ORTHOPEDIC TRAUMA SURGEONS OF NORTHERN CALIFORNIA
NPI 1821031741
Orthopaedic Surgery - Orthopaedic Trauma in Carmichael, CA

NPI Status: Active since June 14, 2006

Contact Information

6620 COYLE AVE STE 212
CARMICHAEL, CA
ZIP 95608
Phone: (916) 536-9455
Fax: (916) 536-9424

NPI Profile Information
Primary Taxonomy
Group Taxonomy
Secondary Locations
Authorized Official
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Organization
Orthopaedic Surgery
Orthopaedic Trauma

About ORTHOPEDIC TRAUMA SURGEONS OF NORTHERN CALIFORNIA

This page provides the complete NPI Profile along with additional information for Orthopedic Trauma Surgeons Of Northern California, a provider established in Carmichael, California operating as a Orthopaedic Surgery, focusing in orthopaedic trauma . The healthcare provider is registered in the NPI registry with number 1821031741 assigned on June 2006. The practitioner's primary taxonomy code is 207XX0801X. The provider is registered as an organization and their NPI record was last updated February 2026. 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 Christopher Glenn Finkemeier Md (Corp Ofcr)

NPI: 1821031741
Provider Name: ORTHOPEDIC TRAUMA SURGEONS OF NORTHERN CALIFORNIA
Entity Type: Organization
Location Address: 6620 COYLE AVE STE 212 CARMICHAEL, CA 95608
Location Phone: (916) 536-9455
Location Fax: (916) 536-9424
Mailing Address: 6620 COYLE AVE STE 212 CARMICHAEL, CA 95608
Mailing Phone: (916) 536-9455
Mailing Fax: (916) 536-9424
Is Sole Proprietor?: No
Is Organization Subpart?: No
Enumeration Date: 06-14-2006
Last Update Date: 02-10-2026
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Location Map

Secondary Locations

1451 Secret Ravine Pkwy Ste 150
Roseville, CA 95661
(916) 536-9455

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: Orthopaedic Surgery Orthopaedic Trauma
Taxonomy Code: 207XX0801X
Type: Allopathic & Osteopathic Physicians
Taxonomy Description: Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic trauma surgeons deal with the evaluation and management of acute orthopaedic injuries, evaluation and treatment of post-traumatic deformities and nonunions, acute and delayed reconstruction of pelvic and acetabular fractures, as well as osteotomy in the adult hip for treatment of hip arthritis.

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: CHRISTOPHER GLENN FINKEMEIER MD
Authorized Official Title: CORP OFCR
Authorized Official Phone: (916) 536-9455

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 1821031741, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 4

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 8

Check

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 2 → 4 0 → 0 1 → 2 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 4 + 1 + 0 + 3 + 2 + 7 + 8 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1

This NPI is valid

The calculated check digit is 1, which matches the last digit of 1821031741.