CARRILLO, URBINA & CASTUERA INC
NPI 1811184526
General Practice in Montclair, CA
NPI Status: Active since September 26, 2007
Contact Information
4451 HOLT BLVD
MONTCLAIR, CA
ZIP 91763
Phone: (909) 624-3033
Fax: (909) 624-8440
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Organization
- General Practice
About CARRILLO, URBINA & CASTUERA INC
This page provides the complete NPI Profile along with additional information for Carrillo, Urbina & Castuera Inc, a primary care provider established in Montclair, California operating as a General Practice. The healthcare provider is registered in the NPI registry with number 1811184526 assigned on September 2007. The practitioner's primary taxonomy code is 208D00000X with license number A71133 (CA). The provider is registered as an organization and their NPI record was last updated June 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Marvin E Urbina Md (President)
- NPI
- 1811184526
- Provider Name
- CARRILLO, URBINA & CASTUERA INC
- Other Name Type
- (6)
- Entity Type
- Organization
- Location Address
- 4451 HOLT BLVD MONTCLAIR, CA 91763
- Location Phone
- (909) 624-3033
- Location Fax
- (909) 624-8440
- Mailing Address
- 4451 HOLT BLVD MONTCLAIR, CA 91763
- Mailing Phone
- (909) 624-3033
- Mailing Fax
- (909) 624-8440
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 09-26-2007
- Last Update Date
- 06-15-2026
- Code Navigator
A primary care provider (PCP) like Carrillo, Urbina & Castuera Inc sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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
General Practice
- Taxonomy Code
- 208D00000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A71133
- License State
- CA
- Taxonomy Description
- A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
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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 1811184526, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).
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 64 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 1 provider is registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1811184526, enumerated as an "organization" on September 26, 2007.
The provider is located at 4451 HOLT BLVD MONTCLAIR, CA 91763 and the phone number is (909) 624-3033.
General Practice with taxonomy code 208D00000X.
