MAGGIE ARMSTRONG OT LLC
NPI 1134090343
Clinic/Center in Portland, OR

NPI Status: Active since September 12, 2025

Contact Information

9406 N SYRACUSE ST
PORTLAND, OR
ZIP 97203
Phone: (770) 363-7438

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  • Organization
  • Clinic/Center

About MAGGIE ARMSTRONG OT LLC

This page provides the complete NPI Profile along with additional information for Maggie Armstrong Ot Llc, a provider established in Portland, Oregon operating as a Clinic/center. The healthcare provider is registered in the NPI registry with number 1134090343 assigned on September 2025. The practitioner's primary taxonomy code is 261Q00000X. 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 Margaret Armstrong Otd, Otr/l (Occupational Therapist)

NPI
1134090343
Provider Name
MAGGIE ARMSTRONG OT LLC
Entity Type
Organization
Location Address
9406 N SYRACUSE ST PORTLAND, OR 97203
Location Phone
(770) 363-7438
Mailing Address
5441 S MACADA AVE PORTLAND, OR 97239
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
09-12-2025
Last Update Date
09-12-2025
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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

Taxonomy Code
261Q00000X
Type
Ambulatory Health Care Facilities
Taxonomy Description
A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).

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)
1225X00000XRespiratory, Developmental, Rehabilitative and Restorative Service Providers

Occupational Therapist

 

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

MARGARET ARMSTRONG OTD, OTR/L

Authorized Official Title
OCCUPATIONAL THERAPIST
Authorized Official Phone
(770) 363-7438

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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 1134090343, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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
1
Unchanged
Pos 3
3
Doubled → 6
Pos 4
4
Unchanged
Pos 5
0
Doubled → 0
Pos 6
9
Unchanged
Pos 7
0
Doubled → 0
Pos 8
3
Unchanged
Pos 9
4
Doubled → 8
Check
3
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 3 → 6 0 → 0 0 → 0 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 6 + 4 + 0 + 9 + 0 + 3 + 8 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1134090343.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1134090343, enumerated as an "organization" on September 12, 2025.

The provider is located at 9406 N SYRACUSE ST PORTLAND, OR 97203 and the phone number is (770) 363-7438.

Clinic/Center with taxonomy code 261Q00000X.