CHRISTOPHER MICHAEL WARFIELD PHARM.D.
NPI 1639728330
Pharmacy - Community/Retail Pharmacy in Cambridge, MD

NPI Status: Active since September 05, 2019

Contact Information

640 SUNBURST HWY
CAMBRIDGE, MD
ZIP 21613
Phone: (410) 901-6290

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Pharmacy
Community/Retail Pharmacy

About CHRISTOPHER WARFIELD

This page provides the complete NPI Profile along with additional information for Christopher Warfield, a provider established in Cambridge, Maryland with a medical specialization in Pharmacy, focusing in community/retail pharmacy . The healthcare provider is registered in the NPI registry with number 1639728330 assigned on September 2019. The practitioner's primary taxonomy code is 3336C0003X with license number 26795 (MD). The provider is registered as an individual and his NPI record was last updated 7 years ago.

NPI: 1639728330
Provider Name: CHRISTOPHER MICHAEL WARFIELD PHARM.D.
Gender: Male
Entity Type: Individual
Location Address: 640 SUNBURST HWY CAMBRIDGE, MD 21613
Location Phone: (410) 901-6290
Mailing Address: 2554 SOUTHSIDE DR CAMBRIDGE, MD 21613
Is Sole Proprietor?: Yes
Enumeration Date: 09-05-2019
Last Update Date: 09-05-2019
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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: Pharmacy Community/Retail Pharmacy
Taxonomy Code: 3336C0003X
Type: Suppliers
License No.: 26795
License State: MD
Taxonomy Description: A pharmacy where pharmacists store, prepare, and dispense medicinal preparations and/or prescriptions for a local patient population in accordance with federal and state law; counsel patients and caregivers (sometimes independent of the dispensing process); administer vaccinations; and provide other professional services associated with pharmaceutical care such as health screenings, consultative services with other health care providers, collaborative practice, disease state management, and education classes.

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 1639728330, 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 6

Pos 4

Unchanged

Pos 5

Doubled → 14 → 1 + 4

Pos 6

Unchanged

Pos 7

Doubled → 16 → 1 + 6

Pos 8

Unchanged

Pos 9

Doubled → 6

Check

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 3 → 6 7 → 14 → 5 8 → 16 → 7 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 1 + 4 + 2 + 1 + 6 + 3 + 6 + 24 = 70

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

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

70 - 70 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1639728330.