection; drug administration; drug regimen reviews; drug or drug-related research; provision of patient education and the provision of those acts or services necessary to provide medication therapy management services in all areas of patient care.

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)
11835N0905XPharmacy Service Providers

Pharmacist
Nuclear

17478 (NC)

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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 1669457586, 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 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
6
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
9
Unchanged
Pos 5
4
Doubled → 8
Pos 6
5
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
5
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 6 → 12 → 3 4 → 8 7 → 14 → 5 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 2 + 9 + 8 + 5 + 1 + 4 + 5 + 1 + 6 + 24 = 74

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

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1669457586.

Other Providers at the Same Location


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

Family Medicine
2817 REILLY RD, WAMC ATTN: DCCS
FORT BRAGG, NC 28310
Dietitian, Registered
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Nurse Anesthetist, Certified Registered
2817 REILLY RD
FORT BRAGG, NC 28310
Pharmacist
2817 REILLY RD, MCXC PH PHARMACY
FORT BRAGG, NC 28310
Psychologist
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Physician Assistant (Medical)
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Counselor (Mental Health)
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER, MCXC-COD CREDENTIALS
FORT BRAGG, NC 28310
Pharmacist (Pharmacotherapy)
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Family Medicine
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Social Worker (Clinical)
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Physician Assistant
2817 REILLY RD, CLARK HEALTH CLINIC
FORT BRAGG, NC 28310
Physician Assistant
2817 REILLY RD
FORT BRAGG, NC 28310
Pediatrics (Neonatal-Perinatal Medicine)
2817 REILLY RD
FORT BRAGG, NC 28310
Emergency Medicine
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Physician Assistant
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Physical Therapist
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Physical Therapist (Orthopedic)
2817 REILLY RD
FORT BRAGG, NC 28310
Physical Therapist (Orthopedic)
2817 REILLY RD
FORT BRAGG, NC 28310
Nuclear Medicine (Nuclear Imaging & Therapy)
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310
Physician Assistant
2817 REILLY RD, WOMACK ARMY MEDICAL CENTER
FORT BRAGG, NC 28310

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1669457586, enumerated as an "individual" on December 14, 2005.

The provider is located at 2817 REILLY RD FORT BRAGG, NC 28310 and the phone number is (910) 907-7061.

Pharmacist with taxonomy code 183500000X.