Ronald Wasserman, M.D.
NPI 1346268067 · Infectious Disease Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Wasserman, M.D. is a Infectious Disease Physician provider in Walnut Creek, CA (NPI 1346268067).
Provider details
- NPI number
- 1346268067
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G58454 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,400 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 483 | $219 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 325 | $90 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 285 | $135 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 145 | $157 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 74 | $197 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 71 |
| Entecavir | 29 |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 22 |
| Cephalexin | 19 |
| Rifampin | 19 |
| Vancomycin Hcl | 16 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 15 |
| Cefpodoxime Proxetil | 14 |
| Elviteg/Cob/Emtri/Tenof Alafenbrand: Genvoya | 12 |
| Abacavir/Dolutegravir/Lamivudi |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-18
- Last updated
- 2008-01-30
Frequently asked questions
- What is Ronald Wasserman's NPI number?
- Ronald Wasserman's National Provider Identifier (NPI) is 1346268067, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Wasserman's specialty?
- Ronald Wasserman is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Wasserman located?
- Ronald Wasserman's practice location on file with NPPES is 365 Lennon Ln, Walnut Creek, CA 94598-5910.
- What is Ronald Wasserman's phone number?
- The practice phone number listed in the NPPES registry for Ronald Wasserman is (925) 947-2334.
- Does Ronald Wasserman accept Medicare?
- Ronald Wasserman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Wasserman's NPI active?
- Yes — Ronald Wasserman's NPI (1346268067) is active in the NPPES registry as of the last update on 2008-01-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.