JOEL R GREENSPAN M.D.
NPI 1821248097
Preventive Medicine - Public Health & General Preventive Medicine in Atlanta, GA

NPI Status: Active since September 24, 2008

Contact Information

685 GREYSTONE PARK NE
ATLANTA, GA
ZIP 30324
Phone: (404) 271-2240
Fax: (404) 872-6208

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  • Individual
  • Male
  • Preventive Medicine
  • Public Health & General Preventive Medic...

About JOEL GREENSPAN

This page provides the complete NPI Profile along with additional information for Joel Greenspan, a provider established in Atlanta, Georgia with a medical specialization in Preventive Medicine, focusing in public health & general preventive medicine . The healthcare provider is registered in the NPI registry with number 1821248097 assigned on September 2008. The practitioner's primary taxonomy code is 2083P0901X with license number 021001 (GA). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1821248097
Provider Name
JOEL R GREENSPAN M.D.
Gender
Male
Entity Type
Individual
Location Address
685 GREYSTONE PARK NE ATLANTA, GA 30324
Location Phone
(404) 271-2240
Location Fax
(404) 872-6208
Mailing Address
685 GREYSTONE PARK NE ATLANTA, GA 30324
Mailing Phone
(404) 271-2240
Mailing Fax
(404) 872-6208
Is Sole Proprietor?
Yes
Enumeration Date
09-24-2008
Last Update Date
09-24-2008
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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

Preventive Medicine Public Health & General Preventive Medicine

Taxonomy Code
2083P0901X
Type
Allopathic & Osteopathic Physicians
License No.
021001
License State
GA
Taxonomy Description
Public health and general preventive medicine focuses on promoting health, preventing disease, and managing the health of communities and defined populations. These practitioners combine population-based public health skills with knowledge of primary, secondary, and tertiary prevention-oriented clinical practice in a wide variety of settings.

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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 1821248097, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
8
Unchanged
Pos 3
2
Doubled → 4
Pos 4
1
Unchanged
Pos 5
2
Doubled → 4
Pos 6
4
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
0
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
7
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 2 → 4 2 → 4 8 → 16 → 7 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 4 + 1 + 4 + 4 + 1 + 6 + 0 + 1 + 8 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1821248097.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821248097, enumerated as an "individual" on September 24, 2008.

The provider is located at 685 GREYSTONE PARK NE ATLANTA, GA 30324 and the phone number is (404) 271-2240.

Preventive Medicine with taxonomy code 2083P0901X and a focus in Public Health & General Preventive Medicine.