DR. COLBY T CHASTAIN M.D.
NPI 1922056217
Radiology - Diagnostic Radiology in Gainesville, GA

Active since May 05, 2006PECOS EnrolledAccepts Medicare Assignment
75/100
CMS Quality Rating
200 W ACADEMY STREET, GAINESVILLE, GA 30501(770) 282-8820 Get Directions Write a Review

NPPES record last updated: September 23, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

About Dr. Colby T Chastain M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. COLBY T CHASTAIN M.D. (NPI 1922056217) is an individual diagnostic radiology provider in Gainesville, Georgia, licensed in Georgia (047968) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Northeast Georgia Medical Center, Inc, and maintains 5 additional practice locations.

NPPES Registry Identity

NPI1922056217
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameDR. COLBY T CHASTAINCredential: M.D.
Location Address200 W ACADEMY STREETGainesville, GA 30501
Mailing AddressPo Box 2417Gainesville, GA 30503-2417 · (770) 532-9936 · Fax (770) 534-9877
Sole ProprietorNo
Medical School CMSMedical College Of Georgia School Of MedicineGraduated 1998
Enumeration DateMay 5, 2006
Last NPPES UpdateSeptember 23, 2025
NPPES CertifiedSeptember 23, 2025
NPI 1922056217 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
License Licensed in GA · 047968
Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

200 W ACADEMY STREET, Gainesville, GA 30501

Secondary Practice Locations 5

Location 1725 Jesse Jewell Pkwy SEGAINESVILLE, GA 30501-3834 · Phone (770) 718-1122
Location 2835 Austin DrDemorest, GA 30535-4513 · Phone (770) 718-1122
Location 3801 Austin DrDemorest, GA 30535-4513 · Phone (770) 718-1122
Location 41270 Friendship RdBraselton, GA 30517-5630 · Phone (770) 718-1122
Location 5655 Jesse Jewell Pkwy SEGainesville, GA 30501-3756 · Phone (770) 718-1122

Other Identifiers 4

Medicaid526093704BGA
Medicaid526093704EGA
Other581177261AGA · Medicare Grp Prov #
OtherP00157893GA · Railroad Medicare

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Dr. Colby T Chastain M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6103727219
PECOS Enrollment IDI20040624000500
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 77

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

X-ray of chest, 1 view 71045
A chest X-ray, 1 view, is a quick, painless test that produces images of the structures within your chest, such as your heart, lungs, and blood vessels. It helps in diagnosing conditions like pneumonia, heart problems, or lung cancer. You'll stand in front of a machine that emits X-rays, which pass through your body to create the image.
941 services836 patients
Ct scan head or brain without contrast 70450
A CT scan of the head or brain without contrast is a non-invasive imaging procedure. It uses X-rays to create detailed pictures of your brain, skull, and other structures inside your head. It helps to detect conditions like strokes, tumors, or injuries. No dye (contrast) is used in this test.
305 services298 patients
Ct scan of abdomen and pelvis with contrast 74177
A CT scan of the abdomen and pelvis with contrast is an imaging procedure. A special dye, called contrast, is used to make certain areas more visible. This can help identify issues such as infections, tumors, or other abnormalities. The procedure is painless and usually takes about 30 minutes.
248 services241 patients
Ct scan of abdomen and pelvis without contrast 74176
A CT scan of the abdomen and pelvis is a non-invasive medical test. It uses special X-ray equipment to create detailed images of your abdominal and pelvic areas. This helps doctors examine organs, tissues, and vessels. No contrast dye is used in this procedure.
208 services204 patients
Mri scan of lower spinal canal without contrast 72148
An MRI scan of the lower spinal canal without contrast is a non-invasive imaging test. It uses a magnetic field and radio waves to produce detailed images of your lower spine. This helps identify issues like disc problems, tumors, or nerve conditions. No dye is used.
177 services176 patients
Ct scan of upper spine without contrast 72125
A CT scan of the upper spine without contrast is a non-invasive imaging test that uses X-rays to capture detailed images of your neck and upper back. It helps in identifying issues like fractures, tumors, or infections. No dye (contrast) is used in this scan.
148 services145 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northeast Georgia Medical Center, Inc

