DR. MARGARET P ELLIS (MD) – Internal Medicine Physician, NPI 1649304114
Internal Medicine Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,274 INTERNAL MEDICINE in AR
Provider Addresses for DR. MARGARET P ELLIS (MD)
600 MEMORIAL DR
BELLA VISTA, AR 727141847
Phone: (479) 855-6165
Fax: (479) 855-2831
Type: Mailing
216 S 7th St
Vinita, OK 743013742
Phone: (918) 256-1500
Fax: (918) 323-0460
Type: Location
21 W Central Ave
Miami, OK 743546815
Phone: (918) 542-3900
Fax: (918) 542-3928
Type: Location
3001 QUAIL SPRINGS PKWY FL 5
OKLAHOMA CITY, OK 731342640
Phone: (918) 787-1909
Fax: (918) 787-3866
Type: Mailing
10 E 13TH ST
GROVE, OK 743445300
Phone: (918) 787-1909
Fax: (918) 787-3866
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
Loading prescription activity...
Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $146.
Total Amount is formed as General ($146) + Research ($0) + Ownership ($0) = $146.
Last reported payment date: 2023-05-04 • Largest payer in this snapshot: ACADIA Pharmaceuticals Inc ($146).
Total Amount
$146
General + Research + Ownership
Payments
2
Total payment records
General Amount
$146
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2023-05-04
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ACADIA Pharmaceuticals Inc | $146 |
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: 2010-01-16
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 |
|---|---|---|---|---|
| I20031230000791 | I | Internal Medicine | AR | TBD |
| I20100116000290 | I | Internal Medicine | OK | 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 72714)
Loading plans...
Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Critical Care (Intensivists), Nephrology | OK | |
| Hematology/Oncology, Internal Medicine | TX | |
| Nephrology, Internal Medicine | OKLAHOMA | |
| Certified Registered Nurse Anesthetist (Crna) | TX | |
| Cardiovascular Disease (Cardiology), Internal Medicine | OK | |
| R H E U M A T O L O G Y | NY | |
| Nurse Practitioner | OK | |
| Emergency Medicine | OK | |
| N E U R O S U R G E R Y | KS | |
| Nurse Practitioner | OK |
Reviews
All reviews are moderated before publication. Reviews reflect users' opinions; we do not verify the accuracy of individual reviews.
No reviews yet. Be the first to share your experience — your opinion helps families compare providers.