MR. FERNANDO DE GREEF L.P.C.
NPI 1427334168
Counselor - Professional in Washington, DC
NPI Status: Active since October 26, 2011
Contact Information
1050 17TH ST NW STE 1000
WASHINGTON, DC
ZIP 20036
Phone: (703) 371-1907
Fax: (703) 769-4948
- Individual
- Male
- Counselor
- Professional
- CLIA Number: 09D2273467
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 12-12-2026
About FERNANDO DE GREEF
This page provides the complete NPI Profile along with additional information for Fernando De Greef, a provider established in Washington, District Of Columbia with a medical specialization in Counselor, focusing in professional . The healthcare provider is registered in the NPI registry with number 1427334168 assigned on October 2011. The practitioner's primary taxonomy code is 101YP2500X with license number PRC14206 (DC). The provider is registered as an individual and his NPI record was last updated 15 years ago.
- NPI
- 1427334168
- Provider Name
- MR. FERNANDO DE GREEF L.P.C.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 1050 17TH ST NW STE 1000 WASHINGTON, DC 20036
- Location Phone
- (703) 371-1907
- Location Fax
- (703) 769-4948
- Mailing Address
- 2230 S RANDOLPH ST ARLINGTON, VA 22204
- Mailing Phone
- (703) 371-1907
- Mailing Fax
- (703) 769-4948
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 10-26-2011
- Last Update Date
- 10-26-2011
- 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
Counselor Professional
- Taxonomy Code
- 101YP2500X
- Type
- Behavioral Health & Social Service Providers
- License No.
- PRC14206
- License State
- DC
CLIA Information
The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:
- CLIA Number
- 09D2273467
- Facility Type
- Physician Office
- Certificate Effective Date
- December 13, 2024
- Certificate Expiration Date
- December 12, 2026
- Laboratory Director
- DR. FERNANDO PORTER
- Certificate Type
- Certificate of Waiver
- Certificate Type Description
- This CLIA certificate is issued to Fernando De Greef to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.
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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 1427334168, 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 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 62 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 4 providers are registered at the same or a nearby location.
WASHINGTON, DC 20036
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1427334168, enumerated as an "individual" on October 26, 2011.
The provider is located at 1050 17TH ST NW STE 1000 WASHINGTON, DC 20036 and the phone number is (703) 371-1907.
Counselor with taxonomy code 101YP2500X and a focus in Professional.
