DR. LOUIS NEMSER MD
NPI 1902895857
Psychiatry & Neurology - Geriatric Psychiatry in Needham, MA
NPI Status: Active since October 13, 2005
Contact Information
992 GREAT PLAIN AVE
NEEDHAM, MA
ZIP 02492
Phone: (781) 433-0225
- Individual
- Male
- Psychiatry & Neurology
- Geriatric Psychiatry
About LOUIS NEMSER
This page provides the complete NPI Profile along with additional information for Louis Nemser, a provider established in Needham, Massachusetts with a medical specialization in Psychiatry & Neurology, focusing in geriatric psychiatry . The healthcare provider is registered in the NPI registry with number 1902895857 assigned on October 2005. The practitioner's primary taxonomy code is 2084P0805X with license number 4304043086 (MI). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1902895857
- Provider Name
- DR. LOUIS NEMSER MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 992 GREAT PLAIN AVE NEEDHAM, MA 02492
- Location Phone
- (781) 433-0225
- Mailing Address
- 992 GREAT PLAIN AVE NEEDHAM, MA 02492
- Mailing Phone
- (781) 433-0225
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-13-2005
- Last Update Date
- 09-11-2025
- Code Navigator
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
Psychiatry & Neurology Geriatric Psychiatry
- Taxonomy Code
- 2084P0805X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 4304043086
- License State
- MI
- Taxonomy Description
- Geriatric Psychiatry is a subspecialty with psychiatric expertise in prevention, evaluation, diagnosis and treatment of mental and emotional disorders in the elderly, and improvement of psychiatric care for healthy and ill elderly patients.
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 | 2084P0804X | Allopathic & Osteopathic Physicians | Psychiatry & Neurology | 204082 (MA) |
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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 1902895857, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).
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 63 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 13 providers are registered at the same or a nearby location.
NEEDHAM, MA 02492
NEEDHAM, MA 02492
NEEDHAM, MA 02492
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1902895857, enumerated as an "individual" on October 13, 2005.
The provider is located at 992 GREAT PLAIN AVE NEEDHAM, MA 02492 and the phone number is (781) 433-0225.
Psychiatry & Neurology with taxonomy code 2084P0805X and a focus in Geriatric Psychiatry.
