Quick answers
- Does Callie J. Mills accept Medicare assignment?
- Yes. Medicare's clinician data says Callie J. Mills accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Callie J. Mills see?
- In 2024, CMS data shows 15 Original Medicare patients and 24 services for Callie J. Mills. This counts Original Medicare only and measures volume, not quality.
- What is Callie J. Mills's NPI number?
- 1871159954. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Callie J. Mills, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 15 |
|---|---|
| Services billed to Medicare | 24 |
| Different services or procedures | 6 |
| Participating Medicare provider | Yes |
| Average age of these patients | 68 |
Most frequent services
- Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)12 services
Hospitals where Callie J. Mills works
Medicare's Facility Affiliation Data lists Callie J. Mills at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Providence St Peter HospitalOlympia, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500024
Practice locations
Addresses where Callie J. Mills is enrolled with Medicare (CMS data updated October 2, 2026).
- 1350 Marvin Rd NE, Suite DLacey, WA 98516 (888) 227‑3312
Group practices
Medicare enrollment lists Callie J. Mills as a member of these groups (CMS data updated October 2, 2026).
- Express Care WA PC66 clinicians in the group
- Express Care Or PC60 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Lacey
Clinicians with the same Medicare primary specialty in Lacey, WA — not a recommendation.
Other clinicians in Express Care WA PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | Oregon Health Sciences University School Of Medicine |
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1871159954 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians