Richard Michael Dwyer, M.D.
Gastroenterology Physician · Los Angeles, CA
Richard Michael Dwyer, M.D. is a gastroenterology physician with a practice address in Los Angeles, California, and NPI 1366449969, issued on Jun 28, 2005. Check the license (California C31641, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Richard Michael Dwyer
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- C31641 CA
Self-reported in NPPES; status is on the state search - Practice location
- 201 S Alvarado St, Los Angeles, CA 90057
- Phone
- (213) 483-2470
- Enumerated
- Jun 28, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (213) 483-0476
- Medicaid IDs
- 00C316410 CA
GR009250 CA
GR0009251 CA - Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 201 S Alvarado St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Randal Arase, MDSurgery Physician1225011620
- Myo Aung, M.D.Specialist1255366837
- Anne Celona, PACPhysician Assistant1629199427
- John Chalison, MDPulmonary Disease Physician1215977780
- Daniel Chang, MDNeurology Physician1194761841
- Clifford Harris, M.D.Cardiovascular Disease Physician1942226832
Verify Richard Michael Dwyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C31641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average gastroenterology physician in 2024
56 Medicare Part D claims, against an average of 811 among the 16,445 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.
Richard Michael Dwyer among 2,140 gastroenterology physician records in California
Richard Michael Dwyer, M.D. is one of 2,140 gastroenterology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Los Angeles → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Barry Morguelan, M.D. INC.Los Angeles, CA 900571225010663
- Ioannis Giannikopoulos, M.D.Los Angeles, CA 900591275643413
- Thomas Kun, M.D.Los Angeles, CA 900641508841321
- Rahul Chhablani, MDLos Angeles, CA 900491376799395
- Marvin Perer, M.D.Los Angeles, CA 900491508008301
- Rashmi Advani, M.D.West Hollywood, CA 900481902253958
- Khalid Al Shamousi, MD, FRCPCLos Angeles, CA 900481386299972
- Yin Chan, MDLos Angeles, CA 900481528735065
Common questions
What is Richard Michael Dwyer, M.D.'s NPI number?
Richard Michael Dwyer, M.D.'s National Provider Identifier (NPI) is 1366449969, issued on Jun 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Richard Michael Dwyer, M.D. located?
The NPPES record lists a practice address at 201 S Alvarado St, Los Angeles, CA, 90057. Phone: (213) 483-2470. Providers update this record themselves, so call before visiting.
How can I verify Richard Michael Dwyer, M.D.'s license?
NPPES lists California license number C31641, 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 Richard Michael Dwyer, M.D. prescribe under Medicare Part D?
In 2024, Richard Michael Dwyer, M.D. had 56 Medicare Part D claims; the average among gastroenterology physician prescribers was 811. 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.