DR. RICHARD J. LESSOW M.D.
NPI 1780670570
Otolaryngology - Otolaryngic Allergy in Hartford, CT
NPI Status: Active since September 27, 2005
Contact Information
85 SEYMOUR ST
SUITE 318
HARTFORD, CT
ZIP 06106
Phone: (860) 493-1950
Fax: (860) 549-5270
- Individual
- Male
- Otolaryngology
- Otolaryngic Allergy
About RICHARD LESSOW
This page provides the complete NPI Profile along with additional information for Richard Lessow, a provider established in Hartford, Connecticut with a medical specialization in Otolaryngology, focusing in otolaryngic allergy . The healthcare provider is registered in the NPI registry with number 1780670570 assigned on September 2005. The practitioner's primary taxonomy code is 207YX0602X with license number 15098 (CT). The provider is registered as an individual and his NPI record was last updated one year ago.
- NPI
- 1780670570
- Provider Name
- DR. RICHARD J. LESSOW M.D.
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 85 SEYMOUR ST SUITE 318 HARTFORD, CT 06106
- Location Phone
- (860) 493-1950
- Location Fax
- (860) 549-5270
- Mailing Address
- 85 SEYMOUR ST SUITE 318 HARTFORD, CT 06106
- Mailing Phone
- (860) 493-1950
- Mailing Fax
- (860) 549-5270
- Is Sole Proprietor?
- No
- Enumeration Date
- 09-27-2005
- 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
Otolaryngology Otolaryngic Allergy
- Taxonomy Code
- 207YX0602X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- 15098
- License State
- CT
- Taxonomy Description
- An otolaryngologist who specializes in the diagnosis and treatment of otolaryngic allergies and other allergic 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 | 207Y00000X | Allopathic & Osteopathic Physicians | Otolaryngology | 15098 (CT) |
| 2 | 207YX0007X | Allopathic & Osteopathic Physicians | Otolaryngology | 15098 (CT) |
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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 1780670570, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).
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 60 is 60. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
HARTFORD, CT 06106
HARTFORD, CT 06106
HARTFORD, CT 06106
HARTFORD, CT 06106
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1780670570, enumerated as an "individual" on September 27, 2005.
The provider is located at 85 SEYMOUR ST SUITE 318 HARTFORD, CT 06106 and the phone number is (860) 493-1950.
Otolaryngology with taxonomy code 207YX0602X and a focus in Otolaryngic Allergy.
