Doctor profile · Federal record
Dr. Nancy Gryniewicz, M.D.
Family Medicine Physician (CMS: Family Practice) · Oak Park, IL
- NPI 1558368043
- Accepts Medicare
- 32 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
965 Lake St
Oak Park, IL 603011292
(708) 383-0400
fax (708) 383-4314
Credentials & registration
- NPI registered
- June 2005 — 21 yrs on file
- Profile last updated
- May 24, 2022
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Illinois #036089707
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558368043. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
3,987
Distinct HCPCS
10
Medicare allowed
$214,700
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 629 | 104 | $65 | |
99458 |
Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes | 579 | 56 | $41 | |
99457 |
Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | 535 | 56 | $50 | |
99454 |
Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | 467 | 52 | $51 | |
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 | $57 | |
99439 |
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 213 | 91 | $49 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 171 | 95 | $134 | |
G0442 |
Annual alcohol misuse screening, 5 to 15 minutes | 105 | 105 | $19 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 103 | 103 | $134 | |
G0444 |
Annual depression screening, 5 to 15 minutes | 98 | 98 | $19 |
In context: peer comparison
Among 23 peers in Oak Park Family Medicine Physician, average services per provider: 74. This provider delivers 54× the peer median.Open Payments
Industry payments received
All-time total
$3,282
Transactions
135
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 15 | $457.30 | |
| Pfizer INC. | 18 | $403.53 | |
| Novo Nordisk INC | 23 | $403.12 | |
| Lilly USA, LLC | 17 | $390.69 | |
| AstraZeneca Pharmaceuticals Lp | 13 | $289.13 | |
| GlaxoSmithKline, LLC. | 13 | $280.89 | |
| Tempus Ai, INC | 7 | $224.59 | |
| Corcept Therapeutics | 5 | $174.37 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 9 | $170.51 | |
| Bayer Healthcare Pharmaceuticals INC. | 3 | $65.70 | |
| Exact Sciences Corporation | 3 | $63.84 | |
| Astellas Pharma US INC | 3 | $55.38 | |
| Amgen INC. | 2 | $44.27 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 3 | $44.08 | |
| Inspire Medical Systems, INC. | 1 | $38.85 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,418
Patients
711
Total drug cost
$260,133
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Lisinopril | Generic | 290 | 88 | $2,637 |
| Amlodipine Besylate | Generic | 276 | 88 | $2,471 |
| Atorvastatin Calcium | Generic | 266 | 74 | $3,438 |
| Rosuvastatin Calcium | Generic | 240 | 78 | $3,964 |
| Simvastatin | Generic | 190 | 55 | $2,018 |
| Levothyroxine Sodium | Generic | 189 | 51 | $3,554 |
| Metformin Hcl | Generic | 173 | 49 | $1,008 |
| Losartan Potassium | Generic | 144 | 44 | $1,779 |
| Metoprolol Succinate | Generic | 142 | 40 | $2,325 |
| Montelukast Sodium | Generic | 106 | 28 | $1,443 |
Hospital affiliations
Frequently asked questions
What is Dr. Nancy Gryniewicz's medical specialty?
Dr. Nancy Gryniewicz practices Family Medicine Physician in Oak Park, IL.
Where does Dr. Nancy Gryniewicz practice?
Dr. Nancy Gryniewicz practices at 965 Lake St, Oak Park, IL 603011292. Office phone: 7083830400.
What is Dr. Nancy Gryniewicz's NPI?
Dr. Nancy Gryniewicz's National Provider Identifier (NPI) is 1558368043, issued by NPPES.
Does Dr. Nancy Gryniewicz accept Medicare assignment?
Yes. Dr. Nancy Gryniewicz accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Nancy Gryniewicz commonly perform?
Top Medicare-reported procedures in 2023: Chronic care management services (HCPCS 99490); Management using the results of remote vital sign monitoring per calendar month (HCPCS 99458); Management using the results of remote vital sign monitoring per calendar month (HCPCS 99457). Source: CMS Medicare Physician & Other Practitioners file.