GREGORY LLOYD JOHNSON MD
NPI 1326025057
Radiology - Diagnostic Radiology in Dallas, TX

Active since December 23, 2005PECOS EnrolledAccepts Medicare Assignment
2825 OAK LAWN AVE UNIT 192749, DALLAS, TX 75219(844) 389-5711(877) 880-2039 Get Directions Write a Review

NPPES record last updated: April 23, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Apr 23, 2026, Nov 19, 2024, Sep 10, 2024 and 8 more (11 updates tracked since 2017).

About Gregory Lloyd Johnson Md NPPES

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

GREGORY LLOYD JOHNSON MD (NPI 1326025057) is an individual diagnostic radiology provider in Dallas, Texas, licensed in Washington (MD00044283) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Northshore University Healthsystem - Evanston Hospital, and is a graduate of State University Of New York Downstate Medical Center (1994).

NPPES Registry Identity

NPI1326025057
Entity TypeIndividualMale
Primary Taxonomy2085R0202X
Provider Legal NameGREGORY LLOYD JOHNSONCredential: MD
Location Address2825 OAK LAWN AVE UNIT 192749Dallas, TX 75219-4688
Mailing Address2825 Oak Lawn Ave Unit 192749Dallas, TX 75219-4688 · (510) 683-9500 · Fax (877) 880-2039
Fax(877) 880-2039
Sole ProprietorNo
Medical School CMSState University Of New York Downstate Medical CenterGraduated 1994
Enumeration DateDecember 23, 2005
Last NPPES UpdateApril 23, 202611 updates tracked since enumeration
NPPES CertifiedApril 23, 2026
NPI 1326025057 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians
Taxonomy Code2085R0202X
Licenses Licensed in WA · MD00044283 Licensed in GA · 059314 Licensed in NC · 2005-01647 Licensed in OH · 35.137915 Licensed in CT · 66469 Licensed in KY · 54635 Licensed in TX · Q9645
Definition
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
2825 OAK LAWN AVE UNIT 192749, Dallas, TX 75219

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

Gregory Lloyd Johnson Md 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 ID6507762499
PECOS Enrollment IDI20050427000625
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 5

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.

Ct scan of chest with contrast 71260
A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.
957 services793 patients
Ct scan of chest without contrast 71250
A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.
457 services435 patients
Ct scan of chest with contrast 71260
A CT scan of the chest with contrast is an imaging procedure. A special dye (contrast) is used to highlight specific areas in your body, providing clearer pictures of your chest. This helps in diagnosing conditions related to your lungs, heart, and other chest structures.
162 services143 patients
Ct scan of chest without contrast 71250
A CT scan of the chest without contrast is a non-invasive imaging procedure. It uses special X-ray equipment to produce detailed images of your chest area, including your lungs and heart. It can help diagnose conditions such as lung diseases or heart disorders. It doesn't involve any dyes or contrast agents.
113 services108 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.
15 services15 patients

Hospital Affiliations CMS Care Compare 2

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

Northshore University Healthsystem - Evanston Hospital

Acute Care Hospitals · Evanston, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number140010
Location2650 Ridge AveEvanston, IL 60201 · Cook County
Emergency services Birthing friendly

Ohio State University State Health System

Acute Care Hospitals · Columbus, OH
4/5 CMS rating
OwnershipGovernment - State
CMS Certification Number360085
Location410 West 10th AvenueColumbus, OH 43210 · Franklin County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 75219 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
$88.19 typical visit price
range $57.18 – $172.86
Typical copayment $22.04 (range $14.29 – $43.21)
Most-billed visit code 99203
Established Patient
$71.28 typical visit price
range $18.48 – $141.20
Typical copayment $17.82 (range $4.62 – $35.30)
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.

Reported Quality Measures

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 -…
100%54 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 20

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

Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219
Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219
Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219
Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219
Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219
Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219
Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219
Radiology (Diagnostic Radiology)
2825 OAK LAWN AVE UNIT 192749
DALLAS, TX 75219

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 Gregory Johnson's NPI number?

The NPI number for Gregory Johnson is 1326025057. It was assigned to this individual provider in the NPPES registry on December 23, 2005.

Where is Gregory Johnson located?

Gregory Johnson practices at 2825 Oak Lawn Ave Unit 192749, Dallas, TX 75219. The listed phone number is (844) 389-5711.

What is Gregory Johnson's specialty?

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

Is Gregory Johnson enrolled in Medicare?

Yes. Gregory Johnson 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 Gregory Johnson accept?

Health plans from Antidote Health Plan of Ohio, Inc., Blue Cross and Blue Shield of NC, Blue Cross and Blue Shield of Texas and CareSource list Gregory Johnson 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 Gregory Johnson affiliated with any hospitals?

According to CMS data, Gregory Johnson is affiliated with Northshore University Healthsystem - Evanston Hospital and Ohio State University State Health System.

When was this NPI record last updated?

The NPPES record for Gregory Johnson was last updated on April 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.