MS. SUSAN ANN RETHLEFSEN P.T.
NPI 1063548543
Physical Therapist - Electrophysiology, Clinical in Los Angeles, CA
NPI Status: Active since February 26, 2007
Contact Information
4650 W SUNSET BLVD MSC 69
LOS ANGELES, CA
ZIP 90027
Phone: (323) 669-4120
Fax: (323) 666-4409
- Individual
- Female
- Physical Therapist
- Electrophysiology, Clinical
About SUSAN RETHLEFSEN
This page provides the complete NPI Profile along with additional information for Susan Rethlefsen, a provider established in Los Angeles, California with a medical specialization in Physical Therapist, focusing in electrophysiology, clinical . The healthcare provider is registered in the NPI registry with number 1063548543 assigned on February 2007. The practitioner's primary taxonomy code is 2251E1300X with license number 21 (CA). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1063548543
- Provider Name
- MS. SUSAN ANN RETHLEFSEN P.T.
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 4650 W SUNSET BLVD MSC 69 LOS ANGELES, CA 90027
- Location Phone
- (323) 669-4120
- Location Fax
- (323) 666-4409
- Mailing Address
- 4650 W SUNSET BLVD MSC 69 LOS ANGELES, CA 90027
- Mailing Phone
- (323) 669-4120
- Mailing Fax
- (323) 666-4409
- Is Sole Proprietor?
- No
- Enumeration Date
- 02-26-2007
- Last Update Date
- 09-11-2025
- 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
Physical Therapist Electrophysiology, Clinical
- Taxonomy Code
- 2251E1300X
- Type
- Respiratory, Developmental, Rehabilitative and Restorative Service Providers
- License No.
- 21
- License State
- CA
- Taxonomy Description
- A licensed physical therapist, including but not limited to an individual who is a Board Certified Specialist in Clinical Electrophysiologic Physical Therapy, who has demonstrated specialized knowledge and skill in electrophysiologic examinations and evaluations and encompasses both the professional and technical components of the observation, recording, analysis, and interpretation of bioelectric muscle and nerve potentials, detected by means of surface or needle electrodes, for the purpose of evaluating the integrity of the neuromuscular system. Electrophysiologic evaluations include, but are not limited to, electrodiagnostic testing, which includes clinical needle electromyography, motor and sensory nerve conduction studies, and other evoked potential procedures.
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 | 2251P0200X | Respiratory, Developmental, Rehabilitative and Restorative Service Providers | Physical Therapist | 13000 (CA) |
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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 1063548543, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).
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 57 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1063548543, enumerated as an "individual" on February 26, 2007.
The provider is located at 4650 W SUNSET BLVD MSC 69 LOS ANGELES, CA 90027 and the phone number is (323) 669-4120.
Physical Therapist with taxonomy code 2251E1300X and a focus in Electrophysiology, Clinical.
