DR. WILLIAM ROY WELDER M.D.
NPI 1679593214
Family Medicine in Great Lakes, IL

NPI Status: Active since July 19, 2006

Contact Information

3420 ILLINOIS ST
GREAT LAKES, IL
ZIP 60088
Phone: (847) 688-6755
Fax: (847) 688-2722

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  • Individual
  • Male
  • Family Medicine

About WILLIAM WELDER

This page provides the complete NPI Profile along with additional information for William Welder, a primary care provider established in Great Lakes, Illinois with a medical specialization in Family Medicine. The healthcare provider is registered in the NPI registry with number 1679593214 assigned on July 2006. The practitioner's primary taxonomy code is 207Q00000X. The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1679593214
Provider Name
DR. WILLIAM ROY WELDER M.D.
Gender
Male
Entity Type
Individual
Location Address
3420 ILLINOIS ST GREAT LAKES, IL 60088
Location Phone
(847) 688-6755
Location Fax
(847) 688-2722
Mailing Address
1277 QUEEN ANN LN GURNEE, IL 60031
Mailing Phone
(847) 688-6755
Mailing Fax
(847) 688-2722
Is Sole Proprietor?
Yes
Enumeration Date
07-19-2006
Last Update Date
07-08-2007
Code Navigator

A primary care provider (PCP) like William Welder sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, 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

Family Medicine

Taxonomy Code
207Q00000X
Type
Allopathic & Osteopathic Physicians
License State
IL
Taxonomy Description
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

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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 1679593214, 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
6
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
9
Unchanged
Pos 7
3
Doubled → 6
Pos 8
2
Unchanged
Pos 9
1
Doubled → 2
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 7 → 14 → 5 5 → 10 → 1 3 → 6 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 4 + 9 + 1 + 0 + 9 + 6 + 2 + 2 + 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 1679593214.

Other Providers at the Same Location


The following 18 providers are registered at the same or a nearby location.

Psychologist (Clinical)
3420 ILLINOIS ST, REU, BUILDING 1007
GREAT LAKES, IL 60088
Family Medicine (Sports Medicine)
3420 ILLINOIS ST, USS TRANQUILLITY - BMC 1007
GREAT LAKES, IL 60088
Psychologist (Clinical)
3420 ILLINOIS ST, RECRUIT MENTAL HEALTH, USS TRANQUILLITY
GREAT LAKES, IL 60088
Physician Assistant
3420 ILLINOIS ST, USS TRANQUILITY MEDICAL CLINIC 1007
GREAT LAKES, IL 60088
General Practice
3420 ILLINOIS ST
GREAT LAKES, IL 60088
Military Health Care Provider (Independent Duty Corpsman)
3420 ILLINOIS ST, BHC 1007
GREAT LAKES, IL 60088
Family Medicine
3420 ILLINOIS ST, USS TRANQUILLITY CLINIC 1007
GREAT LAKES, IL 60088
Physician Assistant (Medical)
3420 ILLINOIS ST
GREAT LAKES, IL 60088
Family Medicine
3420 ILLINOIS ST, USS TRANQUILITY MEDICAL CLINIC
GREAT LAKES, IL 60088
Military/U.S. Coast Guard Pharmacy
3420 ILLINOIS ST, AH14 MEDICAL CLINIC
GREAT LAKES, IL 60088
Military/U.S. Coast Guard Pharmacy
3420 ILLINOIS ST, USS TRANQUILITYAH14 MED CLN 1017
GREAT LAKES, IL 60088
Psychologist (Clinical)
3420 ILLINOIS ST
GREAT LAKES, IL 60088
Physical Therapist
3420 ILLINOIS ST
GREAT LAKES, IL 60088
Psychologist (Counseling)
3420 ILLINOIS ST
GREAT LAKES, IL 60088
Dental Hygienist
3420 ILLINOIS ST
NORTH CHICAGO, IL 60088
Family Medicine
3420 ILLINOIS ST
GREAT LAKES, IL 60088
Nurse Practitioner (Family)
3420 ILLINOIS ST
GREAT LAKES, IL 60088
Specialist/Technologist, Other
3420 ILLINOIS ST
GREAT LAKES, IL 60088

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1679593214, enumerated as an "individual" on July 19, 2006.

The provider is located at 3420 ILLINOIS ST GREAT LAKES, IL 60088 and the phone number is (847) 688-6755.

Family Medicine with taxonomy code 207Q00000X.