MARK SLY PHARMD
NPI 1679848618
Pharmacist - Geriatric in Saint Louis, MO
NPI Status: Active since March 08, 2012
Contact Information
1 JEFFERSON BARRACKS DR
SAINT LOUIS, MO
ZIP 63125
Phone: (309) 663-8852
- Individual
- Male
- Pharmacist
- Geriatric
About MARK SLY
This page provides the complete NPI Profile along with additional information for Mark Sly, a provider established in Saint Louis, Missouri with a medical specialization in Pharmacist, focusing in geriatric . The healthcare provider is registered in the NPI registry with number 1679848618 assigned on March 2012. The practitioner's primary taxonomy code is 1835G0303X with license number 051295174 (IL). The provider is registered as an individual and his NPI record was last updated April 2026.
- NPI
- 1679848618
- Provider Name
- MARK SLY PHARMD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1 JEFFERSON BARRACKS DR SAINT LOUIS, MO 63125
- Location Phone
- (309) 663-8852
- Mailing Address
- 1 JEFFERSON BARRACKS DR SAINT LOUIS, MO 63125
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 03-08-2012
- Last Update Date
- 04-29-2026
- Code Navigator
A pharmacist like Mark Sly 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
Secondary Locations
- 915 N Grand Blvd
Saint Louis, MO 63106
(314) 652-4100
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 Geriatric
- Taxonomy Code
- 1835G0303X
- Type
- Pharmacy Service Providers
- License No.
- 051295174
- License State
- IL
- Taxonomy Description
- A pharmacist who is certified in geriatric pharmacy practice is designated as a Certified Geriatric Pharmacist (CGP). To become certified, candidates are expected to be knowledgeable about principles of geriatric pharmacotherapy and the provision of pharmaceutical care to the elderly.
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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 1679848618, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 72 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
SAINT LOUIS, MO 63125
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1679848618, enumerated as an "individual" on March 08, 2012.
The provider is located at 1 JEFFERSON BARRACKS DR SAINT LOUIS, MO 63125 and the phone number is (309) 663-8852.
Pharmacist with taxonomy code 1835G0303X and a focus in Geriatric.
