DR. CHADWICK BURTON GAGE MD
NPI 1639014483
Student in an Organized Health Care Education/Training Program in Johnson City, TN

NPI Status: Active since April 20, 2026

Contact Information

325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN
ZIP 37604
Phone: (423) 439-7320
Fax: (423) 439-7343

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  • Individual
  • Male
  • Student in an Organized Health Care Educ...

About CHADWICK GAGE

This page provides the complete NPI Profile along with additional information for Chadwick Gage, a primary care provider established in Johnson City, Tennessee with a medical specialization in Student In An Organized Health Care Education/training Program. The healthcare provider is registered in the NPI registry with number 1639014483 assigned on April 2026. The practitioner's primary taxonomy code is 390200000X. The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1639014483
Provider Name
DR. CHADWICK BURTON GAGE MD
Gender
Male
Entity Type
Individual
Location Address
325 N STATE OF FRANKLIN RD JOHNSON CITY, TN 37604
Location Phone
(423) 439-7320
Location Fax
(423) 439-7343
Mailing Address
325 N STATE OF FRANKLIN RD JOHNSON CITY, TN 37604
Mailing Phone
(423) 439-7320
Mailing Fax
(423) 439-7343
Is Sole Proprietor?
No
Enumeration Date
04-20-2026
Last Update Date
04-20-2026
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A primary care provider (PCP) like Chadwick Gage 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 .

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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

Student in an Organized Health Care Education/Training Program

Taxonomy Code
390200000X
Type
Student, Health Care
Taxonomy Description
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

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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 1639014483, 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
6
Unchanged
Pos 3
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
0
Doubled → 0
Pos 6
1
Unchanged
Pos 7
4
Doubled → 8
Pos 8
4
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 3 → 6 0 → 0 4 → 8 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 0 + 1 + 8 + 4 + 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 1639014483.

Other Providers at the Same Location


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

Pediatrics (Pediatric Cardiology)
325 N STATE OF FRANKLIN RD, GROUND FLOOR
JOHNSON CITY, TN 37604
Surgery
325 N STATE OF FRANKLIN RD, 3RD FLOOR
JOHNSON CITY, TN 37604
Internal Medicine
325 N STATE OF FRANKLIN RD, 1ST FLOOR
JOHNSON CITY, TN 37604
Pediatrics
325 N STATE OF FRANKLIN RD, GROUND FLOOR
JOHNSON CITY, TN 37604
Pediatrics (Adolescent Medicine)
325 N STATE OF FRANKLIN RD, GROUND FLOOR
JOHNSON CITY, TN 37604
Ophthalmology
325 N STATE OF FRANKLIN RD, 3RD FLOOR
JOHNSON CITY, TN 37604
Internal Medicine (Endocrinology, Diabetes & Metabolism)
325 N STATE OF FRANKLIN RD, 2ND FLOOR
JOHNSON CITY, TN 37604
Pediatrics (Pediatric Hematology-Oncology)
325 N STATE OF FRANKLIN RD, GROUND FLOOR
JOHNSON CITY, TN 37604
Obstetrics & Gynecology
325 N STATE OF FRANKLIN RD, 1ST FLOOR
JOHNSON CITY, TN 37604
Internal Medicine
325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Pathology (Anatomic Pathology & Clinical Pathology)
325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Obstetrics & Gynecology (Maternal & Fetal Medicine)
325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Internal Medicine
325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Surgery (Pediatric Surgery)
325 N STATE OF FRANKLIN RD, THIRD FLOOR
JOHNSON CITY, TN 37604
Internal Medicine (Rheumatology)
325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Orthopaedic Surgery
325 N STATE OF FRANKLIN RD, 3RD FLOOR
JOHNSON CITY, TN 37604
Dietitian, Registered
325 N STATE OF FRANKLIN RD, 2ND FLOOR
JOHNSON CITY, TN 37604
Internal Medicine
325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Pathology (Clinical Laboratory Director, Non-physician)
325 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Internal Medicine (Allergy & Immunology)
325 N STATE OF FRANKLIN RD, 2ND FLOOR
JOHNSON CITY, TN 37604

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639014483, enumerated as an "individual" on April 20, 2026.

The provider is located at 325 N STATE OF FRANKLIN RD JOHNSON CITY, TN 37604 and the phone number is (423) 439-7320.

Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.