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MCKAYLA M DINWIDDIE MD
NPI 1194429290
Family Medicine in O Fallon, MO

Active since March 30, 2023PECOS Enrolled
2299 TECHNOLOGY DR STE 320, O FALLON, MO 63368(636) 695-0535(636) 695-0537 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 8, 2023, Mar 30, 2023 (2 updates tracked since 2023).

About Mckayla M Dinwiddie Md NPPES

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

MCKAYLA M DINWIDDIE MD (NPI 1194429290) is an individual family medicine provider in O Fallon, Missouri, licensed in Missouri (2026028283) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS and maintains a secondary practice location in La Crosse.

NPPES Registry Identity

NPI1194429290
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMCKAYLA M DINWIDDIECredential: MD
Location Address2299 TECHNOLOGY DR STE 320O Fallon, MO 63368-7341
Mailing AddressPo Box 959354Saint Louis, MO 63195-9354 · (636) 695-0535 · Fax (636) 695-0537
Phone(636) 695-0535
Fax(636) 695-0537
Sole ProprietorNo
Enumeration DateMarch 30, 2023
Last NPPES UpdateJune 30, 20262 updates tracked since enumeration
NPPES CertifiedJune 30, 2026
✔ NPI 1194429290 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in MO · 2026028283✔ Licensed in WI · 100277
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.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
2299 TECHNOLOGY DR STE 320, O Fallon, MO 63368
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Secondary Practice Location 1

Location 1800 West Ave SLA Crosse, WI 54601-8806 · Phone (608) 785-0940

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 (PECOS)

Mckayla M Dinwiddie 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 Mckayla Dinwiddie reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Physician Groups Lc
17 mi
Multi-Specialty
670 MASON RIDGE CENTER DR STE 300
Saint Louis, MO 63141
  • Reassigned Medicare billing, Missouri enrollment
  • 611 clinicians in this Medicare group
NPI 1285664268 (314) 996-7644

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 63368 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
$86.32 typical visit price
range $55.65 – $169.38
Typical copayment $21.58 (range $13.91 – $42.34)
Most-billed visit code 99203
Established Patient
$98.37 typical visit price
range $17.76 – $137.92
Typical copayment $24.59 (range $4.44 – $34.48)
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 3

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

MRS. KAMI OWENBY FNP
Nurse Practitioner (Family)
2299 TECHNOLOGY DR STE 320
O FALLON, MO 63368
St. Charles County (636) 695-0535
EMMA MARIE GLOE MD
Family Medicine
2299 TECHNOLOGY DR STE 320
O FALLON, MO 63368
St. Charles County (636) 695-0535
LAURIE A GILTNER FNP
Nurse Practitioner
2299 TECHNOLOGY DR STE 320
O FALLON, MO 63368
St. Charles County (636) 695-0535

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 Mckayla Dinwiddie's NPI number?

The NPI number for Mckayla Dinwiddie is 1194429290. It was assigned to this individual provider in the NPPES registry on March 30, 2023.

Where is Mckayla Dinwiddie located?

Mckayla Dinwiddie practices at 2299 Technology Dr Ste 320, O Fallon, MO 63368. The listed phone number is (636) 695-0535.

What is Mckayla Dinwiddie's specialty?

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

Is Mckayla Dinwiddie enrolled in Medicare?

Yes. Mckayla Dinwiddie is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mckayla Dinwiddie's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mckayla Dinwiddie reassigns Medicare benefits to Physician Groups Lc (Saint Louis, MO). 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 Mckayla Dinwiddie's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mckayla Dinwiddie accept?

Health plans from UnitedHealthcare list Mckayla Dinwiddie 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 Mckayla Dinwiddie was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.