MJ MEDICAL GROUP,INC.
NPI 1528398369
Internal Medicine - Gastroenterology in Upland, CA
NPI Status: Active since December 29, 2009
Contact Information
1148 SAN BERNARDINO RD
SUITE202
UPLAND, CA
ZIP 91786
Phone: (909) 920-0444
Fax: (909) 920-5044
- Organization
- Internal Medicine
- Gastroenterology
About MJ MEDICAL GROUP,INC.
This page provides the complete NPI Profile along with additional information for Mj Medical Group,inc., an internist established in Upland, California operating as a Internal Medicine, focusing in gastroenterology . The healthcare provider is registered in the NPI registry with number 1528398369 assigned on December 2009. The practitioner's primary taxonomy code is 207RG0100X with license number A46078 (CA). The provider is registered as an organization and their NPI record was last updated March 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 Roula Jamal (Admin)
- NPI
- 1528398369
- Provider Name
- MJ MEDICAL GROUP,INC.
- Entity Type
- Organization
- Location Address
- 1148 SAN BERNARDINO RD SUITE202 UPLAND, CA 91786
- Location Phone
- (909) 920-0444
- Location Fax
- (909) 920-5044
- Mailing Address
- 2097 COMPTON AVE STE 103 CORONA, CA 92881
- Mailing Phone
- (951) 934-0505
- Mailing Fax
- (909) 920-5044
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 12-29-2009
- Last Update Date
- 03-17-2026
- Code Navigator
An internist like Mj Medical Group,inc. is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, 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
Internal Medicine Gastroenterology
- Taxonomy Code
- 207RG0100X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A46078
- License State
- CA
- Taxonomy Description
- An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.
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 1528398369, we treat the final digit (9) 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 71. The final step is to find the difference between that total and the next multiple of ten (80 - 71 = 9).
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 71 is 80. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1528398369, enumerated as an "organization" on December 29, 2009.
The provider is located at 1148 SAN BERNARDINO RD SUITE202 UPLAND, CA 91786 and the phone number is (909) 920-0444.
Internal Medicine with taxonomy code 207RG0100X and a focus in Gastroenterology.
