KEI-LWUN YEE MD
NPI 1649859885
Internal Medicine - Rheumatology in Whittier, CA
NPI Status: Active since April 05, 2021
Contact Information
12462 PUTNAM ST STE 402
WHITTIER, CA
ZIP 90602
Phone: (562) 967-2788
Fax: (562) 789-4468
- Individual
- Male
- Internal Medicine
- Rheumatology
About KEI-LWUN YEE
This page provides the complete NPI Profile along with additional information for Kei-lwun Yee, an internist established in Whittier, California with a medical specialization in Internal Medicine, focusing in rheumatology . The healthcare provider is registered in the NPI registry with number 1649859885 assigned on April 2021. The practitioner's primary taxonomy code is 207RR0500X with license number A181842 (CA). The provider is registered as an individual and his NPI record was last updated February 2026.
- NPI
- 1649859885
- Provider Name
- KEI-LWUN YEE MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 12462 PUTNAM ST STE 402 WHITTIER, CA 90602
- Location Phone
- (562) 967-2788
- Location Fax
- (562) 789-4468
- Mailing Address
- 12462 PUTNAM ST STE 402 WHITTIER, CA 90602
- Is Sole Proprietor?
- No
- Enumeration Date
- 04-05-2021
- Last Update Date
- 02-04-2026
- Code Navigator
An internist like Kei-lwun Yee 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
- 12401 Washington Blvd
Whittier, CA 90602
(562) 698-0811
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 Rheumatology
- Taxonomy Code
- 207RR0500X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- A181842
- License State
- CA
- Taxonomy Description
- An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
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 | A181842 (CA) |
| 2 | 390200000X | Student, Health Care | Student in an Organized Health Care Education/Training Program |
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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 1649859885, 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 85. The final step is to find the difference between that total and the next multiple of ten (90 - 85 = 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 85 is 90. 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.
WHITTIER, CA 90602
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1649859885, enumerated as an "individual" on April 05, 2021.
The provider is located at 12462 PUTNAM ST STE 402 WHITTIER, CA 90602 and the phone number is (562) 967-2788.
Internal Medicine with taxonomy code 207RR0500X and a focus in Rheumatology.
