CHAPARRAL MEDICAL GROUP, INC.
NPI 1376940221
Internal Medicine - Endocrinology, Diabetes & Metabolism in Rancho Cucamonga, CA

NPI Status: Active since November 20, 2014

Contact Information

9170 HAVEN AVE
SUITE 120
RANCHO CUCAMONGA, CA
ZIP 91730
Phone: (909) 467-8700
Fax: (909) 987-1400

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  • Organization
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism
  • CLIA Number: 05D2092666
  • CLIA Cert. Type: Physician Office
  • CLIA Exp. Date: 03-09-2027

About CHAPARRAL MEDICAL GROUP, INC.

This page provides the complete NPI Profile along with additional information for Chaparral Medical Group, Inc., an internist established in Rancho Cucamonga, California operating as a Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1376940221 assigned on November 2014. The practitioner's primary taxonomy code is 207RE0101X. The provider is registered as an organization and their NPI record was last updated 4 years ago. Chaparral Medical Group, Inc. operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Prasad Jeereddi Md (Ceo)

NPI
1376940221
Provider Name
CHAPARRAL MEDICAL GROUP, INC.
Entity Type
Organization
Location Address
9170 HAVEN AVE SUITE 120 RANCHO CUCAMONGA, CA 91730
Location Phone
(909) 467-8700
Location Fax
(909) 987-1400
Mailing Address
840 TOWNE CENTER DR POMONA, CA 91767
Mailing Phone
(909) 398-1550
Mailing Fax
(909) 987-1400
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
11-20-2014
Last Update Date
10-18-2022
Code Navigator

An internist like Chaparral 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 Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License State
CA
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

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)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

 
2207RR0500XAllopathic & Osteopathic Physicians

Internal Medicine
Rheumatology

 

Group Taxonomy 193200000X MULTI-SPECIALTY GROUP

This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

PRASAD JEEREDDI MD

Authorized Official Title
CEO
Authorized Official Phone
(909) 624-8444

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
05D2092666
Facility Type
Physician Office
Certificate Effective Date
March 10, 2025
Certificate Expiration Date
March 09, 2027
Laboratory Director
EWA H. KONCA, MD
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Chaparral Medical Group, Inc. to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1376940221, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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.

Pos 1
1
Doubled → 2
Pos 2
3
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
6
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
4
Unchanged
Pos 7
0
Doubled → 0
Pos 8
2
Unchanged
Pos 9
2
Doubled → 4
Check
1
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 7 → 14 → 5 9 → 18 → 9 0 → 0 2 → 4

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 3 + 1 + 4 + 6 + 1 + 8 + 4 + 0 + 2 + 4 + 24 = 59

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1376940221.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Pharmacy (Community/Retail Pharmacy)
9170 HAVEN AVE, STE 122
RANCHO CUCAMONGA, CA 91730

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1376940221, enumerated as an "organization" on November 20, 2014.

The provider is located at 9170 HAVEN AVE SUITE 120 RANCHO CUCAMONGA, CA 91730 and the phone number is (909) 467-8700.

Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.