DR. GERALD L KELLER PSY.D.
NPI 1982637724
Psychologist - Health Service in Philadelphia, PA
NPI Status: Active since July 07, 2006
Contact Information
1015 CHESTNUT ST
SUITE 312
PHILADELPHIA, PA
ZIP 19107
Phone: (215) 627-9088
Fax: (215) 741-4662
NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: July 12, 2026.
- Individual
- Male
- Psychologist
- Health Service
- PECOS Enrolled
About GERALD KELLER
This page provides the complete NPI Profile along with additional information for Gerald Keller, a provider established in Philadelphia, Pennsylvania with a medical specialization in Psychologist, focusing in health service . The healthcare provider is registered in the NPI registry with number 1982637724 assigned on July 2006. The practitioner's primary taxonomy code is 103TH0100X with license number PS008574L (PA). The provider is registered as an individual and his NPI record was last updated 19 years ago.
- NPI
- 1982637724
- Provider Name
- DR. GERALD L KELLER PSY.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1015 CHESTNUT ST SUITE 312 PHILADELPHIA, PA 19107
- Location Phone
- (215) 627-9088
- Location Fax
- (215) 741-4662
- Mailing Address
- 1015 CHESTNUT ST SUITE 312 PHILADELPHIA, PA 19107
- Mailing Phone
- (215) 627-9088
- Mailing Fax
- (215) 741-4662
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 07-07-2006
- Last Update Date
- 07-08-2007
- Code Navigator
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
Psychologist Health Service
- Taxonomy Code
- 103TH0100X
- Type
- Behavioral Health & Social Service Providers
- License No.
- PS008574L
- License State
- PA
- Taxonomy Description
- A psychologist, certified/licensed at the independent practice level in his/her state, who is duly trained and experienced in the delivery of direct, preventative, assessment, and therapeutic intervention services to individuals whose growth, adjustment, or functioning is actually impaired or is demonstrably at high risk of impairment (1974).
Medicare Participation & PECOS Enrollment Status
Gerald Keller is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Durable Medical Equipment (DME).
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.
Is the provider registered in PECOS? Yes
Eligible to Order or Refer Part B Clinical Laboratory and Imaging: No
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): No
Eligible to Order or Refer Power Mobility Devices: No
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Psychotherapy, 1 hour
Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 1-hour session, you'll talk about your feelings, thoughts, and behaviors to help identify and manage mental health issues. This process aids in personal growth, healing, and improved well-being.
This service was performed 1,051 times for 27 patientsReviews for DR. GERALD L KELLER PSY.D.
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
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 1982637724, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).
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 66 is 70. 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.
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1982637724, enumerated as an "individual" on July 07, 2006.
The provider is located at 1015 CHESTNUT ST SUITE 312 PHILADELPHIA, PA 19107 and the phone number is (215) 627-9088.
Psychologist with taxonomy code 103TH0100X and a focus in Health Service.
