MICHAEL GRASSA DENTAL PC
NPI 1982597076
Clinic/Center - Dental in Sayville, NY
NPI Status: Active since May 29, 2025
Contact Information
207 W MAIN ST
SAYVILLE, NY
ZIP 11782
Phone: (631) 589-0672
- Organization
- Clinic/Center
- Dental
About MICHAEL GRASSA DENTAL PC
This page provides the complete NPI Profile along with additional information for Michael Grassa Dental Pc, a provider established in Sayville, New York operating as a Clinic/center, focusing in dental . The healthcare provider is registered in the NPI registry with number 1982597076 assigned on May 2025. The practitioner's primary taxonomy code is 261QD0000X. The provider is registered as an organization and their NPI record was last updated one year ago. The authorized official of this NPI record is Dr. Michael Thomas Grassa Dmd (Owner)
- NPI
- 1982597076
- Provider Name
- MICHAEL GRASSA DENTAL PC
- Entity Type
- Organization
- Location Address
- 207 W MAIN ST SAYVILLE, NY 11782
- Location Phone
- (631) 589-0672
- Mailing Address
- 153 TORONTO AVE MASSAPEQUA, NY 11758
- Mailing Phone
- (631) 365-9568
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 05-29-2025
- Last Update Date
- 05-29-2025
- 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
Clinic/Center Dental
- Taxonomy Code
- 261QD0000X
- Type
- Ambulatory Health Care Facilities
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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 1982597076, 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 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 64 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 1 provider is registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1982597076, enumerated as an "organization" on May 29, 2025.
The provider is located at 207 W MAIN ST SAYVILLE, NY 11782 and the phone number is (631) 589-0672.
Clinic/Center with taxonomy code 261QD0000X and a focus in Dental.
