Joseph Barouk Marzouk, M.D.
Infectious Disease Physician · Oakland, CA
Joseph Barouk Marzouk, M.D. is an infectious disease physician with a practice address in Oakland, California, and NPI 1174636393, issued on Aug 15, 2006. Check the license (California G41722, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph Barouk Marzouk
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- G41722 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4096 Piedmont Ave, Oakland, CA 94611
- Phone
- (510) 874-1415
- Enumerated
- Aug 15, 2006
- Record last updated
- Sep 22, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100420000074); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1976
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 4096 Piedmont Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Carle, OTR/LOccupational Therapist1326431917
- Cari Donovan, LCSWClinical Social Worker1962735522
- Mark Lee, M.D.Infectious Disease Physician1184708828
- Marcella Spence, MSStudent in an Organized Health Care Education/Training Program1801975180
- Anne Stanley, RBT INTERNBehavior Technician1598124935
Verify Joseph Barouk Marzouk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G41722Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average infectious disease physician in 2024
112 Medicare Part D claims for 11 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 90% of claims.
Most prescribed
- Biktarvy72 claims
- Juluca12 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 91 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Alameda Health SystemOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Barouk Marzouk among 1,119 infectious disease physician records in California
Joseph Barouk Marzouk, M.D. is one of 1,119 infectious disease 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 54% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1976 · median 2003 among the 735 with a school on file
- Record last updated2015 · 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 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Oakland → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Elizabeth Anderson, MDOakland, CA 946111922170760
- Mark Lee, M.D.Oakland, CA 946111184708828
- Alex PelliccioneOakland, CA 946111407315708
- Roger Phelps, M.D.Piedmont, CA 946111629188990
- Sally Slome, MDOakland, CA 946111013095801
- Angela Talley, MDOakland, CA 946121679683619
- Nupur Gupta, D.O.Oakland, CA 946091417375940
- Yenjean Hwang, M.D.Oakland, CA 946091194744557
Common questions
What is Joseph Barouk Marzouk, M.D.'s NPI number?
Joseph Barouk Marzouk, M.D.'s National Provider Identifier (NPI) is 1174636393, issued on Aug 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Barouk Marzouk, M.D. located?
The NPPES record lists a practice address at 4096 Piedmont Ave, Oakland, CA, 94611. Phone: (510) 874-1415. Providers update this record themselves, so call before visiting.
How can I verify Joseph Barouk Marzouk, M.D.'s license?
NPPES lists California license number G41722, 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 Joseph Barouk Marzouk, M.D. prescribe under Medicare Part D?
In 2024, Joseph Barouk Marzouk, M.D. had 112 Medicare Part D claims for 11 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Joseph Barouk Marzouk, M.D.'s MIPS final score?
The 2023 MIPS final score is 91 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.