Alfredo R. Lopez, MD
Hematology & Oncology Physician · San Francisco, CA
Alfredo R. Lopez, MD is a hematology & oncology physician with a practice address in San Francisco, California, and NPI 1033297668, issued on Nov 1, 2006. Check the license (California G36323, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Alfredo R. Lopez
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G36323 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2200 Ofarrell St, San Francisco, CA 94115
- Phone
- (415) 833-2000
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G363230 CA
- Medicare enrollment
- Enrolled (PECOS I20101201001406); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1976
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 2200 Ofarrell St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jonathan Alexander, MDHospitalist Physician1811075450
- Gabull Alhadhrami, NPAcute Care Nurse Practitioner1427124098
- Bryan Andrews, MDAnesthesiology Physician1609954239
Verify Alfredo R. Lopez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G36323Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,115 Medicare Part D claims for 169 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 34% of claims. 77 claims were for opioids.
Most prescribed
- Lenalidomide216 claims
- Tagrisso73 claims
- Brukinsa70 claims
- Ondansetron Hcl52 claims
- Imbruvica45 claims
- Prednisone40 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 Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alfredo R. Lopez among 1,583 hematology & oncology physician records in California
Alfredo R. Lopez, MD is one of 1,583 hematology & oncology physician records with a practice address in California. 83% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1976 · median 2003 among the 1,124 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in San Francisco → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Caroline Behler, M.D., M.S.San Francisco, CA 941151518155357
- Stephanie Jeske, MD, MSCSan Francisco, CA 941151194942813
- Ann Lanzerotti, M.D.San Francisco, CA 941151104227826
- Francisco Martinez, MDSan Francisco, CA 941151649769225
- Amy Nelson, MDSan Francisco, CA 941151265510853
- Nayha Tahir, MDSan Francisco, CA 941151649733007
- Derrick Tao, MDSan Francisco, CA 941151881190254
- Jahan Tavakoli, M.D.San Francisco, CA 941151942214887
Common questions
What is Alfredo R. Lopez, MD's NPI number?
Alfredo R. Lopez, MD's National Provider Identifier (NPI) is 1033297668, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alfredo R. Lopez, MD located?
The NPPES record lists a practice address at 2200 Ofarrell St, San Francisco, CA, 94115. Phone: (415) 833-2000. Providers update this record themselves, so call before visiting.
How can I verify Alfredo R. Lopez, MD's license?
NPPES lists California license number G36323, 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 Alfredo R. Lopez, MD prescribe under Medicare Part D?
In 2024, Alfredo R. Lopez, MD had 1,115 Medicare Part D claims for 169 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.