JOHN CHARLES GREENERT (M.D., M.P.H.) – Neurology Physician, NPI 1043625551
Neurology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
590 NEUROLOGY in WA
Provider Addresses for JOHN CHARLES GREENERT (M.D., M.P.H.)
1100 9TH AVE
SEATTLE, WA 981012756
Phone: (206) 341-0860
Fax: (206) 341-1401
Type: Location
PO BOX 27128
SALT LAKE CITY, UT 841270128
Phone: (801) 387-7880
Type: Mailing
4401 HARRISON BLVD
OGDEN, UT 844033195
Phone: (801) 387-7880
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
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: 2022-09-07
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20181231001927 | I | Neurology | UT | TBD |
| I20220907002594 | I | Neurology | WA | 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 |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 83 | 45 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 75 | 53 | $0 |
| 99291 | Critical care, first 30-74 minutes | 48 | 30 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 19 | 19 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 18 | 18 | $0 |
Insurance plans in this area (ZIP 98101)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Critical Care (Intensivists) | WA | |
| Gastroenterology, Internal Medicine | WA | |
| - | WA | |
| - | WA | |
| D E R M A T O L O G Y | WA | |
| - | WA | |
| Internal Medicine | WA | |
| - | WA | |
| Internal Medicine, Hematology/Oncology | WA | |
| - | WA |
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