HYUNJU LEE MD A PROFESSIONAL CORPORATION
NPI 1245103126
Internal Medicine - Endocrinology, Diabetes & Metabolism in La Palma, CA
NPI Status: Active since September 26, 2025
Contact Information
7851 WALKER ST STE 102
LA PALMA, CA
ZIP 90623
Phone: (714) 422-0440
Fax: (714) 494-4210
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Organization
- Internal Medicine
- Endocrinology, Diabetes & Metabolism
About HYUNJU LEE MD A PROFESSIONAL CORPORATION
This page provides the complete NPI Profile along with additional information for Hyunju Lee Md A Professional Corporation, an internist established in La Palma, California operating as a Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1245103126 assigned on September 2025. The practitioner's primary taxonomy code is 207RE0101X. The provider is registered as an organization and their NPI record was last updated July 2026. Hyunju Lee Md A Professional Corporation 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 Hyunju Lee Md (Physician)
- NPI
- 1245103126
- Provider Name
- HYUNJU LEE MD A PROFESSIONAL CORPORATION
- Entity Type
- Organization
- Location Address
- 7851 WALKER ST STE 102 LA PALMA, CA 90623
- Location Phone
- (714) 422-0440
- Location Fax
- (714) 494-4210
- Mailing Address
- 12372 GARDEN GROVE BLVD STE B GARDEN GROVE, CA 92843
- Mailing Phone
- (714) 583-8569
- Mailing Fax
- (714) 494-4210
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 09-26-2025
- Last Update Date
- 07-01-2026
- Code Navigator
An internist like Hyunju Lee Md A Professional Corporation 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
Secondary Locations
- 12372 Garden Grove Blvd Ste B
Garden Grove, CA 92843
(714) 583-8569
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
- 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) |
|---|---|---|---|---|
| 1 | 207R00000X | Allopathic & Osteopathic Physicians | Internal Medicine |
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.
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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 1245103126, 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 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 54 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 2 providers are registered at the same or a nearby location.
LA PALMA, CA 90623
LA PALMA, CA 90623
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1245103126, enumerated as an "organization" on September 26, 2025.
The provider is located at 7851 WALKER ST STE 102 LA PALMA, CA 90623 and the phone number is (714) 422-0440.
Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.
