Ronald B. Wasserman, M.D.
Infectious Disease Physician · Walnut Creek, CA
Ronald B. Wasserman, M.D. is an infectious disease physician with a practice address in Walnut Creek, California, and NPI 1346268067, issued on Jul 18, 2006. Check the license (California G58454, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald B. Wasserman
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- G58454 CA
Self-reported in NPPES; status is on the state search - Practice location
- 365 Lennon LN, Walnut Creek, CA 94598
- Phone
- (925) 947-2334
- Enumerated
- Jul 18, 2006
- Record last updated
- Jan 30, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (925) 947-5889
- Medicaid ID
- 00G584540 CA
- Medicare enrollment
- Enrolled (PECOS I20080814000794); may accept Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1984
- 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 365 Lennon LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jorge Bernett, M.D.Infectious Disease Physician1366460081
- Peter Binstock, M.D.Infectious Disease Physician1487686838
- Devin Callister, M.D.Infectious Disease Physician1376856757
- Jennifer Cheng, D.O.Infectious Disease Physician1669791612
- Bela Chheda, M.D.Infectious Disease Physician1790717049
- Mira Lim, M.D.Ophthalmology Physician1194987628
Verify Ronald B. Wasserman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G58454Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average infectious disease physician in 2024
348 Medicare Part D claims for 59 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 41% of claims.
Most prescribed
- Biktarvy71 claims
- Entecavir29 claims
- Descovy22 claims
- Cephalexin19 claims
- Rifampin19 claims
- Vancomycin Hcl16 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): 97.6 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: $29.07
1 payment: food and beverage; the largest payer was Gilead Sciences, Inc. 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 2 group practices
- Bass Medical GroupAlamo, CA
- John Muir Trauma Physicians Billing ServiceWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald B. Wasserman among 1,119 infectious disease physician records in California
Ronald B. Wasserman, 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
- Graduated1984 · median 2003 among the 735 with a school on file
- Record last updated2008 · 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 Walnut Creek → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Jorge Bernett, M.D.Walnut Creek, CA 945981366460081
- Peter Binstock, M.D.Walnut Creek, CA 945981487686838
- Devin Callister, M.D.Walnut Creek, CA 945981376856757
- Jennifer Cheng, D.O.Walnut Creek, CA 945981669791612
- Bela Chheda, M.D.Walnut Creek, CA 945981790717049
- Timothy Jang, MDWalnut Creek, CA 945981801358775
- Bhavna Malik, MDWalnut Creek, CA 945981437231537
- Nimisha Mishra-Shukla, MDWalnut Creek, CA 945981487843942
Common questions
What is Ronald B. Wasserman, M.D.'s NPI number?
Ronald B. Wasserman, M.D.'s National Provider Identifier (NPI) is 1346268067, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald B. Wasserman, M.D. located?
The NPPES record lists a practice address at 365 Lennon LN, Walnut Creek, CA, 94598. Phone: (925) 947-2334. Providers update this record themselves, so call before visiting.
How can I verify Ronald B. Wasserman, M.D.'s license?
NPPES lists California license number G58454, 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 Ronald B. Wasserman, M.D. prescribe under Medicare Part D?
In 2024, Ronald B. Wasserman, M.D. had 348 Medicare Part D claims for 59 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Ronald B. Wasserman, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.6 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.