Mitchell Clyde Austin, MD
Rheumatology Physician · Newport Beach, CA
Mitchell Clyde Austin, MD is a rheumatology physician with a practice address in Newport Beach, California, and NPI 1669542601, issued on Nov 8, 2006. Check the license (California C36529, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mitchell Clyde Austin
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- C36529 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1441 Avocado Ave, Newport Beach, CA 92660
- Phone
- (949) 644-1881
- Enumerated
- Nov 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
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Verify Mitchell Clyde Austin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C36529Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average rheumatology physician in 2024
19 Medicare Part D claims, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
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.
Mitchell Clyde Austin among 926 rheumatology physician records in California
Mitchell Clyde Austin, MD is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2007 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Newport Beach → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Dawn Hnat, M.D.Newport Beach, CA 926601861571812
- Behzad Rahavi, M.D.Newport Beach, CA 926601811944069
- Jonathan Dau, M.D.Newport Beach, CA 926631467809608
- Kathy Karamlou, MDNewport Beach, CA 926631740209303
- Dan Mandel, MDNewport Beach, CA 926631578672309
- Kiana Taba, M.D.Newport Beach, CA 926631770995128
- Chay Bae, D.O.Laguna Hills, CA 926531861926982
- Sunil Gupta, D.O.Laguna Hills, CA 926531437310059
Common questions
What is Mitchell Clyde Austin, MD's NPI number?
Mitchell Clyde Austin, MD's National Provider Identifier (NPI) is 1669542601, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mitchell Clyde Austin, MD located?
The NPPES record lists a practice address at 1441 Avocado Ave, Newport Beach, CA, 92660. Phone: (949) 644-1881. Providers update this record themselves, so call before visiting.
How can I verify Mitchell Clyde Austin, MD's license?
NPPES lists California license number C36529, 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 Mitchell Clyde Austin, MD prescribe under Medicare Part D?
In 2024, Mitchell Clyde Austin, MD had 19 Medicare Part D claims; the average among rheumatology physician prescribers was 1,978. 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.