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Edit this profileWhere to find Mariola U. Grzeszczyk, APRN
- Rockford location main office
5875 E Riverside Blvd, Rockford, IL 61114 - Chicago location
5140 N California Ave Ste 575, Chicago, IL 60625 - Willowbrook location
40 75th St, Willowbrook, IL 60527
About Mariola Grzeszczyk
Mariola U. Grzeszczyk, APRN is a nurse practitioner practicing in Rockford, IL. Mariola is also listed as specializing in nurse practitioner — family. Medicare claims data shows Mariola provided 197 services to 171 patients. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, detection test by immunoassay with direct visual observation for influenza virus, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more. This provider record is associated with NPI 1003425463.
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
- (815) 398-9491
- Email not available
Practice Locations
5875 E RIVERSIDE BLVD
Rockford, IL 61114
5140 N California Ave Ste 575
Chicago, IL 60625
40 75th St
Willowbrook, IL 60527
Procedures Most Often Billed to Medicare
197 services · 171 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
37 | Less often than most peers in Nurse Practitioner |
| Detection test by immunoassay with direct visual observation for influenza virus | Lab test | 87804 |
36 | As often as other peers in Nurse Practitioner |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
27 | Less often than most peers in Nurse Practitioner |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
24 | As often as other peers in Nurse Practitioner |
| Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) | Lab test | 87811 |
22 | As often as other peers in Nurse Practitioner |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | Lab test | 87880 |
21 | As often as other peers in Nurse Practitioner |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
15 | Less often than most peers in Nurse Practitioner |
| Urinalysis, manual test | Lab test | 81002 |
15 | 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.
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 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
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 — 23 related providers in 3 groups
Other nurse practitioners in Rockford 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2019 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Mariola U. Grzeszczyk specialize in?
Mariola U. Grzeszczyk is a nurse practitioner in Rockford, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Mariola U. Grzeszczyk located?
Mariola U. Grzeszczyk is listed at 5875 E Riverside Blvd, Rockford, IL 61114. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Mariola U. Grzeszczyk's phone number?
The number on file is (815) 398-9491. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Mariola U. Grzeszczyk?
Mariola U. Grzeszczyk's National Provider Identifier is 1003425463. 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
Where did Mariola U. Grzeszczyk train?
Mariola U. Grzeszczyk attended Other, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Mariola U. Grzeszczyk have?
Mariola U. Grzeszczyk has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What does Mariola U. Grzeszczyk do most often?
According to Medicare billing data, Mariola U. Grzeszczyk 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
Is Mariola U. Grzeszczyk's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Mariola U. Grzeszczyk. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.