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GREGORY R JOHNSON MD
NPI 1629179494
Internal Medicine in Amarillo, TX

Active since September 26, 2006PECOS Enrolled
1301 S COULTER ST, SUITE 405, AMARILLO, TX 79106(806) 358-9111(806) 358-3728 Get Directions Write a Review

NPPES record last updated: October 20, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Gregory R Johnson Md NPPES

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

GREGORY R JOHNSON MD (NPI 1629179494) is an individual internal medicine provider in Amarillo, Texas, licensed in Texas (L5781) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1629179494
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGREGORY R JOHNSONCredential: MD
Location Address1301 S COULTER ST, SUITE 405Amarillo, TX 79106-1763
Mailing Address1301 S Coulter St, Suite 405Amarillo, TX 79106-1763 · (806) 358-9111 · Fax (806) 358-3728
Phone(806) 358-9111
Fax(806) 358-3728
Sole ProprietorNo
Enumeration DateSeptember 26, 2006
Last NPPES UpdateOctober 20, 2008
✔ NPI 1629179494 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TX · L5781
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1301 S COULTER ST, Amarillo, TX 79106
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Other Identifiers 3

Medicare PIN8F4494TX
Medicare UPINH80125TX
Medicaid157811401TX

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gregory R Johnson Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Gregory Johnson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cogent Healthcare Of Jacksonville, LLC
1,223 mi
Internal Medicine
655 W 8TH ST
Jacksonville, FL 32209
  • Reassigned Medicare billing, Florida enrollment
  • 440 clinicians in this Medicare group
NPI 1124252333 (904) 244-3850

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 79106 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
$126.40 typical visit price
range $54.84 – $166.88
Typical copayment $31.60 (range $13.71 – $41.72)
Most-billed visit code 99204
Established Patient
$97.05 typical visit price
range $17.52 – $136.11
Typical copayment $24.26 (range $4.38 – $34.02)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 19

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

MRS. KAREN ASHLEY HUBBARD MSN, FNP
Nurse Practitioner (Family)
1301 S COULTER ST, STE. 104
AMARILLO, TX 79106
Potter County (806) 354-4900
MS. CHRISTIE C HERNANDEZ RN WHCNP BC
Registered Nurse
1301 S COULTER ST, SUITE 300
AMARILLO, TX 79106
Potter County (806) 355-6330
AMANDA DAWN MURDOCK M.D
Obstetrics & Gynecology
1301 S COULTER ST, SUITE 300
AMARILLO, TX 79106
Potter County (806) 355-6330
ABDUL RAUF ZAHID M.D
Family Medicine
1301 S COULTER ST, SUITE 405
AMARILLO, TX 79106
Potter County (806) 358-9111
DR. ANN E HARRAL M.D.
Obstetrics & Gynecology
1301 S COULTER ST, SUITE 300
AMARILLO, TX 79106
Potter County (806) 355-6330
DR. CHAMINDA FERNANDO D.O.
Internal Medicine
1301 S COULTER ST, SUITE 405
AMARILLO, TX 79106
Potter County (806) 358-9111
PIPER E LOCKETT PA-C
Physician Assistant
1301 S COULTER ST, SUITE 413
AMARILLO, TX 79106
Potter County (806) 677-7953
AMARILLO CENTER FOR CANCER AND BLOOD DISORDERS
Internal Medicine (Hematology & Oncology)
1301 S COULTER ST, #205
AMARILLO, TX 79106
Potter County (806) 353-8555

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 1629179494. It was assigned to this individual provider in the NPPES registry on September 26, 2006.

Where is Gregory Johnson located?

Gregory Johnson practices at 1301 S Coulter St Suite 405, Amarillo, TX 79106. The listed phone number is (806) 358-9111.

What is Gregory Johnson's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gregory Johnson enrolled in Medicare?

Yes. Gregory Johnson is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gregory Johnson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Johnson reassigns Medicare benefits to Cogent Healthcare Of Jacksonville, LLC (Jacksonville, FL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Johnson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Gregory Johnson was last updated on October 20, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.