DR. MARY CLAIRE MCMILLAN DO
NPI 1033812664
Family Medicine in Port St Lucie, FL
About Dr. Mary Claire Mcmillan Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARY CLAIRE MCMILLAN DO (NPI 1033812664) is an individual family medicine provider in Port St Lucie, Florida, licensed in Florida (OS23663) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS, is affiliated with St Lucie Medical Center, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Mary Claire Mcmillan Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Mcmillan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Port St Lucie, FL 34952
- Reassigned Medicare billing, Florida enrollment
- 53 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Lucie Medical Center
Acute Care Hospitals · Port Saint Lucie, FLPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 34952 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
PORT ST LUCIE, FL 34952
PORT ST LUCIE, FL 34952
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 Mary Mcmillan's NPI number?
The NPI number for Mary Mcmillan is 1033812664. It was assigned to this individual provider in the NPPES registry on March 23, 2023.
Where is Mary Mcmillan located?
Mary Mcmillan practices at 1800 SE Tiffany Ave, Port St Lucie, FL 34952. The listed phone number is (772) 398-3623.
What is Mary Mcmillan's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Mary Mcmillan enrolled in Medicare?
Yes. Mary Mcmillan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Mcmillan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Mcmillan reassigns Medicare benefits to St Lucie Medical Specialists LLC (Port St Lucie, 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 Mary Mcmillan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Mcmillan accept?
Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Ambetter of Alabama, AvMed and Florida Blue (BlueCross BlueShield FL) and 3 other insurers list Mary Mcmillan 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 Mary Mcmillan affiliated with any hospitals?
According to CMS data, Mary Mcmillan is affiliated with St Lucie Medical Center.
When was this NPI record last updated?
The NPPES record for Mary Mcmillan was last updated on June 13, 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.
# Dr. Mary Claire Mcmillan, DO · NPI 1033812664
Family Medicine physician in Port St Lucie, Florida. Individual provider, active in the CMS NPPES registry since March 23, 2023.
## Identity
- **NPI:** 1033812664 (Entity type: Individual)
- **Enumerated:** March 23, 2023
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** OS23663 (Florida)
- **Sole proprietor:** No
## Practice location
- **Address:** 1800 SE TIFFANY AVE, Port St Lucie, FL 34952-7521
- **Phone:** (772) 398-3623
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** St Lucie Medical Specialists LLC (NPI 1548447535, Port St Lucie, FL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** June 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1033812664) · Data from the CMS NPPES public registry.