Medicare Enrolled
Dr. Nancy Gryniewicz, M.D.
Family Medicine · Oak Park, IL
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Gryniewicz from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Gryniewicz
Dr. Nancy Gryniewicz is a family medicine specialist in Oak Park, IL, with 21 years of NPI registration. Based on federal Medicare data, Dr. Gryniewicz performed 3,987 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Gryniewicz received a total of $19,484 from 58 pharmaceutical and/or device companies across 1060 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Gryniewicz is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 21 years of NPI registration
▲ Top 3% volume in IL
$19,484 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗3,987
Medicare services
Top 3% in IL for family medicine
Not available
Unique patients (not deduplicated)
$43
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Chronic care management, first 20 min/month This service covers the first 20 minutes of clinical staff time directed by a healthcare professional each calendar month to manage chronic conditions. |
629 | $48 | $100 |
| Remote vital sign monitoring management, each additional 20 minutes This code covers the time spent by a provider managing patient data from remote vital sign monitoring devices. It applies to each additional 20-minute increment beyond the initial monthly service period. |
579 | $33 | $50 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
535 | $40 | $65 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
467 | $41 | $75 |
| Remote physiological data monitoring, 30 days Collection and interpretation of physical parameters transmitted by the patient or caregiver over a 30-day period, requiring at least 30 minutes of professional time. |
426 | $45 | $110 |
| Chronic care management, additional 20 min/month This service covers an extra 20 minutes of clinical staff time directed by a healthcare professional for managing two or more chronic conditions each calendar month. |
213 | $37 | $78 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
171 | $88 | $295 |
| Annual alcohol misuse screening, 5 to 15 minutes | 105 | $19 | $41 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
103 | $134 | $225 |
| Annual depression screening | 98 | $19 | $42 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
94 | $61 | $172 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
86 | $10 | $29 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
78 | $13 | $39 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
67 | $32 | $48 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
65 | $72 | $86 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
54 | $3 | $27 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
47 | $11 | $53 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
40 | $1 | $17 |
| Creatinine test (kidney function) A blood test that measures the amount of creatinine to assess kidney function or detect muscle injury. |
35 | $5 | $33 |
| Urine microalbumin test (kidney screening) A laboratory test that measures the amount of microalbumin, a small protein, in a urine sample. This test is used to detect early signs of kidney damage. |
34 | $6 | $90 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
18 | $9 | $122 |
| Pneumococcal conjugate vaccine (PCV20) An intramuscular injection of the 20-valent pneumococcal conjugate vaccine. It is used to protect against diseases caused by Streptococcus pneumoniae bacteria. |
15 | $262 | $355 |
| Pneumonia vaccine administration This procedure involves the injection of a vaccine to protect against pneumococcal disease. It is administered by a healthcare provider. |
15 | $30 | $40 |
| Ear wax removal A procedure to remove impacted ear wax from the ear canal. |
13 | $23 | $89 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
Industry Payment Transparency
Open Payments through 2024 ↗$19,484
Total received (2018-2024)
Avg $2,783/year across 7 years
Top 1% in IL for family medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
58
Companies
1,060
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,282
2023
$2,477
2022
$2,535
2021
$3,209
2020
$2,114
2019
$2,523
2018
$3,345
Payments by company (2024)
ABBVIE INC.
$457
PFIZER INC.
$404
Novo Nordisk Inc
$403
Lilly USA, LLC
$391
AstraZeneca Pharmaceuticals LP
$289
GlaxoSmithKline, LLC.
$281
Tempus AI, Inc
$225
Corcept Therapeutics
$174
Boehringer Ingelheim Pharmaceuticals, Inc.
$171
Bayer Healthcare Pharmaceuticals Inc.
$66
Exact Sciences Corporation
$64
Astellas Pharma US Inc
$55
Amgen Inc.
$44
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$44
Inspire Medical Systems, Inc.
$39
Esperion Therapeutics, Inc.
$37
Takeda Pharmaceuticals U.S.A., Inc.
$36
Kowa Pharmaceuticals America, Inc.
$32
Lundbeck LLC
$24
Phadia US Inc.
$19
Cranial Technologies, Inc
$14
Otsuka America Pharmaceutical, Inc.
$13
Top 3 companies account for 38.5% of 2024 payments
All-time payments by company (2018-2024) ›
Lilly USA, LLC
$2,976
Novo Nordisk Inc
$2,526
AstraZeneca Pharmaceuticals LP
$1,557
PFIZER INC.
$1,298
GlaxoSmithKline, LLC.
$1,296
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,228
ABBVIE INC.
$1,136
Amgen Inc.
$660
Takeda Pharmaceuticals U.S.A., Inc.
$628
Astellas Pharma US Inc
$525
AbbVie Inc.
$473
Merck Sharp & Dohme Corporation
$454
SANOFI-AVENTIS U.S. LLC
$330
E.R. Squibb & Sons, L.L.C.
$320
Teva Pharmaceuticals USA, Inc.
$306
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$266
Allergan Inc.
$229
Tempus AI, Inc
$225
Bayer HealthCare Pharmaceuticals Inc.
