Dr. Ronald B. Wasserman, MD

  • Walnut Creek, CA
  • Infectious disease specialist
NPI1346268067PAC ID9133126808
Medicare services, 2024
1,400
Medicare patients, 2024
542
Part D claims, 2024
348
Publications
1
MIPS score, 2024
95
Practice address
1601 Ygnacio Valley Rd, Walnut Creek, CA 94598
Practice phone
Call (925) 939-3000
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

John Muir Medical Center, Walnut Creek

Hospital · Walnut Creek, California

See all 10 affiliations

Find Dr. Wasserman's professional email, personal email and mobile number

Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.

View contacts for free

Dr. Ronald B. Wasserman is an infectious disease specialist in Walnut Creek, California

Dr. Wasserman practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health.

Dr. Wasserman's NPI, 1346268067, was assigned on July 18, 2006. Dr. Wasserman graduated from UC San Diego School of Medicine in 1984. Dr. Wasserman's California license number on file is G58454.

NPI and contact details
Medicare PAC ID
9133126808
NPI enumeration date
July 18, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(925) 939-3000
Professional email
Get email
Personal email
Get email
Mobile number
Get number
Sex
Male
Estimated age
68
Medical school graduation
1984

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Ronald B. Wasserman practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California

Dr. Wasserman's primary practice is John Muir Medical Center, Walnut Creek, at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598 in Contra Costa County. The practice phone is (925) 939-3000.

Source: Dmand AI Affiliation Data

Dr. Ronald B. Wasserman is affiliated with 6 sites of care and 4 medical groups

Dr. Wasserman's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dr. Wasserman is also affiliated with Concord Medical Center. The medical group on file is BASS Medical Group. Dmand AI also links Dr. Wasserman to 1 more hospital, 3 group practices and clinics and 3 medical groups, each named with a free account.

See all 10 affiliations for Dr. Wasserman

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Ronald B. Wasserman's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Wasserman practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
John Muir Medical Center, Walnut CreekAvailable with a free account
+5 more sites and 3 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Wasserman practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across John Muir Health and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Ronald B. Wasserman is one of 1,054 infectious disease specialists in California

Infectious disease is Dr. Wasserman's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Wasserman is board certified in internal medicine by the American Board of Internal Medicine. Dr. Wasserman has a license on file in California.

Specialties and state licenses

  • Infectious disease, CaliforniaPrimaryLicense G58454 · 1986 to 2025 · taxonomy 207RI0200X

Clinical focus

Dmand AI lists acute skin infection, cold sores or genital herpes, endocarditis, hiv/aids, joint or bone infection and pneumonia among the conditions Dr. Wasserman treats.

Infectious disease specialists near Dr. Wasserman

Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Ronald B. Wasserman billed Medicare for 1,400 services in 2024

CMS data shows 1,400 Medicare services from Dr. Wasserman across 8 procedure codes in 2024, for 542 Medicare patients. Medicare paid $178,579 for them.

Medicare services, 20241,400
Medicare patients542
Paid by Medicare$178,579
Procedure codes8

Dr. Wasserman's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 1,1042024: 1,40027%
Tests and treatments
2023: 1282024: 0100%

Where Dr. Wasserman's Medicare services took place, 2024

  • In an office67848%
  • In a facility72252%

Dr. Wasserman compared with the California median for infectious disease specialists, 2024

  • Dr. Wasserman
  • California median
Medicare services
1,400vs 4293.3 times
Medicare patients
542vs 1803.0 times
Part D claims
251vs 1192.1 times

Medians across 930 infectious disease specialists in California with Dmand AI profiles that report each measure.

Dr. Wasserman's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Wasserman

Need commercial claims for Dr. Wasserman?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Wasserman and other infectious disease specialists in California.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Ronald B. Wasserman treated 542 Medicare patients in 2024, average age 75

CMS counts 542 Medicare patients who saw Dr. Wasserman in 2024. The largest group is 65 to 74, with 191 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 40% are also on Medicaid. Their average risk score is 3.15, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Wasserman's median patient age at 63, with 49% women.

