MICHAEL JOHN FEIFAREK MD
NPI 1144296294
Ophthalmology in Madison, WI

NPI Status: Active since February 28, 2006

Contact Information

2880 UNIVERSITY AVE
MADISON, WI
ZIP 53705
Phone: (608) 263-7171
Fax: (608) 265-8060

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  • Individual
  • Male
  • Ophthalmology

About MICHAEL FEIFAREK

This page provides the complete NPI Profile along with additional information for Michael Feifarek, a provider established in Madison, Wisconsin with a medical specialization in Ophthalmology. The healthcare provider is registered in the NPI registry with number 1144296294 assigned on February 2006. The practitioner's primary taxonomy code is 207W00000X with license number 25251 (WI). The provider is registered as an individual and his NPI record was last updated 17 years ago.

NPI
1144296294
Provider Name
MICHAEL JOHN FEIFAREK MD
Gender
Male
Entity Type
Individual
Location Address
2880 UNIVERSITY AVE MADISON, WI 53705
Location Phone
(608) 263-7171
Location Fax
(608) 265-8060
Mailing Address
7974 UW HEALTH CT MIDDLETON, WI 53562
Mailing Phone
(608) 829-5485
Is Sole Proprietor?
No
Enumeration Date
02-28-2006
Last Update Date
02-05-2009
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Ophthalmologists like Michael Feifarek specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
25251
License State
WI
Taxonomy Description
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

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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 1144296294, 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
1
Unchanged
Pos 3
4
Doubled → 8
Pos 4
4
Unchanged
Pos 5
2
Doubled → 4
Pos 6
9
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
2
Unchanged
Pos 9
9
Doubled → 18 → 1 + 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 4 → 8 2 → 4 6 → 12 → 3 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 4 + 9 + 1 + 2 + 2 + 1 + 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 1144296294.

Other Providers at the Same Location


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

Ophthalmology
2880 UNIVERSITY AVE
MADISON, WI 53705
Ophthalmology
2880 UNIVERSITY AVE
MADISON, WI 53705
Pediatrics
2880 UNIVERSITY AVE
MADISON, WI 53705
Internal Medicine
2880 UNIVERSITY AVE
MADISON, WI 53705
Ophthalmology
2880 UNIVERSITY AVE
MADISON, WI 53705
Internal Medicine (Geriatric Medicine)
2880 UNIVERSITY AVE
MADISON, WI 53705
Ophthalmology
2880 UNIVERSITY AVE
MADISON, WI 53705
Pediatrics
2880 UNIVERSITY AVE
MADISON, WI 53705
Internal Medicine (Geriatric Medicine)
2880 UNIVERSITY AVE
MADISON, WI 53705
Internal Medicine (Geriatric Medicine)
2880 UNIVERSITY AVE
MADISON, WI 53705
Internal Medicine (Geriatric Medicine)
2880 UNIVERSITY AVE
MADISON, WI 53705
Internal Medicine (Geriatric Medicine)
2880 UNIVERSITY AVE
MADISON, WI 53705
Nurse Practitioner
2880 UNIVERSITY AVE
MADISON, WI 53705
Ophthalmology
2880 UNIVERSITY AVE
MADISON, WI 53705
Ophthalmology
2880 UNIVERSITY AVE
MADISON, WI 53705
Nurse Practitioner (Pediatrics)
2880 UNIVERSITY AVE
MADISON, WI 53705
Pediatrics
2880 UNIVERSITY AVE
MADISON, WI 53705
Optometrist (Corneal and Contact Management)
2880 UNIVERSITY AVE
MADISON, WI 53705
Pharmacist
2880 UNIVERSITY AVE, MC 9001
MADISON, WI 53705
Ophthalmology
2880 UNIVERSITY AVE
MADISON, WI 53705

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144296294, enumerated as an "individual" on February 28, 2006.

The provider is located at 2880 UNIVERSITY AVE MADISON, WI 53705 and the phone number is (608) 263-7171.

Ophthalmology with taxonomy code 207W00000X.