DR. IAN MILLS M.D.
NPI 1104183755
Radiology - Pediatric Radiology in Fairfax, VA
About Dr. Ian Mills M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. IAN MILLS M.D. (NPI 1104183755) is an individual pediatric radiology provider in Fairfax, Virginia, licensed in Virginia (0101264312) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with Inova Alexandria Hospital, and maintains a secondary practice location in New Haven.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted 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
Dr. Ian Mills M.d. 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.
Medicare Billing Reassignments
4Medicare enrollment records show Ian Mills reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Fairfax, VA 22031
- Reassigned Medicare billing, District of Columbia, Maryland and Virginia enrollments
- 183 clinicians in this Medicare group
Falls Church, VA 22042
- Reassigned Medicare billing, District of Columbia and Virginia enrollments
- 183 clinicians in this Medicare group
Falls Church, VA 22042
- Reassigned Medicare billing, Maryland enrollment
- 57 clinicians in this Medicare group
Falls Church, VA 22043
- Reassigned Medicare billing, District of Columbia enrollment
- 178 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Inova Alexandria Hospital
Acute Care Hospitals · Alexandria, VAInova Loudoun Hospital
Acute Care Hospitals · Leesburg, VAInova Fairfax Hospital
Acute Care Hospitals · Falls Church, VAInova Fair Oaks Hospital
Acute Care Hospitals · Fairfax, VAInova Mount Vernon Hospital
Acute Care Hospitals · Alexandria, VAMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 18
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FAIRFAX, VA 22031
FAIRFAX, VA 22031
FAIRFAX, VA 22031
FAIRFAX, VA 22031
FAIRFAX, VA 22031
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 Ian Mills's NPI number?
The NPI number for Ian Mills is 1104183755. It was assigned to this individual provider in the NPPES registry on April 20, 2012.
Where is Ian Mills located?
Ian Mills practices at 2722 Merrilee Dr Ste 230, Fairfax, VA 22031. The listed phone number is (703) 698-4444.
What is Ian Mills's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Pediatric Radiology, with taxonomy code 2085P0229X.
Is Ian Mills enrolled in Medicare?
Yes. Ian Mills 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 organizations bill Medicare for Ian Mills's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ian Mills reassigns Medicare benefits to 4 organizations: Ifrc, LLC (Fairfax, VA), Fairfax Radiological Consultants (Falls Church, VA), Inova Health Care Services (Falls Church, VA) and Inova Reston Mri Center LLC (Falls Church, VA). Each 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 Ian Mills's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ian Mills accept?
Health plans from Oscar Health list Ian Mills 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 Ian Mills affiliated with any hospitals?
According to CMS data, Ian Mills is affiliated with Inova Alexandria Hospital, Inova Loudoun Hospital, Inova Fairfax Hospital, Inova Fair Oaks Hospital and Inova Mount Vernon Hospital.
When was this NPI record last updated?
The NPPES record for Ian Mills was last updated on February 4, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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. Ian Mills, M.D. · NPI 1104183755
Pediatric Radiology physician in Fairfax, Virginia. Individual provider, active in the CMS NPPES registry since April 20, 2012.
## Identity
- **NPI:** 1104183755 (Entity type: Individual)
- **Enumerated:** April 20, 2012
- **Primary specialty:** Radiology - Pediatric Radiology · taxonomy 2085P0229X
- **State license:** 0101264312 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 2722 MERRILEE DR STE 230, Fairfax, VA 22031-4400
- **Phone:** (703) 698-4444
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Ifrc, LLC (NPI 1508405317, Fairfax, VA); Fairfax Radiological Consultants (NPI 1114902509, Falls Church, VA); Inova Health Care Services (NPI 1952320061, Falls Church, VA); Inova Reston Mri Center LLC (NPI 1619265766, Falls Church, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Buffalo School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** February 4, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1104183755) · Data from the CMS NPPES public registry.