MRS. ROSEMARIE FEJERANG RCP RRT AE-C
NPI 1861241564
Respiratory Therapist, Registered - Critical Care in San Francisco, CA
NPI Status: Active since May 15, 2024
Contact Information
1001 POTRERO AVE RM GC14
SAN FRANCISCO, CA
ZIP 94110
Phone: (628) 206-5742
- Individual
- Female
- Respiratory Therapist, Registered
- Critical Care
About ROSEMARIE FEJERANG
This page provides the complete NPI Profile along with additional information for Rosemarie Fejerang, a provider established in San Francisco, California with a medical specialization in Respiratory Therapist, Registered, focusing in critical care . The healthcare provider is registered in the NPI registry with number 1861241564 assigned on May 2024. The practitioner's primary taxonomy code is 2279C0205X with license number 25456 (CA). The provider is registered as an individual and her NPI record was last updated December 2025.
- NPI
- 1861241564
- Provider Name
- MRS. ROSEMARIE FEJERANG RCP RRT AE-C
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 1001 POTRERO AVE RM GC14 SAN FRANCISCO, CA 94110
- Location Phone
- (628) 206-5742
- Mailing Address
- 1001 POTRERO AVE RM GC14 SAN FRANCISCO, CA 94110
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-15-2024
- Last Update Date
- 12-10-2025
- 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
Respiratory Therapist, Registered Critical Care
- Taxonomy Code
- 2279C0205X
- Type
- Respiratory, Developmental, Rehabilitative and Restorative Service Providers
- License No.
- 25456
- License State
- CA
- Taxonomy Description
- A registered respiratory therapist specialized in the respiratory emergencies that are commonplace in the treatment of critical care patients. Included in the assessment measurements conducted by the respiratory therapist in the critical care settings are arterial blood gas puncture and analysis, intrarterial monitoring, bedside measurements of lung mechanics, hemodynamic monitoring, and inspired and expired gas measurements. This is coupled with the initiation and management of mechanical ventilation patients.
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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 1861241564, 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 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 56 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1861241564, enumerated as an "individual" on May 15, 2024.
The provider is located at 1001 POTRERO AVE RM GC14 SAN FRANCISCO, CA 94110 and the phone number is (628) 206-5742.
Respiratory Therapist, Registered with taxonomy code 2279C0205X and a focus in Critical Care.
