NORTHERN FAMILY DENTISTRY
NPI 1912635400
Clinic/Center - Dental in Roscommon, MI

NPI Status: Active since August 11, 2022

Contact Information

100 SHERWOOD DR
ROSCOMMON, MI
ZIP 48653
Phone: (989) 275-1919
Fax: (989) 275-1619

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  • Organization
  • Clinic/Center
  • Dental
  • CLIA Number: 23D2173915
  • CLIA Cert. Type: Federally Qualified Health Center
  • CLIA Exp. Date: 10-21-2027

About NORTHERN FAMILY DENTISTRY

This page provides the complete NPI Profile along with additional information for Northern Family Dentistry, a provider established in Roscommon, Michigan operating as a Clinic/center, focusing in dental . The healthcare provider is registered in the NPI registry with number 1912635400 assigned on August 2022. The practitioner's primary taxonomy code is 261QD0000X. The provider is registered as an organization and their NPI record was last updated 4 years ago. The authorized official of this NPI record is Dr. Karrie Tieppo Williams Dds (Owner/dentist)

NPI
1912635400
Provider Name
NORTHERN FAMILY DENTISTRY
Entity Type
Organization
Location Address
100 SHERWOOD DR ROSCOMMON, MI 48653
Location Phone
(989) 275-1919
Location Fax
(989) 275-1619
Mailing Address
PO BOX 920 ROSCOMMON, MI 48653
Mailing Phone
(989) 275-1919
Mailing Fax
(989) 275-1619
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
08-11-2022
Last Update Date
08-11-2022
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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

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. KARRIE TIEPPO WILLIAMS DDS

Authorized Official Title
OWNER/DENTIST
Authorized Official Phone
(989) 275-1919

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
23D2173915
Facility Type
Federally Qualified Health Center
Certificate Effective Date
October 22, 2025
Certificate Expiration Date
October 21, 2027
Laboratory Director
LYNDSY J. MCMORROW
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Northern Family Dentistry to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1912635400, 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 50. The final step is to find the difference between that total and the next multiple of ten (50 - 50 = 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.

Pos 1
1
Doubled → 2
Pos 2
9
Unchanged
Pos 3
1
Doubled → 2
Pos 4
2
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
3
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
4
Unchanged
Pos 9
0
Doubled → 0
Check
0
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 1 → 2 6 → 12 → 3 5 → 10 → 1 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 2 + 2 + 1 + 2 + 3 + 1 + 0 + 4 + 0 + 24 = 50

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

The next multiple of ten after 50 is 50. The difference is the calculated check digit.

50 - 50 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1912635400.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Dentist
100 SHERWOOD DR
ROSCOMMON, MI 48653

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1912635400, enumerated as an "organization" on August 11, 2022.

The provider is located at 100 SHERWOOD DR ROSCOMMON, MI 48653 and the phone number is (989) 275-1919.

Clinic/Center with taxonomy code 261QD0000X and a focus in Dental.