Quality Rating: 100 out of 100 score
NPI Status: Active since February 7, 2006
1400 Bellinger St
Eau Claire,
Post Code: 54703
Phone: (715) 838-5222
Fax: -
Gregory A Derfus Md is a Internal Medicine, Gastroenterology in Eau Claire, . Gregory A Derfus Md practices all healthcare services and medical treatments related to Internal Medicine, Gastroenterology. The NPI Number for Gregory A Derfus Md is 1861465304. The last update date is 2024-02-09.
Gregory A Derfus Md's current location address is 1400 Bellinger St, Eau Claire, . You can contact this provider via phone number (715) 838-5222 and fax number -. The mailing address for Gregory A Derfus Md is 1400 Bellinger St, Eau Claire, . To know further, please read the information below!
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.
The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.
| Identifier | Type / Code | Identifier State | Identifier Issuer |
|---|
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The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
| Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
| 1 | 8 | 6 | 1 | 4 | 6 | 5 | 3 | 0 | 4 |
| Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
| 2 | 8 | 12 | 1 | 8 | 6 | 10 | 3 | 0 | |
| Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. 28121861030 | |||||||||
| 2 + 8 + 1 + 2 + 1 + 8 + 6 + 1 + 0 + 3 + 0 + 24 = 56 | |||||||||
| Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
| 60 - 56 = 4 | 4 | ||||||||
The NPI number 1861465304 is valid because the calculated check digit 4 using the Luhn validation algorithm matches the last digit of the original NPI number.
The following 5 providers are registered at the same or nearby location.
| NPI | Name / Type | Taxonomy | Address |
|---|---|---|---|
| 1053314070 | GEORGE ANDREW BOUSH Individual |
Ophthalmology |
123 HOSPITAL DR WATERTOWN, Wisconsin (WI) 920-261-8225 |
| 1508869520 | KATHLEEN MARY HAASCH Individual |
Audiologist |
1442 N 31ST ST SHEBOYGAN, Wisconsin (WI) 920-458-3277 |
| 1245233287 | KRISTIE LYNN GERING Individual |
Family Medicine |
2829 COUNTY HIGHWAY I CHIPPEWA FALLS, Wisconsin (WI) 715-860-2300 |
| 1699778829 | CHIPPEWA VALLEY ORTHOPEDICS AND SPORTS MEDICINE CLINIC SC Organization |
Neurological Surgery |
1200 OAKLEAF WAY ALTOONA, Wisconsin (WI) 715-832-1400 |
| 1053314252 | HOSPICE ALLIANCE, INC. ALLIANCE HOMECARE Organization |
Home Health |
10220 PRAIRIE RIDGE BLVD PLEASANT PRAIRIE, Wisconsin (WI) 262-652-4400 |