DR. MONICA L MAYHILL (MD) – Family Medicine Physician, NPI 1902858061
Family Medicine Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,037 OBSTETRICS/GYNECOLOGY in WA
Provider Addresses for DR. MONICA L MAYHILL (MD)
PO BOX 84026
SEATTLE, WA 981248426
Phone: (206) 852-6630
Type: Mailing
751 NE Blakely Dr Ste 5010
Issaquah, WA 980296201
Phone: (425) 394-0700
Fax: (425) 394-0701
Type: Location
Jefferson Building, 1600, East Jefferson Street, Central District, Seattle, King County, Washington, 98122, United States
STE 510
SEATTLE, WA 981225698
Phone: (206) 320-4888
Fax: (206) 320-4203
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 1 Open Payments records for all available years, with a total value of $34.
Total Amount is formed as General ($34) + Research ($0) + Ownership ($0) = $34.
Last reported payment date: 2024-03-16 • Largest payer in this snapshot: Lilly USA, LLC ($34).
Total Amount
$34
General + Research + Ownership
Payments
1
Total payment records
General Amount
$34
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-03-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Lilly USA, LLC | $34 |
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: 2025-02-19
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 |
|---|---|---|---|---|
| I20060922000117 | I | Family Practice | WA | TBD |
| I20250219000642 | I | Family Practice | OR | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 89 | 50 | $0 |
| G0439 | Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 14 | 14 | $0 |
Insurance plans in this area (ZIP 98124)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| FAMILY MEDICINE | WA | 90670 | Pneumococcal vaccine for injection into muscle | 17 | 17 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | WA | |
| Physician Assistant | FL | |
| Nurse Practitioner | OR | |
| Physician Assistant | WA | |
| Physician Assistant | WA | |
| Physician Assistant | WA | |
| Nurse Practitioner | OR | |
| Nurse Practitioner | WA | |
| Nurse Practitioner | VA | |
| Physician Assistant | IL |
Reviews
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