Ronald Richard Matuszak, M.D.
Hospitalist Physician · Dublin, CA
Ronald Richard Matuszak, M.D. is a hospitalist physician with a practice address in Dublin, California, and NPI 1932496791, issued on Jun 30, 2011. Check the license (California A147969, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Ronald Richard Matuszak
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- A147969 CA
275622-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 4050 Dublin Blvd, Dublin, CA 94568
- Phone
- (925) 875-6100
- Enumerated
- Jun 30, 2011
- Record last updated
- Oct 13, 2022
- Medicare enrollment
- Enrolled (PECOS I20170726003853); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 4050 Dublin Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mimi Akaba, FNPNurse Practitioner1851472021
- Sana Ali, D.O.Family Medicine Physician1396199550
- Samira Aliabadi, MDPediatrics Physician1508957887
- Elizabeth Ancheta, MDPediatrics Physician1801933775
- Amardeep Angroola, M.D.Hospitalist Physician1821253568
- Carla Antypas, DOFamily Medicine Physician1063096113
Verify Ronald Richard Matuszak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A147969Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average hospitalist physician in 2024
68 Medicare Part D claims for 35 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationFremont, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Richard Matuszak among 3,099 hospitalist physician records in California
Ronald Richard Matuszak, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 47% of them.
- NPI issued2011 · 47% of these records are older, 49% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2011 · median 2010 among the 2,505 with a school on file
- Record last updated2022 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Dublin → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Michael Abdel-Malek, MDDublin, CA 945681952388852
- Amardeep Angroola, M.D.Dublin, CA 945681821253568
- Chandra Duggirala, MDDublin, CA 945681255592408
- Jaime Gonzalez Cardona, MDSaint Helena, CA 945741891324315
- Alexa Henderson, M.D.Saint Helena, CA 945741700050911
- David Kim, M.D.Saint Helena, CA 945741922020221
- Sanjay Muttreja, MDSaint Helena, CA 945741447201173
- Gordon Sweeney, M.D.Saint Helena, CA 945741194794776
Common questions
What is Ronald Richard Matuszak, M.D.'s NPI number?
Ronald Richard Matuszak, M.D.'s National Provider Identifier (NPI) is 1932496791, issued on Jun 30, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Richard Matuszak, M.D. located?
The NPPES record lists a practice address at 4050 Dublin Blvd, Dublin, CA, 94568. Phone: (925) 875-6100. Providers update this record themselves, so call before visiting.
How can I verify Ronald Richard Matuszak, M.D.'s license?
NPPES lists California license number A147969, 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 Richard Matuszak, M.D. prescribe under Medicare Part D?
In 2024, Ronald Richard Matuszak, M.D. had 68 Medicare Part D claims for 35 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.