NPPES file of Aug 9, 2026

Margaret P. Ellis, MD

Internal Medicine Physician · Grove, OK

Margaret P. Ellis, MD is an internal medicine physician with a practice address in Grove, Oklahoma, and NPI 1649304114, issued on Mar 15, 2007. Check the license (Oklahoma 20200, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1649304114
Name
Margaret P. Ellis
Credential
MD
Primary taxonomy
Internal Medicine Physician 207R00000X
License numbers
20200 OK
E-1953 AR
Self-reported in NPPES; status is on the state search
Practice location
10 E 13TH St, Grove, OK 74344
Phone
(918) 787-1909
Enumerated
Mar 15, 2007
Record last updated
Jun 6, 2024
Fax
(918) 787-3866
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 10 E 13TH St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Emily Chandler, FNPFamily Nurse Practitioner1275020943
  2. Judy Hargis, APRNFamily Nurse Practitioner1801581004
  3. Kristy Hill, APRN, FNP-CFamily Nurse Practitioner1437454451
  4. Margaret Little, ARNPFamily Nurse Practitioner1922090265

Verify Margaret P. Ellis in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
    Search for license 20200
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oklahoma license search

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98% fewer Medicare Part D claims than the average internal medicine physician in 2024

54 Medicare Part D claims for 21 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Margaret Ellis54
  2. Specialty average3,176

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Internal Medicine Physician providers in Oklahoma

There are 1,115 internal medicine physician records in Oklahoma.

Other internal medicine physician records in Oklahoma

  1. Abdelrahman AbdallaOklahoma City, OK1104569227
  2. Al-Ola Abdallah, M.DTulsa, OK1386837151
  3. Ahmed Abou Elmagd, MDFort Sill, OK1205920717
  4. Addi Abuelshar, MDAltus, OK1295721678
  5. Ahmad Adam, MDOklahoma City, OK1750840732
  6. Chase Adams, MD, MSOklahoma City, OK1194655910
  7. Wellie Adlaon, M.D.Tishomingo, OK1245326925
  8. Muneeza Afif, MDTahlequah, OK1740544428
  9. Pallavi Agarwal, M.D.Tulsa, OK1831249812
  10. John Agent, DOSallisaw, OK1649217191

Common questions

What is Margaret P. Ellis, MD's NPI number?

Margaret P. Ellis, MD's National Provider Identifier (NPI) is 1649304114, issued on Mar 15, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Margaret P. Ellis, MD located?

The NPPES record lists a practice address at 10 E 13TH St, Grove, OK, 74344. Phone: (918) 787-1909. Providers update this record themselves, so call before visiting.

How can I verify Margaret P. Ellis, MD's license?

NPPES lists Oklahoma license number 20200, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Margaret P. Ellis, MD prescribe under Medicare Part D?

In 2024, Margaret P. Ellis, MD had 54 Medicare Part D claims for 21 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.