Ronald Matuszak, M.D.
NPI 1932496791 · Hospitalist Physician · Dublin, CA
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Matuszak, M.D. is a Hospitalist Physician provider in Dublin, CA (NPI 1932496791).
Provider details
- NPI number
- 1932496791
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 275622-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
247 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 140 | $131 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 55 | $192 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 52 | $129 |
Typical Medicare-allowed amounts for these services range $129–$192 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 2000 Mowry AveFremont, CA 94538-1746Phone: (510) 797-1111
Registry dates
- Enumerated
- 2011-06-30
- Last updated
- 2022-10-13
- Certified
- 2022-10-13
Frequently asked questions
- What is Ronald Matuszak's NPI number?
- Ronald Matuszak's National Provider Identifier (NPI) is 1932496791, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Matuszak's specialty?
- Ronald Matuszak is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Matuszak located?
- Ronald Matuszak's practice location on file with NPPES is 4050 Dublin Blvd, Dublin, CA 94568-3112.
- What is Ronald Matuszak's phone number?
- The practice phone number listed in the NPPES registry for Ronald Matuszak is (925) 875-6100.
- Does Ronald Matuszak accept Medicare?
- Ronald Matuszak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Matuszak's NPI active?
- Yes — Ronald Matuszak's NPI (1932496791) is active in the NPPES registry as of the last update on 2022-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.