NPPES file of Aug 9, 2026

Linnea Shen Amesur, D.O.

Internal Medicine Physician · Moreno Valley, CA

Linnea Shen Amesur, D.O. is an internal medicine physician with a practice address in Moreno Valley, California, and NPI 1861755415, issued on Jun 19, 2012. Check the license (California 20A12977, as entered in NPPES) on the Medical Board of California; 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
1861755415
Name
Linnea Shen Amesur
Credential
D.O.
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
20A12977 CA
Self-reported in NPPES; status is on the state search
Practice location
26520 Cactus Ave, Moreno Valley, CA 92555
Phone
(951) 486-5914
Enumerated
Jun 19, 2012
Record last updated
Dec 27, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20151216001571); accepts Medicare assignment
Medical or professional school
Lake Erie College Of Osteopathic Medicine, Erie, 2012
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 26520 Cactus Ave

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

  1. Ihab Abed, MDStudent in an Organized Health Care Education/Training Program1912830514
  2. Mohamed Abu-Qaoud, M.D.Internal Medicine Physician1366635534
  3. Barbara Ackerman, PH.D.Clinical Psychologist1639126410
  4. Sana Afroz, MDRheumatology Physician1356724074
  5. Georgina Aguilar-Portillo, MDFamily Medicine Physician1144804691
  6. Adolfo Aguilera, MDFamily Medicine Physician1477609808

Verify Linnea Shen Amesur in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 20A12977
    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 California 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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14% fewer Medicare Part D claims than the average internal medicine physician in 2024

2,724 Medicare Part D claims for 508 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 86 claims were for opioids.

  1. Linnea Amesur2,724
  2. Specialty average3,176

Most prescribed

  1. Atorvastatin Calcium193 claims
  2. Losartan Potassium120 claims
  3. Amlodipine Besylate114 claims
  4. Albuterol Sulfate Hfa107 claims
  5. Levothyroxine Sodium96 claims
  6. Lisinopril83 claims

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.

Bills Medicare through one group practice

  1. Southern California Permanente Medical GroupRiverside, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Linnea Shen Amesur among 17,696 internal medicine physician records in California

Linnea Shen Amesur, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 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 2012, is newer than 68% of them.

  • NPI issued2012 · 68% of these records are older, 29% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2012 · median 2004 among the 11,065 with a school on file
  • Record last updated2021 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

67 internal medicine physician records list a practice address in Moreno Valley

They are 67 of the 2,698 NPPES records with a practice address in Moreno Valley, and 17,696 internal medicine physician records in California.

The 8 internal medicine physician records with the nearest ZIP codes

  1. Mohamed Abu-Qaoud, M.D.Moreno Valley, CA 925551366635534
  2. Scott Allen, M.D.Moreno Valley, CA 925551184681710
  3. Roger Garrison, DOMoreno Valley, CA 925551013941475
  4. Douglas Hegstad, M.D.Moreno Valley, CA 925551649204009
  5. Jeffrey Katz, MDMoreno Valley, CA 925551316971476
  6. Daniel Kim, M.D.Moreno Valley, CA 925551295769651
  7. Lawrence Loo, MDMoreno Valley, CA 925551750311718
  8. William Ochoa, MDMoreno Valley, CA 925551558574954

Common questions

What is Linnea Shen Amesur, D.O.'s NPI number?

Linnea Shen Amesur, D.O.'s National Provider Identifier (NPI) is 1861755415, issued on Jun 19, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Linnea Shen Amesur, D.O. located?

The NPPES record lists a practice address at 26520 Cactus Ave, Moreno Valley, CA, 92555. Phone: (951) 486-5914. Providers update this record themselves, so call before visiting.

How can I verify Linnea Shen Amesur, D.O.'s license?

NPPES lists California license number 20A12977, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Linnea Shen Amesur, D.O. prescribe under Medicare Part D?

In 2024, Linnea Shen Amesur, D.O. had 2,724 Medicare Part D claims for 508 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.