DR. NANCY GRYNIEWICZ (M.D.) – Family Medicine Physician, NPI 1558368043
Family Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
5,037 FAMILY PRACTICE in IL
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Provider Addresses for DR. NANCY GRYNIEWICZ (M.D.)
965, Lake Street, Oak Park, Montgomery, Montgomery County, Alabama, 36104, United States
OAK PARK, IL 603011292
Phone: (708) 383-0400
Fax: (708) 383-4314
Type: Mailing
Oak Park, Waterloo Road, Oak Park, City of Moreland, Victoria, 3046, Australia
OAK PARK, IL 603011292
Phone: (708) 383-0400
Fax: (708) 383-4314
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 275 Open Payments records for all available years, with a total value of $5,759.
Total Amount is formed as General ($5,759) + Research ($0) + Ownership ($0) = $5,759.
Last reported payment date: 2024-12-30 • Largest payer in this snapshot: ABBVIE INC. ($879).
Total Amount
$5,759
General + Research + Ownership
Payments
275
Total payment records
General Amount
$5,759
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-30
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $879 |
| Lilly USA, LLC | $848 |
| Novo Nordisk Inc | $791 |
| PFIZER INC. | $404 |
| AstraZeneca Pharmaceuticals LP | $289 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-08-30
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100830000312 | I | Family Practice | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99490 | Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 629 | 104 | $0 |
| 99458 | Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes | 579 | 56 | $0 |
| 99457 | Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 535 | 56 | $0 |
| 99454 | Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 467 | 52 | $0 |
| 99091 | Collection and interpretation of physical parameters stored in computers and/or transmitted by the patient and/or caregiver to qualified health care professional, requiring 30 minutes or more, per 30 days | 426 | 50 | $0 |
Insurance plans in this area (ZIP 60301)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IL |
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