Provider Profile
Guinevere Z. Lillie, NP
Unclaimed ProfileAt a glance
- 8081 Innovation Park Dr, Fairfax, VA 22031
About Guinevere Lillie
Guinevere Z. Lillie, NP is a nurse practitioner based in Fairfax, VA. Guinevere is also listed as specializing in registered nurse and nurse practitioner — family. According to Medicare claims data, Guinevere cared for 92 Medicare patients across 172 services. The services billed most often include established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. The provider's National Provider Identifier (NPI) is 1639704786.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (571) 472-4724
- Email not available
Practice Locations
8081 INNOVATION PARK DR
Fairfax, VA 22031
Procedures Most Often Billed to Medicare
172 services · 92 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
104 | More often than most peers in Nurse Practitioner |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
68 | As often as other peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other nurse practitioners at this location 7
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 24 related providers in 3 groups
Other nurse practitioners in Fairfax 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2020 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Guinevere Z. Lillie's specialty?
Guinevere Z. Lillie is a nurse practitioner in Fairfax, VA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Guinevere Z. Lillie?
Guinevere Z. Lillie is listed at 8081 Innovation Park Dr, Fairfax, VA 22031. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Guinevere Z. Lillie?
The number on file is (571) 472-4724. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Guinevere Z. Lillie's NPI number?
Guinevere Z. Lillie's National Provider Identifier is 1639704786. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Guinevere Z. Lillie's education?
Guinevere Z. Lillie attended Other, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
How long has Guinevere Z. Lillie been practicing?
Guinevere Z. Lillie has 6 years experience. Calculated from a graduation year of 2020, reported in the CMS National Downloadable File.
CMS public data
What is Guinevere Z. Lillie known for?
According to Medicare billing data, Guinevere Z. Lillie the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Guinevere Z. Lillie confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Guinevere Z. Lillie. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.