Sandra Ann Mazur , APN-CNP
Nurse Practitioner • Bolingbrook, IL
130 N Weber Rd, Suite 112
Bolingbrook, IL 604401564
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on October 4, 2005; this date does not establish years in practice.
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Published CMS data list 184 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 — Established patient outpatient office visit: 119 service units.
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit: 27 service units.
- 99214 — Established patient outpatient office visit: 26 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 4 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 873 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Levothyroxine Sodium — 83 prescription fills, including refills.
- Amlodipine Besylate — 73 prescription fills, including refills.
- Atorvastatin Calcium — 72 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 38 records in the table · Guide: How to read Medicare Part D prescriber data
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Fewer Medicare Part B services than 60% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 127 in 2020 to 184 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
130 N Weber Rd
Suite 112
Bolingbrook, IL 604401564
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Endeavor Health Medical Group. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
1984
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
89 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $15,792 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $11,577 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
2,032 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$21,853 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $369.91 across 11 records.
By nature of payment
- Food and Beverage: $369.91 across 11 records.
Reporting-company totals (3 largest of 6)
- Amgen Inc.: $149.36 across 5 records.
- Axsome Therapeutics, Inc.: $112.42 across 1 record.
- Novo Nordisk Inc: $44.57 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
42 years (graduated 1984)
CMS Doctors and Clinicians data list 1984 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Sandra Mazur has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Sandra Mazur as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Bolingbrook and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Fewer Medicare Part B services than 60% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: 261. Middle half: 101 to 526.
Too few clinicians listed under Nurse Practitioner in Bolingbrook have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $21,010. Middle half: $8,652 to $42,014.
Too few clinicians listed under Nurse Practitioner in Bolingbrook have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,561 clinicians with data). Median for this group: $15,151. Middle half: $6,396 to $31,322.
Too few clinicians listed under Nurse Practitioner in Bolingbrook have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 70% of clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: 259. Middle half: 80 to 930.
Too few clinicians listed under Nurse Practitioner in Bolingbrook have Medicare Part D data for 2024 to compare.
Part D drug cost
Close to the middle for clinicians listed under Nurse Practitioner in Illinois (2024, 2,572 clinicians with data). Median for this group: $10,867. Middle half: $976 to $113,945.
Too few clinicians listed under Nurse Practitioner in Bolingbrook have Medicare Part D data for 2024 to compare.
6 active clinicians are listed under Nurse Practitioner with a practice address in Bolingbrook, IL (4,894 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 45% from 127 in 2020 to 184 in 2024.
- 2020: 127
- 2021: 177
- 2022: 176
- 2023: 165
- 2024: 184
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Medicare-allowed amount
Medicare-allowed amount increased 46% from $10,802 in 2020 to $15,792 in 2024.
- 2020: $10,802
- 2021: $14,992
- 2022: $15,487
- 2023: $15,023
- 2024: $15,792
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Paid by Medicare
Paid by Medicare increased 80% from $6,421 in 2020 to $11,577 in 2024.
- 2020: $6,421
- 2021: $11,123
- 2022: $11,499
- 2023: $10,215
- 2024: $11,577
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 99% from 439 in 2020 to 873 in 2024.
- 2020: 439
- 2021: 619
- 2022: 744
- 2023: 758
- 2024: 873
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30-day fills
30-day fills increased 113% from 953 in 2020 to 2,032 in 2024.
- 2020: 953
- 2021: 1,441
- 2022: 1,781
- 2023: 1,741
- 2024: 2,032
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Part D drug cost
Part D drug cost increased 274% from $5,837 in 2020 to $21,853 in 2024.
- 2020: $5,837
- 2021: $7,790
- 2022: $8,191
- 2023: $8,927
- 2024: $21,853
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $285.44 in 2021 to $369.91 in 2025.
