Charles Abreu, MD
Hospitalist Physician · Riverside, CA
Charles Abreu, MD is a hospitalist physician with a practice address in Riverside, California, and NPI 1942837323, issued on Mar 25, 2020. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Charles Abreu
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 35.147514 OH
Self-reported in NPPES; status is on the state search - Practice location
- 4234 Riverwalk Pkwy Ste 230, Riverside, CA 92505
- Phone
- (951) 781-3672
- Enumerated
- Mar 25, 2020
- Record last updated
- May 16, 2026
- Fax
- (951) 781-0365
- Medicare enrollment
- Enrolled (PECOS I20240102002305); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 2020
- Entity
- Type 1 · individual
Also registered at 4234 Riverwalk Pkwy Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ahmad Alazzeh, MDPulmonary Disease Physician1194037945
- Judy Alfonso, PA-CPhysician Assistant1154471514
- Mona Alipour, M.DCritical Care Medicine (Internal Medicine) Physician1053709071
Verify Charles Abreu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average hospitalist physician in 2024
183 Medicare Part D claims for 39 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 68% of claims.
Most prescribed
- Albuterol Sulfate Hfa30 claims
- Trelegy Ellipta26 claims
- Breztri Aerosphere19 claims
- Roflumilast13 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
- Ohiohealth CorporationColumbus, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
Other hospitalist physician records in California
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- Michael Abdel-Malek, MDDublin, CA1952388852
- Amr Abdelaty, MDWoodland, CA1962996348
- Anwar Abdelhadi, M.D.Orange, CA1093784191
- Farid Abdelmalak, M.D.Santa Monica, CA1912392937
- Elijah AbdelmeseehLong Beach, CA1346827631
- Homayoun Abdollahzadeh, M.D.Rancho Mirage, CA1871802454
- Wajidah Abdul-KhabirDuarte, CA1215323522
- Rizwana Abdullah, MDRoseville, CA1194899401
Common questions
What is Charles Abreu, MD's NPI number?
Charles Abreu, MD's National Provider Identifier (NPI) is 1942837323, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Charles Abreu, MD located?
The NPPES record lists a practice address at 4234 Riverwalk Pkwy Ste 230, Riverside, CA, 92505. Phone: (951) 781-3672. Providers update this record themselves, so call before visiting.
How can I verify Charles Abreu, MD's license?
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 Charles Abreu, MD prescribe under Medicare Part D?
In 2024, Charles Abreu, MD had 183 Medicare Part D claims for 39 beneficiaries; the average among hospitalist physician prescribers was 521. 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.