Rebecca M. Lekim, D.O
Hospitalist Physician · Castro Valley, CA
Rebecca M. Lekim, D.O is a hospitalist physician with a practice address in Castro Valley, California, and NPI 1780079509, issued on Mar 30, 2015. Check the license (California 20A15015, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rebecca M. Lekim
- Credential
- D.O
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A15015 CA
Self-reported in NPPES; status is on the state search - Practice location
- 20101 Lake Chabot RD, Castro Valley, CA 94546
- Phone
- (510) 727-3256
- Enumerated
- Mar 30, 2015
- Record last updated
- Feb 17, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20180928002497); accepts Medicare assignment
- Medical or professional school
- Western University Of Health Sciences College Of Dental Med, 2015
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 20101 Lake Chabot RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rebecca M. Lekim in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15015Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average hospitalist physician in 2024
352 Medicare Part D claims for 125 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 24 claims were for opioids.
Most prescribed
- Atorvastatin Calcium24 claims
- Amoxicillin-Clavulanate Potass19 claims
- Hydrocodone-Acetaminophen18 claims
- Amlodipine Besylate15 claims
- Prednisone11 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
- Sutter Bay Medical FoundationCastro Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rebecca M. Lekim among 3,099 hospitalist physician records in California
Rebecca M. Lekim, D.O is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 66% of them.
- NPI issued2015 · 66% of these records are older, 30% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2015 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
29 hospitalist physician records list a practice address in Castro Valley
They are 29 of the 999 NPPES records with a practice address in Castro Valley, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Castro Valley → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Arash Foroutani, M.D.Castro Valley, CA 945461346267309
- Alina Haq, M.D.Castro Valley, CA 945461669665436
- Fatma Khakoo, MDCastro Valley, CA 945461326045196
- Pei-Fen Lin, MDCastro Valley, CA 945461740429885
- Daisy Maron, M.D.Castro Valley, CA 945461275565954
- Summaiya Muhammad, M.DCastro Valley, CA 945461841454535
- Tianli Pan, MDCastro Valley, CA 945461578783791
- Sindhu Radhakrishnan, MDCastro Valley, CA 945461497833073
Common questions
What is Rebecca M. Lekim, D.O's NPI number?
Rebecca M. Lekim, D.O's National Provider Identifier (NPI) is 1780079509, issued on Mar 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca M. Lekim, D.O located?
The NPPES record lists a practice address at 20101 Lake Chabot RD, Castro Valley, CA, 94546. Phone: (510) 727-3256. Providers update this record themselves, so call before visiting.
How can I verify Rebecca M. Lekim, D.O's license?
NPPES lists California license number 20A15015, 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 Rebecca M. Lekim, D.O prescribe under Medicare Part D?
In 2024, Rebecca M. Lekim, D.O had 352 Medicare Part D claims for 125 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.