Robert Zimmerman, M.D.
Infectious Disease Physician · Sacramento, CA
Robert Zimmerman, M.D. is an infectious disease physician with a practice address in Sacramento, California, and NPI 1619294352, issued on Apr 20, 2010. Check the license (California A118958, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Zimmerman
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A118958 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3000 Q Street, Sacramento, CA 95816
- Phone
- (916) 733-3401
- Enumerated
- Apr 20, 2010
- Record last updated
- Oct 14, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (916) 733-5374
- Medicare enrollment
- Enrolled (PECOS I20150831001264); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 in California → Look up another NPI →
Also registered at 3000 Q Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Robert Zimmerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A118958Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2% fewer Medicare Part D claims than the average infectious disease physician in 2024
677 Medicare Part D claims for 84 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
Most prescribed
- Ceftriaxone42 claims
- Biktarvy36 claims
- Azithromycin31 claims
- Rifampin28 claims
- Vancomycin Hcl28 claims
- Triumeq25 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 MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $470.64
19 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 3,895 providers of this specialty with any payment received $4,362.19 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Dignity Health Medical FoundationFolsom, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Robert Zimmerman among 1,119 infectious disease physician records in California
Robert Zimmerman, 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 2010, is newer than 69% of them.
- NPI issued2010 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2010 · 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 Sacramento → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Nahel Kapadia, MDSacramento, CA 958161861050494
- Brett Laurence, MDSacramento, CA 958161356506372
- Randy McCreery, MDSacramento, CA 958161528440971
- Vinod Trivedi, MDSacramento, CA 958161003001645
- Natascha Tuznik, DOSacramento, CA 958161386842631
- Stuart Cohen, M.D.Sacramento, CA 958171043290455
- Neil Flynn, M.D., M.P.H., ABPMSacramento, CA 958171154301935
- Vera Go, M.D.Sacramento, CA 958171225012750
Common questions
What is Robert Zimmerman, M.D.'s NPI number?
Robert Zimmerman, M.D.'s National Provider Identifier (NPI) is 1619294352, issued on Apr 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Robert Zimmerman, M.D. located?
The NPPES record lists a practice address at 3000 Q Street, Sacramento, CA, 95816. Phone: (916) 733-3401. Providers update this record themselves, so call before visiting.
How can I verify Robert Zimmerman, M.D.'s license?
NPPES lists California license number A118958, 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 Robert Zimmerman, M.D. prescribe under Medicare Part D?
In 2024, Robert Zimmerman, M.D. had 677 Medicare Part D claims for 84 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Robert Zimmerman, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.