Allan Evan Sosin, MD
Internal Medicine Physician · Irvine, CA
Allan Evan Sosin, MD is an internal medicine physician with a practice address in Irvine, California, and NPI 1598789299, issued on Jul 26, 2006. Check the license (California G21912, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allan Evan Sosin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G21912 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4 Hughes Ste 175, Irvine, CA 92618
- Phone
- (949) 600-5100
- Enumerated
- Jul 26, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 600-5101
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Allan Evan Sosin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G21912Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,300 Medicare Part D claims for 203 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 28 claims were for opioids.
Most prescribed
- Levothyroxine Sodium58 claims
- Losartan Potassium58 claims
- Amlodipine Besylate53 claims
- Progesterone53 claims
- Atorvastatin Calcium38 claims
- Tamsulosin Hcl35 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.
Allan Evan Sosin among 17,696 internal medicine physician records in California
Allan Evan Sosin, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
155 internal medicine physician records list a practice address in Irvine
They are 155 of the 7,778 NPPES records with a practice address in Irvine, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Irvine → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Savitha Bharadwaj, M.D.Irvine, CA 926181760470926
- Juan Cabrera, M.D.Irvine, CA 926181447254792
- William Chen, M.D.Irvine, CA 926181881659142
- Subrato Ghosh, MDIrvine, CA 926181083607055
- Kambiz Karimi, M.D.Irvine, CA 926181184688475
- Sara Kim, M.D.Irvine, CA 926181912944166
- Brian Lo, MDIrvine, CA 926181073501565
- Emad Mikhail, MDIrvine, CA 926181376582957
Common questions
What is Allan Evan Sosin, MD's NPI number?
Allan Evan Sosin, MD's National Provider Identifier (NPI) is 1598789299, issued on Jul 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Allan Evan Sosin, MD located?
The NPPES record lists a practice address at 4 Hughes Ste 175, Irvine, CA, 92618. Phone: (949) 600-5100. Providers update this record themselves, so call before visiting.
How can I verify Allan Evan Sosin, MD's license?
NPPES lists California license number G21912, 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 Allan Evan Sosin, MD prescribe under Medicare Part D?
In 2024, Allan Evan Sosin, MD had 1,300 Medicare Part D claims for 203 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.