Medicare patients, 2024542
Average age75
Average risk score3.15
Also on Medicaid40%

Dr. Wasserman's Medicare patients by age, 2024

Dr. Wasserman's Medicare patients by sex, 2024

  • Women25246%
  • Men29054%

Chronic conditions among Dr. Wasserman's Medicare patients, 2024

  1. High blood pressure75%
  2. High cholesterol75%
  3. Arthritis55%
  4. Chronic kidney disease51%
  5. Diabetes49%
  6. Mood disorders41%
  7. Heart failure39%
  8. Atrial fibrillation38%

Share of Medicare patients with each condition. A patient can have several.

Dr. Wasserman's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 63

Patient panel by sex, all payers

  • Women49%
  • Men48%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Ronald B. Wasserman wrote 348 Medicare Part D claims in 2024

In 2024, Dr. Wasserman wrote 348 Medicare Part D claims for 59 patients. 59% of them were for generic drugs. CMS names the drug for 251 of them, across 12 drugs with 11 or more claims each, at $447,691 in total drug cost. In 2023, CMS named 270 claims across 13 drugs.

Part D claims, 2024348
Drugs named by CMS12
Total drug cost$447,691
Part D patients59

Dr. Wasserman's Part D claims by kind of drug, 2024

  • Generic206 claims59%
  • Brand-name142 claims41%

Dr. Wasserman's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Wasserman's Part D claims, 2024

  • Antibiotics31%108 of 348 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 2702024: 2517%

Drugs named by CMS: 12 in 2024, 13 in 2023.

See all prescribing by Dr. Wasserman

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

Dr. Ronald B. Wasserman scored 95 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Wasserman for performance year 2024, reported individually. Dr. Wasserman accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Wasserman as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Dr. Wasserman's MIPS scores, performance year 2024

  • 95of 100Final score
  • 71.1of 100Quality
  • 99of 100Promoting Interoperability
  • 40of 100Improvement Activities

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026

For MedTech and pharma teams

Find infectious disease specialists like Dr. Wasserman by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Ronald B. Wasserman has 1 publication on record

Dmand AI links 1 paper to Dr. Wasserman. Dr. Wasserman's most frequent co-authors are Clive Albert, MD, Myron H. Brand, MD and Robert Stephen Brown, MD.

Papers1

Dr. Wasserman's most frequent co-authors

Recent publications by Dr. Wasserman

See all 1 publications and co-authors

See who Dr. Wasserman researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Wasserman works with, so you can find a warm path to the right infectious disease specialists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Ronald B. Wasserman received $3,418 in industry payments from 2016 to 2024

CMS Open Payments shows 36 general payments to Dr. Wasserman from 10 drug and device companies from 2016 to 2024. Consulting fees make up the largest share, 40% of the total. Ferring Pharmaceuticals Inc. paid the most, $1,380.

General payments to Dr. Wasserman by program year, 2016 to 2024

General payments to Dr. Wasserman by kind, 2016 to 2024

$3.4Kin total
  • Consulting fees$1,38040%
  • Food and beverage$1,30638%
  • Speaker and faculty fees$55516%
  • Education$1765%

Companies that paid Dr. Wasserman the most, 2016 to 2024

Share is of all general payments to this clinician.

See all payments to Dr. Wasserman

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Ronald B. Wasserman graduated from UC San Diego School of Medicine

Dr. Wasserman graduated from UC San Diego School of Medicine in 1984.

  1. Medical schoolUC San Diego School of Medicine
  2. Board certified in internal medicineAmerican Board of Internal Medicine

Source: Dmand AI Professional Profile Data

Dr. Ronald B. Wasserman accepts plans from 8 insurance carriers

Dr. Wasserman is in network with 8 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Elevance
  • Aetna
  • Blue Cross Blue Shield of Massachusetts
  • HCSC
  • Humana
  • Regence Health Plans
  • CMS Medicare
  • Molina

Plan types Dr. Wasserman accepts, by number of carriers

  1. Medicare8
  2. PPO6
  3. EPO2
  4. HMO2
  5. POS2
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Ronald B. Wasserman's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Ronald B. Wasserman

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Dr. Ronald B. Wasserman's NPI number?