$208
Janssen Pharmaceuticals, Inc
$201
Esperion Therapeutics, Inc.
$184
Kowa Pharmaceuticals America, Inc.
$181
Corcept Therapeutics
$174
Ferring Pharmaceuticals Inc.
$169
SANOFI PASTEUR INC.
$156
Bayer Healthcare Pharmaceuticals Inc.
$154
Biohaven Pharmaceutical Holding Company Ltd.
$138
Phadia US Inc.
$122
Allergan, Inc.
$119
IRONWOOD PHARMACEUTICALS, INC
$113
Bausch Health US, LLC
$109
Exact Sciences Corporation
$104
Biohaven Pharmaceuticals, Inc.
$101
Radius Health, Inc.
$97
Shire North American Group Inc
$96
Sunovion Pharmaceuticals Inc.
$67
Synergy Pharmaceuticals Inc
$63
Currax Pharmaceuticals LLC
$47
Nalpropion Pharmaceuticals LLC
$41
Abbott Laboratories
$39
Inspire Medical Systems, Inc.
$39
EISAI INC.
$32
Genentech USA, Inc.
$28
ARBOR PHARMACEUTICALS, INC.
$27
Cranial Technologies, Inc
$27
RedHill Biopharma Inc.
$25
Lundbeck LLC
$24
Adlon Therapeutics L.P.
$19
Sanofi Pasteur Inc.
$19
Amarin Pharma Inc.
$19
Nalpropion Pharmaceuticals, Inc.
$17
Novartis Pharmaceuticals Corporation
$15
Ironwood Pharmaceuticals, Inc
$14
Horizon Therapeutics plc
$14
Otsuka America Pharmaceutical, Inc.
$13
Philips Electronics North America Corporation
$13
VistaPharm, Inc.
$12
Eisai Inc.
$11
Top 3 companies account for 36.2% of all-time payments
Associated products mentioned in payments ›
ADHANSIA XR · AIRSUPRA · AJOVY · ANORO · ANORO ELLIPTA · APLENZIN · AREXVY · AUSTEDO · Aimovig · AirDuo Digihaler · Amitiza · BASAGLAR · BELSOMRA · BREO · BREZTRI · BREZTRI AEROSPHERE · BYDUREON · BYSTOLIC · Belviq · CAMZYOS · CHANTIX · COLOGUARD · COLOGUARD DNA CAPTURE REAGENTS · COMIRNATY · CONTRAVE · CREON · Cologuard Collection Kit · DUEXIS · DUZALLO · Doc Band · ELIQUIS · EMGALITY · ENTRESTO · EUFLEXXA · EVENITY · Edarbi · Edarbyclor · FARXIGA · FASENRA · FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE · FLUZONE HIGH-DOSE · FLUZONE QUADRIVALENT · FLUZONE QUADRIVALENT NORTHERN HEMISPHERE · FORTEO · FREESTYLE LIBRE 3 · GEMTESA · HUMIRA · INSPIRE · INVOKANA · ImmunoCAP · JANUVIA · JARDIANCE · Kerendia · Korlym · LINZESS · LOKELMA · LYRICA · Linzess · Livalo · MENQUADFI · MOUNJARO · MYDAYIS · MYRBETRIQ · Myrbetriq · NEXLETOL · NEXLIZET · NURTEC ODT · Otezla · Ozempic · PAXLOVID · PREMARIN · PREVNAR 13 · PREVNAR 20 · ProAir Digihaler · QULIPTA · REXULTI · RYBELSUS · Repatha · Rybelsus · SHINGRIX · SOLIQUA · SOLIQUA 100/33 · STIOLTO RESPIMAT · SYMBICORT · Saxenda · TOUJEO · TRADJENTA · TRELEGY ELLIPTA · TRINTELLIX · TRULANCE · TRULICITY · Talicia · Thyquidity · Tresiba · Trintellix · Trulance · Tymlos · UBRELVY · VIBERZI · VIIBRYD · VRAYLAR · VYVANSE · Vascepa · Veozah · Victoza · Vyvanse · WELLBUTRIN · Wegovy · Wellcentive Undiv · XARELTO · XIFAXAN · Xofluza · Xultophy 100/3.6 · ZEPBOUND · ZORYVE
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Family medicine physicians in nearby ZIP areas
3,150
County median income
$81,797
Nearest hospital to ZIP centroid (approximate)
WEST SUBURBAN MEDICAL CENTER
0.5 mi
0.5 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Gryniewicz is a clinical cardiology specialist, with above-average Medicare volume (top 3% in IL), with 21 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Gryniewicz experienced with chronic care management, first 20 min/month?
Based on Medicare claims data, Dr. Gryniewicz performed 629 chronic care management, first 20 min/month services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Gryniewicz receive payments from pharmaceutical companies?
Yes. Dr. Gryniewicz received a total of $19,484 from 58 companies across 1,060 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Gryniewicz's costs compare to other family medicine physicians in Oak Park?
Dr. Gryniewicz's average Medicare payment per service is $43. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Gryniewicz) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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