DR. WILLIAM MICHAEL BARRETO M.D.
NPI 1053526285
Physical Medicine & Rehabilitation - Pain Medicine in Torrance, CA
NPI Status: Active since May 11, 2007
Contact Information
23530 HAWTHORNE BLVD STE 290
TORRANCE, CA
ZIP 90505
Phone: (424) 903-7007
Fax: (424) 903-7009
- Individual
- Male
- Physical Medicine & Rehabilitation
- Pain Medicine
- PECOS Enrolled
- CLIA Number: 05D0686346
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 03-31-2027
About WILLIAM BARRETO
This page provides the complete NPI Profile along with additional information for William Barreto, a provider established in Torrance, California with a medical specialization in Physical Medicine & Rehabilitation, focusing in pain medicine . The healthcare provider is registered in the NPI registry with number 1053526285 assigned on May 2007. The practitioner's primary taxonomy code is 2081P2900X with license number A91430 (CA). The provider is registered as an individual and his NPI record was last updated 2 years ago.
- NPI
- 1053526285
- Provider Name
- DR. WILLIAM MICHAEL BARRETO M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 23530 HAWTHORNE BLVD STE 290 TORRANCE, CA 90505
- Location Phone
- (424) 903-7007
- Location Fax
- (424) 903-7009
- Mailing Address
- 30768 AUBERRY RD AUBERRY, CA 93602
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-11-2007
- Last Update Date
- 04-03-2024
- 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 Medicine & Rehabilitation Pain Medicine
- Taxonomy Code
- 2081P2900X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A91430
- License State
- CA
- Taxonomy Description
- A physician who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic or cancer pain in both hospital and ambulatory settings. Patient care needs may also be coordinated with other specialists.
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 | 2081H0002X | Allopathic & Osteopathic Physicians | Physical Medicine & Rehabilitation | A91430 (CA) |
Medicare Participation & PECOS Enrollment Status
William Barreto 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: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
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: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
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
- 05D0686346
- Facility Type
- Physician Office
- Certificate Effective Date
- April 01, 2025
- Certificate Expiration Date
- March 31, 2027
- Laboratory Director
- WILLIAM J. WICKWIRE, MD
- Certificate Type
- Certificate for Provider-Performed Microscopy Procedures (PPMP)
- Certificate Type Description
- This CLIA certificate is issued to William Barreto in which a physician, midlevel practitioner or dentist that performs specific microscopy procedures during the course of a patient's visit. A limited list of provider-performed microscopy procedures is included under this certificate type, which are categorized as moderate complexity testing.
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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 1053526285, we treat the final digit (5) 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 45. The final step is to find the difference between that total and the next multiple of ten (50 - 45 = 5).
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 45 is 50. The difference is the calculated check digit.
Other Providers at the Same Location
The following 3 providers are registered at the same or a nearby location.
TORRANCE, CA 90505
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1053526285, enumerated as an "individual" on May 11, 2007.
The provider is located at 23530 HAWTHORNE BLVD STE 290 TORRANCE, CA 90505 and the phone number is (424) 903-7007.
Physical Medicine & Rehabilitation with taxonomy code 2081P2900X and a focus in Pain Medicine.
