SWEE LAY THEIN MD
NPI 1992697643
Internal Medicine - Hematology in Bethesda, MD
NPI Status: Active since July 17, 2025
Contact Information
10 CENTER DR RM 6S241
BETHESDA, MD
ZIP 20892
Phone: (301) 648-0178
- Individual
- Female
- Internal Medicine
- Hematology
About SWEE LAY THEIN
This page provides the complete NPI Profile along with additional information for Swee Lay Thein, an internist established in Bethesda, Maryland with a medical specialization in Internal Medicine, focusing in hematology . The healthcare provider is registered in the NPI registry with number 1992697643 assigned on July 2025. The practitioner's primary taxonomy code is 207RH0000X with license number D0048419 (MD). The provider is registered as an individual and her NPI record was last updated one year ago.
- NPI
- 1992697643
- Provider Name
- SWEE LAY THEIN MD
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 10 CENTER DR RM 6S241 BETHESDA, MD 20892
- Location Phone
- (301) 648-0178
- Mailing Address
- 10 CENTER DR RM 6S241 BETHESDA, MD 20892
- Mailing Phone
- (301) 648-0178
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 07-17-2025
- Last Update Date
- 07-17-2025
- Code Navigator
An internist like Swee Lay Thein 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 Hematology
- Taxonomy Code
- 207RH0000X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- D0048419
- License State
- MD
- Taxonomy Description
- An internist with additional training who specializes in diseases of the blood, spleen and lymph. This specialist treats conditions such as anemia, clotting disorders, sickle cell disease, hemophilia, leukemia and lymphoma.
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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 1992697643, we treat the final digit (3) 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 3).
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 77 is 80. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1992697643, enumerated as an "individual" on July 17, 2025.
The provider is located at 10 CENTER DR RM 6S241 BETHESDA, MD 20892 and the phone number is (301) 648-0178.
Internal Medicine with taxonomy code 207RH0000X and a focus in Hematology.
