MERRIMACK PERIO & IMPLANTS PLLC
NPI 1962290379
Dentist - Periodontics in Nashua, NH

NPI Status: Active since April 26, 2025

Contact Information

155 MAIN DUNSTABLE RD STE 220
NASHUA, NH
ZIP 03060
Phone: (603) 699-9888

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  • Organization
  • Dentist
  • Periodontics

About MERRIMACK PERIO & IMPLANTS PLLC

This page provides the complete NPI Profile along with additional information for Merrimack Perio & Implants Pllc, a provider established in Nashua, New Hampshire operating as a Dentist, focusing in periodontics . The healthcare provider is registered in the NPI registry with number 1962290379 assigned on April 2025. The practitioner's primary taxonomy code is 1223P0300X. The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Howard Yen Dmd (Owner)

NPI
1962290379
Provider Name
MERRIMACK PERIO & IMPLANTS PLLC
Entity Type
Organization
Location Address
155 MAIN DUNSTABLE RD STE 220 NASHUA, NH 03060
Location Phone
(603) 699-9888
Mailing Address
155 MAIN DUNSTABLE RD STE 220 NASHUA, NH 03060
Mailing Phone
(603) 699-9888
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
04-26-2025
Last Update Date
04-26-2025
Code Navigator

A dentist like Merrimack Perio & Implants Pllc is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

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

Dentist Periodontics

Taxonomy Code
1223P0300X
Type
Dental Providers
Taxonomy Description
That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. HOWARD YEN DMD

Authorized Official Title
OWNER
Authorized Official Phone
(678) 622-8288

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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 1962290379, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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.

Pos 1
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
2
Unchanged
Pos 5
2
Doubled → 4
Pos 6
9
Unchanged
Pos 7
0
Doubled → 0
Pos 8
3
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
9
Target digit
Regular digit Doubled digit Check digit

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.

1 → 2 6 → 12 → 3 2 → 4 0 → 0 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 9 + 1 + 2 + 2 + 4 + 9 + 0 + 3 + 1 + 4 + 24 = 61

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1962290379.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Clinic/Center (Dental)
155 MAIN DUNSTABLE RD STE 220
NASHUA, NH 03060
Dentist (Periodontics)
155 MAIN DUNSTABLE RD STE 220
NASHUA, NH 03060

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1962290379, enumerated as an "organization" on April 26, 2025.

The provider is located at 155 MAIN DUNSTABLE RD STE 220 NASHUA, NH 03060 and the phone number is (603) 699-9888.

Dentist with taxonomy code 1223P0300X and a focus in Periodontics.