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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MASON GRANT JOHNSON MD
NPI 1871120105
Otolaryngology in Plant City, FL

Active since March 25, 2020PECOS Enrolled
511 W ALEXANDER ST STE 1, PLANT CITY, FL 33563(813) 733-8917 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 11, 2026, Mar 25, 2020 (2 updates tracked since 2020).

About Dr. Mason Grant Johnson Md NPPES

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

DR. MASON GRANT JOHNSON MD (NPI 1871120105) is an individual otolaryngology provider in Plant City, Florida, licensed in Florida (ME180608) and active in the NPI registry since March 2020. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1871120105
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameDR. MASON GRANT JOHNSONCredential: MD
Location Address511 W ALEXANDER ST STE 1Plant City, FL 33563-7116
Mailing Address545 Channelside Dr # A1608Tampa, FL 33602-5476 · (606) 213-3034
Phone(813) 733-8917
Sole ProprietorNo
Enumeration DateMarch 25, 2020
Last NPPES UpdateSeptember 11, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2026
✔ NPI 1871120105 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in FL · ME180608
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
511 W ALEXANDER ST STE 1, Plant City, FL 33563
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mason Grant 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33563 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
$130.04 typical visit price
range $56.00 – $171.84
Typical copayment $32.51 (range $14.00 – $42.96)
Most-billed visit code 99204
Established Patient
$70.04 typical visit price
range $17.57 – $139.16
Typical copayment $17.51 (range $4.39 – $34.79)
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.

Other Providers at the Same Location NPPES

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

KATHRYN L HALL M.D.
Otolaryngology (Otolaryngology/Facial Plastic Surgery)
511 W ALEXANDER ST STE 1
PLANT CITY, FL 33563
Hillsborough County (813) 879-8045

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 Mason Johnson's NPI number?

The NPI number for Mason Johnson is 1871120105. It was assigned to this individual provider in the NPPES registry on March 25, 2020.

Where is Mason Johnson located?

Mason Johnson practices at 511 W Alexander St Ste 1, Plant City, FL 33563. The listed phone number is (813) 733-8917.

What is Mason Johnson's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Mason Johnson enrolled in Medicare?

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

When was this NPI record last updated?

The NPPES record for Mason Johnson was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 days 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.