DR. STYLIANOS NICHOLAS THEOFANIDIS MD
NPI 1912926908
Pediatrics - Neonatal-Perinatal Medicine in Greenwich, CT
NPI Status: Active since July 19, 2006
Contact Information
5 PERRYRIDGE ROAD
GREENWICH HOSPITAL
GREENWICH, CT
ZIP 06830
Phone: (203) 863-3515
Fax: (203) 863-3816
- Individual
- Male
- Pediatrics
- Neonatal-Perinatal Medicine
About STYLIANOS THEOFANIDIS
This page provides the complete NPI Profile along with additional information for Stylianos Theofanidis, a pediatrician established in Greenwich, Connecticut with a medical specialization in Pediatrics, focusing in neonatal-perinatal medicine . The healthcare provider is registered in the NPI registry with number 1912926908 assigned on July 2006. The practitioner's primary taxonomy code is 2080N0001X with license number 028038 (CT). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1912926908
- Provider Name
- DR. STYLIANOS NICHOLAS THEOFANIDIS MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 5 PERRYRIDGE ROAD GREENWICH HOSPITAL GREENWICH, CT 06830
- Location Phone
- (203) 863-3515
- Location Fax
- (203) 863-3816
- Mailing Address
- PO BOX 673 OLD GREENWICH, CT 06870
- Mailing Phone
- (203) 863-3515
- Mailing Fax
- (203) 863-3816
- Is Sole Proprietor?
- No
- Enumeration Date
- 07-19-2006
- Last Update Date
- 09-11-2025
- Code Navigator
A pediatrician like Stylianos Theofanidis is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.
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
Pediatrics Neonatal-Perinatal Medicine
- Taxonomy Code
- 2080N0001X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 028038
- License State
- CT
- Taxonomy Description
- A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 208000000X | Allopathic & Osteopathic Physicians | Pediatrics | 028038 (CT) |
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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 1912926908, 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 11 providers are registered at the same or a nearby location.
GREENWICH, CT 06830
GREENWICH, CT 06830
GREENWICH, CT 06830
GREENWICH, CT 06830
GREENWICH, CT 06830
GREENWICH, CT 06830
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1912926908, enumerated as an "individual" on July 19, 2006.
The provider is located at 5 PERRYRIDGE ROAD GREENWICH HOSPITAL GREENWICH, CT 06830 and the phone number is (203) 863-3515.
Pediatrics with taxonomy code 2080N0001X and a focus in Neonatal-Perinatal Medicine.
