Sahar E. Lashin, M.D.
Internal Medicine Physician · Lake Forest, CA
Sahar E. Lashin, M.D. is an internal medicine physician with a practice address in Lake Forest, California, and NPI 1598053894, issued on Jul 20, 2011. Check the license (California A127149, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sahar E. Lashin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A127149 CA
4301099457 MI
Self-reported in NPPES; status is on the state search - Practice location
- 22972 EL Toro RD # C3, Lake Forest, CA 92630
- Phone
- (949) 749-1049
- Enumerated
- Jul 20, 2011
- Record last updated
- Jan 16, 2026
- Fax
- (949) 749-1048
- Medicare enrollment
- Enrolled (PECOS I20150217000140); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Sahar E. Lashin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A127149Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average internal medicine physician in 2024
396 Medicare Part D claims for 221 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 11 claims were for opioids.
Most prescribed
- Atorvastatin Calcium30 claims
- Levothyroxine Sodium16 claims
- Metformin Hcl16 claims
- Rosuvastatin Calcium16 claims
- Amlodipine Besylate14 claims
- Omeprazole13 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.
Industry payments in 2024: $24.82
1 payment: food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Cedars-Sinai Medical Care FoundationBeverly Hills, CA
- Memorialcare Medical FoundationFountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sahar E. Lashin among 17,696 internal medicine physician records in California
Sahar E. Lashin, M.D. 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 2011, is newer than 66% of them.
- NPI issued2011 · 66% of these records are older, 32% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 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).
Internal Medicine Physician providers in California
There are 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Lake Forest → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Madineth Muy, M.D.Lake Forest, CA 926301992807721
- Suma Oommen, M.D.Lake Forest, CA 926301063431203
- Nicole Sandler, NPLake Forest, CA 926301346933165
- Usha Idnani, M.D.Dana Point, CA 926291861446056
- Rajiv Pathak, M.D.Dana Point, CA 926291265528111
- Laurence Wellikson, M.D.Dana Point, CA 926291770858649
- Adnan Akhtar, D.O.Costa Mesa, CA 926271215126396
- Matthew Boone, MDCosta Mesa, CA 926271487685095
Common questions
What is Sahar E. Lashin, M.D.'s NPI number?
Sahar E. Lashin, M.D.'s National Provider Identifier (NPI) is 1598053894, issued on Jul 20, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Sahar E. Lashin, M.D. located?
The NPPES record lists a practice address at 22972 EL Toro RD # C3, Lake Forest, CA, 92630. Phone: (949) 749-1049. Providers update this record themselves, so call before visiting.
How can I verify Sahar E. Lashin, M.D.'s license?
NPPES lists California license number A127149, 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 Sahar E. Lashin, M.D. prescribe under Medicare Part D?
In 2024, Sahar E. Lashin, M.D. had 396 Medicare Part D claims for 221 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.