Rene Merced Ramirez, M.D.
Surgery Physician · San Leandro, CA
Rene Merced Ramirez, M.D. is a surgery physician with a practice address in San Leandro, California, and NPI 1619146388, issued on Feb 26, 2008. Check the license (California A83626, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Rene Merced Ramirez
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A83626 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Merced St, San Leandro, CA 94577
- Phone
- (510) 454-1000
- Enumerated
- Feb 26, 2008
- Record last updated
- Mar 10, 2022
- Medicare enrollment
- Enrolled (PECOS I20080611000632); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 2001
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 2500 Merced St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kristi Adachi, PHARMDPharmacist1396456737
- Mary Grace Aguayo, CRTCertified Respiratory Therapist1467923730
- Jatinder AhluwaliaPharmacist1508391483
Verify Rene Merced Ramirez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A83626Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% more Medicare Part D claims than the average surgery physician in 2024
166 Medicare Part D claims for 65 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 48 claims were for opioids.
Most prescribed
- Oxycodone Hcl47 claims
- Ondansetron Odt44 claims
- Ibuprofen34 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
- Permanente Medical Group IncSan Leandro, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rene Merced Ramirez among 3,118 surgery physician records in California
Rene Merced Ramirez, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 58% of them.
- NPI issued2008 · 58% of these records are older, 37% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2001 · median 2003 among the 1,901 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in San Leandro → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Jhoanne Bautista, M.D. PH.D.San Leandro, CA 945771831517358
- Louis Ivey, M.D.San Leandro, CA 945771932287794
- Todd Olsen, MDSan Leandro, CA 945771841378692
- Michael Peterson, M.D.San Leandro, CA 945771255419024
- Faye Yu, M.D.San Leandro, CA 945771508251372
- Garfield Bryant, M.D.San Leandro, CA 945781952402109
- James Bryant, MDSan Leandro, CA 945781750454708
- Chuc Dang, M.D.San Leandro, CA 945781841374675
Common questions
What is Rene Merced Ramirez, M.D.'s NPI number?
Rene Merced Ramirez, M.D.'s National Provider Identifier (NPI) is 1619146388, issued on Feb 26, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Rene Merced Ramirez, M.D. located?
The NPPES record lists a practice address at 2500 Merced St, San Leandro, CA, 94577. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify Rene Merced Ramirez, M.D.'s license?
NPPES lists California license number A83626, 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 Rene Merced Ramirez, M.D. prescribe under Medicare Part D?
In 2024, Rene Merced Ramirez, M.D. had 166 Medicare Part D claims for 65 beneficiaries; the average among surgery physician prescribers was 147. 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.