MARGARET ELAINE KELLER RN
NPI 1134097009
Registered Nurse in Petoskey, MI

NPI Status: Active since October 23, 2025

Contact Information

704 EMMET ST
PETOSKEY, MI
ZIP 49770
Phone: (231) 347-5511
Fax: (231) 347-5422

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Registered Nurse

About MARGARET KELLER

This page provides the complete NPI Profile along with additional information for Margaret Keller, a provider established in Petoskey, Michigan with a medical specialization in Registered Nurse. The healthcare provider is registered in the NPI registry with number 1134097009 assigned on October 2025. The practitioner's primary taxonomy code is 163W00000X with license number 4704285018 (MI). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1134097009
Provider Name: MARGARET ELAINE KELLER RN
Gender: Female
Entity Type: Individual
Location Address: 704 EMMET ST PETOSKEY, MI 49770
Location Phone: (231) 347-5511
Location Fax: (231) 347-5422
Mailing Address: 704 EMMET ST PETOSKEY, MI 49770
Mailing Phone: (231) 347-5511
Mailing Fax: (231) 347-5422
Is Sole Proprietor?: No
Enumeration Date: 10-23-2025
Last Update Date: 10-23-2025
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A registered nurse (RN) like Margaret Keller coordinates and provides patient care and educates patients about various health conditions. Registered nurses give advice and emotional support to patients and their families. The typical duties of a registered nurse include: assessing patient conditions, record medical histories and symptoms, observe patients and record the observations, administer medicines and treatments, consult and collaborate with doctors, operate and monitor medical equipment, teach patients and families how to manage injuries or illnesses, etc.

Registered nurses typically work as part of a team with physicians and other healthcare professionals. In some medical teams registered nurses supervise nursing assistants, licensed practical nurses, and home health aides.

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: Registered Nurse
Taxonomy Code: 163W00000X
Type: Nursing Service Providers
License No.: 4704285018
License State: MI
Taxonomy Description: (1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span.

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 1134097009, 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 6

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 14 → 1 + 4

Pos 8

Unchanged

Pos 9

Doubled → 0

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 3 → 6 0 → 0 7 → 14 → 5 0 → 0

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 + 1 + 4 + 0 + 0 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9

This NPI is valid

The calculated check digit is 9, which matches the last digit of 1134097009.