Gene Lloyd Syn, M.D.
Colon & Rectal Surgery Physician · Laguna Hills, CA
Gene Lloyd Syn, M.D. is a colon & rectal surgery physician with a practice address in Laguna Hills, California, and NPI 1487842720, issued on Oct 11, 2007. Check the license (California G79692, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gene Lloyd Syn
- Credential
- M.D.
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- G79692 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23961 Calle DE LA Magdalena, Laguna Hills, CA 92653
- Phone
- (949) 609-0500
- Enumerated
- Oct 11, 2007
- Record last updated
- Oct 12, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 609-0504
- Medicare enrollment
- Enrolled (PECOS I20111220000568); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 198 in California → Look up another NPI →
Also registered at 23961 Calle DE LA Magdalena
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Esrafil Abedi, MDOtolaryngology/Facial Plastic Surgery Physician1093794604
- Kanita Allen, PSYDClinical Psychologist1972826790
- Robin Andrews, DPMFoot Surgery Podiatrist1043345416
- Marco Artiano, DPTOrthopedic Physical Therapist1134356447
- Valdemar Ascencio, M.D.Specialist1962569384
- Jonathan Auth, M.D.Pediatrics Physician1871639823
Verify Gene Lloyd Syn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79692Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average colon & rectal surgery physician in 2024
210 Medicare Part D claims for 103 beneficiaries, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D. 43 claims were for opioids.
Most prescribed
- Hydrocortisone81 claims
- Oxycodone-Acetaminophen41 claims
- Procto-Med Hc38 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.
The MIPS final score for 2023 (Medicare payment program): 94.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $233.20
17 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. The 1,524 providers of this specialty with any payment received $3,468.16 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 one group practice
- Minimally Invasive Medical GroupMission Viejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gene Lloyd Syn among 198 colon & rectal surgery physician records in California
Gene Lloyd Syn, M.D. is one of 198 colon & rectal surgery physician records with a practice address in California. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 40% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1992 · median 2002 among the 149 with a school on file
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Colon & Rectal Surgery Physician providers in California
There are 198 colon & rectal surgery physician records in California.
All 198 in California → Every provider in Laguna Hills → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Robert Belt, MDLaguna Beach, CA 926511023223849
- Theodore Coutsoftides, MDHuntington Beach, CA 926491144411414
- Kenneth Aaron, M.D.Newport Beach, CA 926601689809162
- Mark Hachigian, MDNewport Beach, CA 926601881087476
- Daniel Ng, MDNewport Beach, CA 926631265523351
- Babak Rad, M.D.Newport Beach, CA 926631821013046
- Elizabeth Arcila, M.D.Irvine, CA 926181093056780
- Carlos Esparza MonzaviIrvine, CA 926181750762001
Common questions
What is Gene Lloyd Syn, M.D.'s NPI number?
Gene Lloyd Syn, M.D.'s National Provider Identifier (NPI) is 1487842720, issued on Oct 11, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gene Lloyd Syn, M.D. located?
The NPPES record lists a practice address at 23961 Calle DE LA Magdalena, Laguna Hills, CA, 92653. Phone: (949) 609-0500. Providers update this record themselves, so call before visiting.
How can I verify Gene Lloyd Syn, M.D.'s license?
NPPES lists California license number G79692, 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 Gene Lloyd Syn, M.D. prescribe under Medicare Part D?
In 2024, Gene Lloyd Syn, M.D. had 210 Medicare Part D claims for 103 beneficiaries; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
What is Gene Lloyd Syn, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.5 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.