Acute Care Hospitals · Gainesville, GA
3/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number110029
Location743 Spring StreetGainesville, GA 30501 · Hall County
Emergency services Birthing friendly

Ngmc Barrow, LLC

Acute Care Hospitals · Winder, GA
OwnershipProprietary
CMS Certification Number110045
Location316 North Broad StreetWinder, GA 30680 · Barrow County
Emergency services

Union General Hospital

Acute Care Hospitals · Blairsville, GA
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number110051
Location35 Hospital RoadBlairsville, GA 30512 · Union County
Emergency services Birthing friendly

Northside Hospital

Acute Care Hospitals · Atlanta, GA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number110161
Location1000 Johnson Ferry Road, NEAtlanta, GA 30342 · Fulton County
Birthing friendly

Northeast Georgia Medical Center Lumpkin

Acute Care Hospitals · Dahlonega, GA
OwnershipVoluntary non-profit - Other
CMS Certification Number110237
Location495 Highway 400 NorthDahlonega, GA 30533 · Lumpkin County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 30501 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$83.23 typical visit price
range $53.31 – $164.04
Typical copayment $20.80 (range $13.32 – $41.01)
Most-billed visit code 99203
Established Patient
$66.89 typical visit price
range $16.68 – $133.24
Typical copayment $16.72 (range $4.17 – $33.31)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

75/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Individually scored

Reported Quality Measures

Appropriate Follow-up Imaging for Incidental Abdominal Lesions
Percentage of final reports for abdominal imaging studies for asymptomatic patients aged 18 years and older with one or more of the following noted incidentally with follow_up imaging recommended: - Liver lesion =< 0.5 cm - Cystic kidney lesion < 1.0 cm -…
Lower rates are better for this measure.
0%167 patients
Nuclear Medicine: Correlation with Existing Imaging Studies for All Patients Undergoing Bone Scintigraphy
Percentage of final reports for all patients, regardless of age, undergoing bone scintigraphy that include physician documentation of correlation with existing relevant imaging studies (e.g., x-ray, MRI, CT, etc.) that were performed
74%50 patients
Radiation Consideration for Adult CT: Utilization of Dose Lowering Techniques
Percentage of final reports for patients aged 18 years and older undergoing CT with documentation that one or more of the following dose reduction techniques were used: - Automated exposure control - Adjustment of the mA and/or kV according to patient size -…
99%1,720 patients
Radiology: Reminder System for Screening Mammograms
Percentage of patients undergoing a screening mammogram whose information is entered into a reminder system with a target due date for the next mammogram
100%173 patients
Radiology: Stenosis Measurement in Carotid Imaging Reports
Percentage of final reports for carotid imaging studies (neck magnetic resonance angiography [MRA], neck computed tomography angiography [CTA], neck duplex ultrasound, carotid angiogram) performed that include direct or indirect reference to measurements of…
93%116 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501
Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501
Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501
Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501
Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501
Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501
Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501
Radiology (Diagnostic Radiology)
200 W ACADEMY STREET
GAINESVILLE, GA 30501

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Colby Chastain's NPI number?

The NPI number for Colby Chastain is 1922056217. It was assigned to this individual provider in the NPPES registry on May 5, 2006.

Where is Colby Chastain located?

Colby Chastain practices at 200 W Academy Street, Gainesville, GA 30501. The listed phone number is (770) 282-8820.

What is Colby Chastain's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Colby Chastain enrolled in Medicare?

Yes. Colby Chastain is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Colby Chastain accept?

Health plans from Alliant Health Plans, Inc. list Colby Chastain as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Colby Chastain affiliated with any hospitals?

According to CMS data, Colby Chastain is affiliated with Northeast Georgia Medical Center, Inc, Ngmc Barrow, LLC, Union General Hospital, Northside Hospital and Northeast Georgia Medical Center Lumpkin.

When was this NPI record last updated?

The NPPES record for Colby Chastain was last updated on September 23, 2025. NPI Profile syncs with the weekly NPPES data releases published by CMS.