KATIE GREICAR O.T.R./C.H.T.
NPI 1770517633
Occupational Therapist - Hand in Duluth, MN

NPI Status: Active since July 10, 2006

Contact Information

402 E 2ND ST
DULUTH, MN
ZIP 55805
Phone: (218) 786-5410

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  • Individual
  • Female
  • Occupational Therapist
  • Hand
  • Accepts Insurance

About KATIE GREICAR

This page provides the complete NPI Profile along with additional information for Katie Greicar, a provider established in Duluth, Minnesota with a medical specialization in Occupational Therapist, focusing in hand . The healthcare provider is registered in the NPI registry with number 1770517633 assigned on July 2006. The practitioner's primary taxonomy code is 225XH1200X with license number 102957 (MN). The provider is registered as an individual and her NPI record was last updated February 2026.

NPI
1770517633
Provider Name
KATIE GREICAR O.T.R./C.H.T.
Other Name
KATIE ERICKSON
Other Name Type
Former Name (1)
Gender
Female
Entity Type
Individual
Location Address
402 E 2ND ST DULUTH, MN 55805
Location Phone
(218) 786-5410
Mailing Address
402 E 2ND ST DULUTH, MN 55805
Is Sole Proprietor?
No
Enumeration Date
07-10-2006
Last Update Date
02-10-2026
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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

Occupational Therapist Hand

Taxonomy Code
225XH1200X
Type
Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.
102957
License State
MN

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

102957 (MN)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Essentia Choice Care with Medica Bronze $0 Copay PCP Visits - HMO
  • Essentia Choice Care with Medica Bronze Share - HMO
  • Essentia Choice Care with Medica Expanded Bronze Standard - HMO
  • Essentia Choice Care with Medica Gold $0 Copay PCP Visits - HMO
  • Essentia Choice Care with Medica Gold Share - HMO
  • Essentia Choice Care with Medica Gold Standard - HMO
  • Essentia Choice Care with Medica Silver $0 Copay PCP Visits - HMO
  • Essentia Choice Care with Medica Silver Share - HMO
  • Essentia Choice Care with Medica Silver Standard - HMO
  • Medica Individual Choice Bronze $0 Copay PCP Visits - HMO
  • Medica Individual Choice Bronze HSA - EPO
  • Medica Individual Choice Bronze Share - EPO
  • Medica Individual Choice Bronze Share - HMO
  • Medica Individual Choice Expanded Bronze Standard - EPO
  • Medica Individual Choice Expanded Bronze Standard - HMO
  • Medica Individual Choice Gold $0 Copay PCP Visits - EPO
  • Medica Individual Choice Gold $0 Copay PCP Visits - HMO
  • Medica Individual Choice Gold Share - EPO
  • Medica Individual Choice Gold Share - HMO
  • Medica Individual Choice Gold Standard - EPO
  • Sanford Individual Simplicity $1,750 - PPO
  • Sanford Individual Simplicity $10,600 - PPO
  • Sanford Individual Simplicity $3,500 - PPO
  • Sanford Individual Simplicity $4,750 - PPO
  • Sanford Individual Simplicity $6,500 - PPO
  • Sanford Individual Simplicity $7,200 HSA Qualified - PPO
  • Sanford Individual Simplicity Standardized $2,000 - PPO
  • Sanford Individual Simplicity Standardized $6,000 - PPO
  • Sanford Individual Simplicity Standardized $7,500 - PPO

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Reviews for KATIE GREICAR O.T.R./C.H.T.

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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 1770517633, 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
7
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
0
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
1
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
6
Unchanged
Pos 9
3
Doubled → 6
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 7 → 14 → 5 5 → 10 → 1 7 → 14 → 5 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 1 + 4 + 0 + 1 + 0 + 1 + 1 + 4 + 6 + 6 + 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 1770517633.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Specialist/Technologist (Athletic Trainer)
402 E 2ND ST, DULUTH CLINIC - SPORTS MEDICINE
DULUTH, MN 55805
Specialist/Technologist (Athletic Trainer)
402 E 2ND ST, DULUTH CLINIC SPORTS MEDICINE
DULUTH, MN 55805
Specialist/Technologist (Athletic Trainer)
402 E 2ND ST
DULUTH, MN 55805
Emergency Medicine
402 E 2ND ST
DULUTH, MN 55805
Speech-Language Pathologist
402 E 2ND ST
DULUTH, MN 55805
Physician Assistant
402 E 2ND ST
DULUTH, MN 55805
Physical Therapist
402 E 2ND ST
DULUTH, MN 55805
Physical Therapist
402 E 2ND ST
DULUTH, MN 55805
Nurse Anesthetist, Certified Registered
402 E 2ND ST
DULUTH, MN 55805
Clinical Nurse Specialist
402 E 2ND ST
DULUTH, MN 55805
Emergency Medicine
402 E 2ND ST
DULUTH, MN 55805
Nurse Practitioner
402 E 2ND ST
DULUTH, MN 55805
Nurse Practitioner (Family)
402 E 2ND ST
DULUTH, MN 55805
Internal Medicine
402 E 2ND ST
DULUTH, MN 55805
General Acute Care Hospital
402 E 2ND ST
DULUTH, MN 55805
Physician Assistant
402 E 2ND ST
DULUTH, MN 55805
Physician Assistant
402 E 2ND ST
DULUTH, MN 55805
Emergency Medicine
402 E 2ND ST
DULUTH, MN 55805
Hospitalist
402 E 2ND ST
DULUTH, MN 55805
Physician Assistant
402 E 2ND ST
DULUTH, MN 55805

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1770517633, enumerated as an "individual" on July 10, 2006.

The provider is located at 402 E 2ND ST DULUTH, MN 55805 and the phone number is (218) 786-5410.

Occupational Therapist with taxonomy code 225XH1200X and a focus in Hand.

The provider might be accepting Accepts: Medica and Sanford Health Plan. Please consult your insurance carrier or call the provider to verify.