GREGORY WILLIAM MALLEK (M.D.) – Obstetrics & Gynecology Physician, NPI 1003012303
Obstetrics & Gynecology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,038 OBSTETRICS/GYNECOLOGY in WA
Provider Addresses for GREGORY WILLIAM MALLEK (M.D.)
400 S 43rd St
Renton, WA 980555714
Phone: (425) 690-1000
Type: Location
Tuality 8th Avenue Medical Plaza, 364, Southeast 8th Avenue, Central Hillsboro, Hillsboro, Metro, Washington County, Oregon, 97123, United States
SUITE 205
HILLSBORO, OR 971234253
Phone: (503) 681-4145
Type: Mailing
1400 E KINCAID ST
MOUNT VERNON, WA 982744127
Phone:
Type: Mailing
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.
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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: 2019-07-30
PECOS data refreshed: 2026-06-15
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 |
|---|---|---|---|---|
| I20100923000912 | I | Obstetrics/Gynecology | OR | TBD |
| I20190730002318 | I | Obstetrics/Gynecology | 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.
No Medicare fee-for-service utilization data available for this provider in our database.
Insurance plans in this area (ZIP 98055)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| D E R M A T O L O G Y | NY | |
| Physician Assistant | WA | |
| Nurse Practitioner | WA | |
| Nurse Practitioner | WA | |
| - | WA | |
| Undefined Physician Type (Specify) | WA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | WA | |
| Physician Assistant | WA | |
| O B S T E T R I C S/ G Y N E C O L O G Y | TX | |
| U R O L O G Y | WA |
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