LISA CHRISTINE MERRILL (M.D.) – Internal Medicine Physician, NPI 1235109653
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,234 HOSPITALIST in VA
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Provider Addresses for LISA CHRISTINE MERRILL (M.D.)
Sentara Williamsburg Regional Medical Center, 100, Sentara Circle, Williamsburg, York County, Virginia, 23188, United States
ROOM 2C
WILLIAMSBURG, VA 231885713
Phone: (757) 984-7218
Fax: (757) 984-7210
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 3 Open Payments records for all available years, with a total value of $313.
Total Amount is formed as General ($313) + Research ($0) + Ownership ($0) = $313.
Last reported payment date: 2024-09-24 • Largest payer in this snapshot: Merck Sharp & Dohme LLC ($125).
Total Amount
$313
General + Research + Ownership
Payments
3
Total payment records
General Amount
$313
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-09-24
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Merck Sharp & Dohme LLC | $125 |
| Galderma Laboratories, L.P. | $115 |
| Bausch & Lomb Americas Inc. | $73 |
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: 2010-11-04
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 |
|---|---|---|---|---|
| I20101104001260 | I | Hospitalist | VA | 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 |
|---|---|---|---|---|
| 99239 | Hospital discharge day management, more than 30 minutes | 224 | 218 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 120 | 88 | $0 |
| 99233 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 92 | 71 | $0 |
| 99223 | Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 34 | 34 | $0 |
| 99497 | Advance care planning, first 30 minutes | 25 | 24 | $0 |
Insurance plans in this area (ZIP 23188)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine | VA | |
| Nurse Practitioner | VA | |
| - | MI | |
| - | VA | |
| - | VA | |
| Pulmonary Disease, Internal Medicine | GA | |
| N E U R O L O G Y | VA | |
| Physician Assistant | VA | |
| - | VA | |
| Family Practice | VA |
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