Dr. Ronald B. Wasserman's NPI number is 1346268067. It was assigned on July 18, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Ronald B. Wasserman?

Dr. Ronald B. Wasserman is an infectious disease specialist in Walnut Creek, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).

Where does Dr. Ronald B. Wasserman practice?

Dr. Wasserman practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. Dr. Wasserman's primary practice is John Muir Medical Center, Walnut Creek in Walnut Creek, California, part of John Muir Health. Dmand AI also links Dr. Wasserman to 1 hospital, 3 group practices and clinics and 3 medical groups.

What is Dr. Ronald B. Wasserman's office phone number?

The practice phone on file for Dr. Wasserman is (925) 939-3000.

What is Dr. Ronald B. Wasserman's medical license number?

Dr. Wasserman's California license number on file is G58454.

Which hospitals is Dr. Ronald B. Wasserman affiliated with?

Dr. Wasserman practices at John Muir Medical Center, Walnut Creek in Walnut Creek, California. Dr. Wasserman is also affiliated with Concord Medical Center. Dmand AI links Dr. Wasserman to 1 more hospital.

What medical group is Dr. Ronald B. Wasserman part of?

Dr. Wasserman is linked to BASS Medical Group. Dmand AI links Dr. Wasserman to 3 more medical groups.

Does Dr. Ronald B. Wasserman accept Medicare?

Yes. CMS data shows Dr. Wasserman billed Medicare for 1,400 services in 2024, and Dr. Wasserman accepts Medicare assignment.

Does Dr. Ronald B. Wasserman offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Wasserman as offering telehealth services.

What is Dr. Ronald B. Wasserman's MIPS score?

Dr. Wasserman's MIPS final score for performance year 2024 is 95 out of 100, reported individually.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Ronald B. Wasserman see?

CMS counts 542 Medicare patients who saw Dr. Wasserman in 2024, with an average age of 75.

Is Dr. Ronald B. Wasserman board certified?

Yes. Dr. Wasserman is board certified in internal medicine by the American Board of Internal Medicine.

What services does Dr. Ronald B. Wasserman bill to Medicare?

In 2024, Dr. Wasserman's most billed Medicare services were office visit, established patient (99215), hospital inpatient care (99232) and hospital inpatient care (99233).

Where did Dr. Ronald B. Wasserman go to medical school?

Dr. Wasserman graduated from UC San Diego School of Medicine in 1984.

What drugs does Dr. Ronald B. Wasserman prescribe most?

In 2024 Medicare Part D data, Dr. Wasserman's most prescribed drugs by claims were Biktarvy, Entecavir and Descovy.

Has Dr. Ronald B. Wasserman received payments from drug or device companies?

CMS Open Payments shows $3,418 in general payments to Dr. Wasserman from 10 companies from 2016 to 2024. The largest total came from Ferring Pharmaceuticals Inc.

How long has Dr. Ronald B. Wasserman been practicing?

Dr. Wasserman graduated from medical school in 1984, 42 years ago.

Does Dr. Ronald B. Wasserman do research?

Dmand AI links 1 publication to Dr. Wasserman.

Who does Dr. Ronald B. Wasserman publish with?

Dr. Wasserman's most frequent co-authors are Clive Albert, MD (1 shared paper), Myron H. Brand, MD (1 shared paper) and Robert Stephen Brown, MD (1 shared paper).

What insurance does Dr. Ronald B. Wasserman accept?

Dr. Wasserman is in network with 8 carriers, including Elevance, Aetna and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

Selling to infectious disease practices?

See infectious disease specialists in California by site of care and group

Find the practices, groups and hospitals they work with, and the right people to contact at each.

  • 30 days free
  • Self-serve
  • No credit card

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)