- 2021: $285.44
- 2022: $134.94
- 2023: $356.56
- 2024: $656.53
- 2025: $369.91
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 11 records totaling $369.91.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Axsome Therapeutics, Inc. |
Food and Beverage
In-kind items and services
|
Symbravo | General | $112.42 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $78.61 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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VRAYLAR | General | $30.24 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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OTEZLA | General | $27.32 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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OTEZLA | General | $24.65 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Rybelsus | General | $24.58 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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Ozempic | General | $19.99 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
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Cologuard Collection Kit | General | $17.33 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $15.99 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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OTEZLA | General | $13.34 |
| Amgen Inc. |
Food and Beverage
In-kind items and services
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EVENITY | General | $5.44 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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119 | 71 | $200.00 | $80.34 |
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G0439
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
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27 | 27 | $283.00 | $118.36 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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26 | 22 | $278.00 | $115.76 |
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81003
Automated urinalysis test
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12 | 12 | $9.00 | $2.20 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 83 | 6,157 | $774.01 | 23 |
| Amlodipine Besylate | Amlodipine Besylate | 73 | 5,647 | $272.63 | 23 |
| Atorvastatin Calcium | Atorvastatin Calcium | 72 | 5,910 | $593.38 | 24 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 68 | 6,044 | $895.32 | 24 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 25 | 862 | $105.65 | — |
| Lisinopril | Lisinopril | 24 | 1,980 | $153.35 | — |
| Lorazepam | Lorazepam | 24 | 713 | $58.42 | — |
| Pantoprazole Sodium | Pantoprazole Sodium | 23 | 2,010 | $257.12 | — |
| Methylprednisolone | Methylprednisolone | 22 | 132 | $89.85 | 20 |
| Alprazolam | Alprazolam | 22 | 580 | $44.21 | — |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 22 | 1,690 | $303.21 | — |
| Meloxicam | Meloxicam | 21 | 1,410 | $82.13 | — |
| Escitalopram Oxalate | Escitalopram Oxalate | 20 | 1,140 | $66.99 | — |
| Carvedilol | Carvedilol | 19 | 1,390 | $118.74 | — |
| Montelukast Sodium | Montelukast Sodium | 18 | 1,450 | $148.90 | — |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 18 | 184 | $138.97 | 18 |
| Metformin Hcl | Metformin Hcl | 17 | 1,530 | $115.94 | — |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 17 | 1,387 | $30.67 | — |
| Sertraline Hcl | Sertraline Hcl | 16 | 1,320 | $79.45 | — |
| Hydrochlorothiazide | Hydrochlorothiazide | 16 | 1,380 | $24.22 | — |
| Metoprolol Succinate | Metoprolol Succinate | 16 | 1,357 | $195.09 | — |
| Spironolactone | Spironolactone | 16 | 1,440 | $201.10 | — |
| Metformin Hcl Er | Metformin Hcl | 16 | 1,260 | $94.37 | — |
| Metoprolol Tartrate | Metoprolol Tartrate | 15 | 1,350 | $57.28 | — |
| Azithromycin | Azithromycin | 15 | 75 | $45.54 | 13 |
(top 25 shown)
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-05-04NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 207Q00000X
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20070116000342
IL
4789684937
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Endeavor Health Medical Group
2650 Ridge Ave, Evanston, IL 602011700
Endeavor Health Medical Group
130 N Weber Rd, Bolingbrook, IL 604401519
Phone: 6306465777
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as SANDRA MAZUR, APN-CNP
Nurse Practitioner (license number reported to NPPES: IL 209001598)
Registered at 130 N WEBER RD STE 100, BOLINGBROOK, IL 604401519 (Tel: 6306465777)
NPI status registered as active in NPPES database
Registered at 130 N WEBER RD, SUITE 112, BOLINGBROOK, IL 604401564 (Tel: 6303783400)
Registered at 130 N WEBER RD, SUITE 112, BOLINGBROOK, IL 604401564 (Tel: 6303783400)
Recorded as SANDRA MAZUR, NP
Family Medicine (license number reported to NPPES: IL 209-001598)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Nurse Practitioners in Bolingbrook
- Katleen Tiongson, APN
- Karoline Trestka, APN-CNP
- Jennifer Hinchley, MSN, APRN, FNP-C
- Alyssa Roberts
- Marie Zelhart, NP
Mailing Address
130 N Weber Rd Ste 100
Bolingbrook, IL 604401519
Phone: 6306465777