NPPES file of Aug 9, 2026

John A. Memken, M.D.

Family Medicine Physician · Hannibal, MO

John A. Memken, M.D. is a family medicine physician with a practice address in Hannibal, Missouri, and NPI 1932188471, issued on Jan 12, 2006. Check the license (Missouri R1C68, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; 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
1932188471
Name
John A. Memken
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
R1C68 MO
Self-reported in NPPES; status is on the state search
Practice location
100 Medical Dr, Hannibal, MO 63401
Phone
(573) 231-3143
Enumerated
Jan 12, 2006
Record last updated
Mar 3, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(573) 231-3728
Medicaid ID
201724135 MO
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 100 Medical Dr

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

  1. Cathryn Ahearn, ODOptometrist1881606200
  2. Sandra Ahlum, M.D.Obstetrics & Gynecology Physician1427037183
  3. Michelle Allen, N.P.Women's Health Nurse Practitioner1902907561
  4. Joseph Amavisca, MDFamily Medicine Physician1316178189
  5. Brian Bamer, M.D.Pediatrics Physician1447683487
  6. Arif Bari, M.D.Hematology & Oncology Physician1932188695

Verify John A. Memken in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license R1C68
    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 Missouri license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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100% fewer Medicare Part D claims than the average family medicine physician in 2024

14 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. John Memken14
  2. Specialty average3,544

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.

John A. Memken among 2,991 family medicine physician records in Missouri

John A. Memken, M.D. is one of 2,991 family medicine physician records with a practice address in Missouri. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.

  • NPI issued2006 · 13% of these records are older, 52% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 59% of these records are
  • Record last updated2021 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

15 family medicine physician records list a practice address in Hannibal

They are 15 of the 569 NPPES records with a practice address in Hannibal, and 2,991 family medicine physician records in Missouri.

The 8 family medicine physician records with the nearest ZIP codes

  1. Joseph Amavisca, MDHannibal, MO 634011316178189
  2. Misty Bowen, D.O.Hannibal, MO 634011881038834
  3. Carrol Boxerman, D.O.Hannibal, MO 634011982683652
  4. Erick Calmet Del Castillo, M.D.Hannibal, MO 634011447401716
  5. Gary Early, DOKirksville, MO 634011215913132
  6. Jeffry Evans, M.D.Hannibal, MO 634011548249238
  7. Nickolas Gillette, D.O.Hannibal, MO 634011598074353
  8. Lent Johnson, M.D.Hannibal, MO 634011457330052

Common questions

What is John A. Memken, M.D.'s NPI number?

John A. Memken, M.D.'s National Provider Identifier (NPI) is 1932188471, issued on Jan 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is John A. Memken, M.D. located?

The NPPES record lists a practice address at 100 Medical Dr, Hannibal, MO, 63401. Phone: (573) 231-3143. Providers update this record themselves, so call before visiting.

How can I verify John A. Memken, M.D.'s license?

NPPES lists Missouri license number R1C68, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does John A. Memken, M.D. prescribe under Medicare Part D?

In 2024, John A. Memken, M.D. had 14 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.