Provider Profile
Listed in the NPI registry as a nurse practitioner, Diana Guillaume, NP practices in Skokie, IL. Diana is also listed as specializing in nurse practitioner — adult health. Medicare claims data shows Diana provided 132 services to 88 patients. The services billed most often include established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more, hemoglobin a1c level, and annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit. NPI 1396037685 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
4120 DEMPSTER ST
Skokie, IL 60076
132 services · 88 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
72 | More often than most peers in Nurse Practitioner |
| Hemoglobin a1c level | Lab test | 83036 |
32 | As often as other peers in Nurse Practitioner |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
15 | Less often than most peers in Nurse Practitioner |
| Administration of influenza virus vaccine | Billing code | G0008 |
13 | Less often than most peers in Nurse Practitioner |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Diana Guillaume is a nurse practitioner in Skokie, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Diana Guillaume is listed at 4120 Dempster St, Skokie, IL 60076. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (224) 601-7032. Contact the office directly to confirm availability and scheduling.
NPI registry
Diana Guillaume's National Provider Identifier is 1396037685. 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
Diana Guillaume attended Other, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
Diana Guillaume has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Diana Guillaume 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
Not yet. This profile is built from public federal data and has not been confirmed by Diana Guillaume. If this is you, claiming it is free.
Guide.md
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