1. Home
  2. Directory
  3. Arizona
  4. San Tan Valley
  5. Family Medicine
  6. NPI Profile

GARY SMITHSON DO
NPI 1891483731
Family Medicine in San Tan Valley, AZ

Active since April 27, 2023PECOS EnrolledAccepts Medicare Assignment
36543 N GANTZEL RD STE 102, SAN TAN VALLEY, AZ 85140(480) 401-1811 Get Directions Write a Review

NPPES record last updated: May 12, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 12, 2026, Mar 3, 2025, May 15, 2023 (3 updates tracked since 2023).

About Gary Smithson Do NPPES

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

GARY SMITHSON DO (NPI 1891483731) is an individual family medicine provider in San Tan Valley, Arizona, licensed in Arizona (011342) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS and is a graduate of Other (2023).

NPPES Registry Identity

NPI1891483731
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameGARY SMITHSONCredential: DO
Location Address36543 N GANTZEL RD STE 102San Tan Valley, AZ 85140-7347
Mailing Address2090 E Linda LnGilbert, AZ 85234-6210 · (480) 737-8510
Phone(480) 401-1811
Sole ProprietorNo
Medical School CMSOtherGraduated 2023
Enumeration DateApril 27, 2023
Last NPPES UpdateMay 12, 20263 updates tracked since enumeration
NPPES CertifiedMay 12, 2026
✔ NPI 1891483731 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in AZ · 011342
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
36543 N GANTZEL RD STE 102, San Tan Valley, AZ 85140
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gary Smithson Do 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 ID4284161894
PECOS Enrollment IDI20241220001061
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 Gary Smithson reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Access Wellness Resources
826 mi
Family Medicine
2720 WESTERN CENTER BLVD STE 312
Fort Worth, TX 76131
  • Reassigned Medicare billing, Arizona enrollment
  • 30 clinicians in this Medicare group
NPI 1568116291 (682) 250-3018

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 85140 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
$85.89 typical visit price
range $55.44 – $168.60
Typical copayment $21.47 (range $13.86 – $42.15)
Most-billed visit code 99203
Established Patient
$98.00 typical visit price
range $17.72 – $137.41
Typical copayment $24.50 (range $4.43 – $34.35)
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.

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 Gary Smithson's NPI number?

The NPI number for Gary Smithson is 1891483731. It was assigned to this individual provider in the NPPES registry on April 27, 2023.

Where is Gary Smithson located?

Gary Smithson practices at 36543 N Gantzel Rd Ste 102, San Tan Valley, AZ 85140. The listed phone number is (480) 401-1811.

What is Gary Smithson's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Gary Smithson enrolled in Medicare?

Yes. Gary Smithson 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.

Which organization bills Medicare for Gary Smithson's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Smithson reassigns Medicare benefits to Access Wellness Resources (Fort Worth, TX). 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 Gary Smithson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gary Smithson accept?

Health plans from UnitedHealthcare list Gary Smithson 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.

When was this NPI record last updated?

The NPPES record for Gary Smithson was last updated on May 12, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.