MR. MARK NORMAN GRAVDAL R.PH., CGP
NPI 1780988535
Pharmacist - Geriatric in Crystal Lake, IL

NPI Status: Active since January 07, 2011

Contact Information

297 CASCADE DR
CRYSTAL LAKE, IL
ZIP 60012
Phone: (815) 479-8363

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  • Individual
  • Male
  • Pharmacist
  • Geriatric

About MARK GRAVDAL

This page provides the complete NPI Profile along with additional information for Mark Gravdal, a provider established in Crystal Lake, Illinois with a medical specialization in Pharmacist, focusing in geriatric . The healthcare provider is registered in the NPI registry with number 1780988535 assigned on January 2011. The practitioner's primary taxonomy code is 1835G0303X with license number 051030001 (IL). The provider is registered as an individual and his NPI record was last updated 15 years ago.

NPI
1780988535
Provider Name
MR. MARK NORMAN GRAVDAL R.PH., CGP
Gender
Male
Entity Type
Individual
Location Address
297 CASCADE DR CRYSTAL LAKE, IL 60012
Location Phone
(815) 479-8363
Mailing Address
297 CASCADE DR CRYSTAL LAKE, IL 60012
Mailing Phone
(815) 479-8363
Is Sole Proprietor?
Yes
Enumeration Date
01-07-2011
Last Update Date
01-07-2011
Code Navigator

A pharmacist like Mark Gravdal 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 Geriatric

Taxonomy Code
1835G0303X
Type
Pharmacy Service Providers
License No.
051030001
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 1780988535, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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
7
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
0
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
8
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
5
Unchanged
Pos 9
3
Doubled → 6
Check
5
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 8 → 16 → 7 9 → 18 → 9 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 + 7 + 1 + 6 + 0 + 1 + 8 + 8 + 1 + 6 + 5 + 6 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1780988535.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1780988535, enumerated as an "individual" on January 07, 2011.

The provider is located at 297 CASCADE DR CRYSTAL LAKE, IL 60012 and the phone number is (815) 479-8363.

Pharmacist with taxonomy code 1835G0303X and a focus in Geriatric.