MARLAINE EPSTEIN FNP
NPI 1922128644
Nurse Practitioner - Family in Benson, AZ

NPI Status: Active since March 29, 2007

Contact Information

890 W 4TH ST
BENSON, AZ
ZIP 85602
Phone: (520) 586-3664
Fax: (520) 586-3665

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  • Individual
  • Female
  • Nurse Practitioner
  • Family

About MARLAINE EPSTEIN

This page provides the complete NPI Profile along with additional information for Marlaine Epstein, a provider established in Benson, Arizona with a medical specialization in Nurse Practitioner, focusing in family . The healthcare provider is registered in the NPI registry with number 1922128644 assigned on March 2007. The practitioner's primary taxonomy code is 363LF0000X with license number RN126967 (AZ). The provider is registered as an individual and her NPI record was last updated June 2026.

NPI
1922128644
Provider Name
MARLAINE EPSTEIN FNP
Gender
Female
Entity Type
Individual
Location Address
890 W 4TH ST BENSON, AZ 85602
Location Phone
(520) 586-3664
Location Fax
(520) 586-3665
Mailing Address
890 W 4TH ST BENSON, AZ 85602
Mailing Phone
(520) 586-3664
Mailing Fax
(520) 586-3665
Is Sole Proprietor?
No
Enumeration Date
03-29-2007
Last Update Date
06-07-2026
Code Navigator

A nurse practitioner (NP) like Marlaine Epstein is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, etc.

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

Nurse Practitioner Family

Taxonomy Code
363LF0000X
Type
Physician Assistants & Advanced Practice Nursing Providers
License No.
RN126967
License State
AZ

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)
1363LA2200XPhysician Assistants & Advanced Practice Nursing Providers

Nurse Practitioner
Adult Health

RN126967 (FL)

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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 1922128644, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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
2
Doubled → 4
Pos 4
2
Unchanged
Pos 5
1
Doubled → 2
Pos 6
2
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
6
Unchanged
Pos 9
4
Doubled → 8
Check
4
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 1 → 2 8 → 16 → 7 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 4 + 2 + 2 + 2 + 1 + 6 + 6 + 8 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1922128644.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Family Medicine
890 W 4TH ST
BENSON, AZ 85602
Nurse Practitioner (Family)
890 W 4TH ST
BENSON, AZ 85602
Physician Assistant (Medical)
890 W 4TH ST
BENSON, AZ 85602
Nurse Practitioner (Family)
890 W 4TH ST
BENSON, AZ 85602
Internal Medicine
890 W 4TH ST
BENSON, AZ 85602
Family Medicine
890 W 4TH ST
BENSON, AZ 85602
Clinic/Center (Rural Health)
890 W 4TH ST
BENSON, AZ 85602
Family Medicine
890 W 4TH ST
BENSON, AZ 85602
Nurse Practitioner (Family)
890 W 4TH ST
BENSON, AZ 85602
Nurse Practitioner (Family)
890 W 4TH ST
BENSON, AZ 85602

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1922128644, enumerated as an "individual" on March 29, 2007.

The provider is located at 890 W 4TH ST BENSON, AZ 85602 and the phone number is (520) 586-3664.

Nurse Practitioner with taxonomy code 363LF0000X and a focus in Family.