DR. TIMOTHY TAN M.D
NPI 1851348783
Family Medicine in Chicago, IL

NPI Status: Active since May 27, 2006

Contact Information

4947 N WINTHROP AVE
CHICAGO, IL
ZIP 60640
Phone: (773) 989-9118

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  • Individual
  • Male
  • Family Medicine

About TIMOTHY TAN

This page provides the complete NPI Profile along with additional information for Timothy Tan, a primary care provider established in Chicago, Illinois with a medical specialization in Family Medicine. The healthcare provider is registered in the NPI registry with number 1851348783 assigned on May 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
1851348783
Provider Name
DR. TIMOTHY TAN M.D
Gender
Male
Entity Type
Individual
Location Address
4947 N WINTHROP AVE CHICAGO, IL 60640
Location Phone
(773) 989-9118
Mailing Address
766 CAMELOT DR BURR RIDGE, IL 60527
Is Sole Proprietor?
Yes
Enumeration Date
05-27-2006
Last Update Date
07-08-2007
Code Navigator

A primary care provider (PCP) like Timothy Tan 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 1851348783, we treat the final digit (3) 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 67. The final step is to find the difference between that total and the next multiple of ten (70 - 67 = 3).

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
8
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
1
Unchanged
Pos 5
3
Doubled → 6
Pos 6
4
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
7
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
3
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 5 → 10 → 1 3 → 6 8 → 16 → 7 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 0 + 1 + 6 + 4 + 1 + 6 + 7 + 1 + 6 + 24 = 67

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

The next multiple of ten after 67 is 70. The difference is the calculated check digit.

70 - 67 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1851348783.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Family Medicine
4947 N WINTHROP AVE
CHICAGO, IL 60640
Respiratory Therapist, Certified (Pulmonary Diagnostics)
4947 N WINTHROP AVE
CHICAGO, IL 60640
Family Medicine
4947 N WINTHROP AVE, ARGYLE WINTHROP MEDICAL CENTER
CHICAGO, IL 60640
Nurse Practitioner (Family)
4947 N WINTHROP AVE
CHICAGO, IL 60640

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1851348783, enumerated as an "individual" on May 27, 2006.

The provider is located at 4947 N WINTHROP AVE CHICAGO, IL 60640 and the phone number is (773) 989-9118.

Family Medicine with taxonomy code 207Q00000X.