MARY ELIZABETH WATERLOO – Nurse Practitioner, NPI 1720634827
Nurse Practitioner
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Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for MARY ELIZABETH WATERLOO
Elm Street, Lockport, Niagara County, New York, 14094, United States
LOCKPORT, IL 604412629
Phone: (815) 901-2188
Type: Mailing
2160 S 1ST AVE
MAYWOOD, IL 601533328
Phone: (708) 216-9000
Type: Mailing
Governors Highway, Homewood, Rich Township, Cook County, Illinois, 60430, United States
HOMEWOOD, IL 604301146
Phone: (708) 960-4280
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $287.
Total Amount is formed as General ($287) + Research ($0) + Ownership ($0) = $287.
Last reported payment date: 2024-11-08 • Largest payer in this snapshot: Philips North America LLC ($221).
Total Amount
$287
General + Research + Ownership
Payments
2
Total payment records
General Amount
$287
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-08
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Philips North America LLC | $221 |
| NESTLE HEALTHCARE NUTRITION INC. | $66 |
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: 2019-11-01
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 |
|---|---|---|---|---|
| I20191101000115 | I | Nurse Practitioner | 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 |
|---|---|---|---|---|
| 99308 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes | 351 | 187 | $0 |
| 99305 | Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes | 295 | 289 | $0 |
| 99307 | Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes | 40 | 28 | $0 |
| 99304 | Initial nursing facility care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | 27 | 27 | $0 |
| 99309 | Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes | 25 | 21 | $0 |
Insurance plans in this area (ZIP 60441)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Nurse Practitioner | IL | |
| Nurse Practitioner | IN | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IL | |
| Nurse Practitioner | IN | |
| Nurse Practitioner | IL | |
| - | IL |
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