JENNIFER FLAMM FORTNER M.D.
NPI 1821133737
Psychiatry & Neurology - Psychiatry in Atlanta, GA

NPI Status: Active since February 20, 2007

Contact Information

2295 PARKLAKE DRIVE NW
SUITE 430
ATLANTA, GA
ZIP 30345
Phone: (404) 800-5680
Fax: (678) 712-7875

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  • Individual
  • Female
  • Psychiatry & Neurology
  • Psychiatry
  • Opted-Out Medicare

About JENNIFER FORTNER

This page provides the complete NPI Profile along with additional information for Jennifer Fortner, a provider established in Atlanta, Georgia with a medical specialization in Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1821133737 assigned on February 2007. The practitioner's primary taxonomy code is 2084P0800X with license number 054718 (GA). The provider is registered as an individual and her NPI record was last updated December 2025.

NPI
1821133737
Provider Name
JENNIFER FLAMM FORTNER M.D.
Gender
Female
Entity Type
Individual
Location Address
2295 PARKLAKE DRIVE NW SUITE 430 ATLANTA, GA 30345
Location Phone
(404) 800-5680
Location Fax
(678) 712-7875
Mailing Address
3435 BULLOCH LAKE RD LOGANVILLE, GA 30052
Mailing Phone
(404) 791-5840
Mailing Fax
(678) 712-7875
Is Sole Proprietor?
Yes
Enumeration Date
02-20-2007
Last Update Date
12-15-2025
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A psychiatrist like Jennifer Fortner are primary mental health physicians diagnose and treat mental illnesses through psychotherapy, psychoanalysis, hospitalization and medication. Psychiatrist help patients find solutions through changes in their behavioral patterns, explorations of experiences, group and family therapy.

The provider doesn't accept Medicare and has signed an affidavit to be excluded from the Medicare program. If you are a Medicare beneficiary this means a provider can charge whatever they want for services rendered but must follow certain rules to do so. Jennifer Fortner opted out of Medicare effective on 01-21-2016 until 01-21-2026. Opt out periods last for two years and cannot be terminated unless the provider is opting out for the very first time and the affidavit is terminated no later than 90 days after the opt out effective date. Opt-out affidavits might renew automatically renew every two years. The provider opted out of Medicare and cannot order and refer services to other healthcare providers.

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

Psychiatry & Neurology Psychiatry

Taxonomy Code
2084P0800X
Type
Allopathic & Osteopathic Physicians
License No.
054718
License State
GA
Taxonomy Description
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Medicare Participation & PECOS Enrollment Status

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Opted-Out of Medicare? Yes

  • Opt-Out Effective Date: 01-21-2016

  • Opt-Out End Date: 01-21-2026

  • Eligible to Order and Refer? No

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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 1821133737, 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
1
Doubled → 2
Pos 6
3
Unchanged
Pos 7
3
Doubled → 6
Pos 8
7
Unchanged
Pos 9
3
Doubled → 6
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 1 → 2 3 → 6 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 4 + 1 + 2 + 3 + 6 + 7 + 6 + 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 1821133737.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821133737, enumerated as an "individual" on February 20, 2007.

The provider is located at 2295 PARKLAKE DRIVE NW SUITE 430 ATLANTA, GA 30345 and the phone number is (404) 800-5680.

Psychiatry & Neurology with taxonomy code 2084P0800X and a focus in Psychiatry.