Physician Profile
Unclaimed ProfileAbout SYN
Based in Laguna Hills, CA, Gene Lloyd Syn, M.D. is listed in the NPI registry under colorectal surgery (proctology). Gene graduated from University of California, Geffen School of Medicine in 1992. Gene is also listed as specialising in colon & rectal surgery.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Syn specialise in?
Dr. Syn is a colorectal surgery (proctology) in Laguna Hills, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “COLORECTAL SURGERY (PROCTOLOGY)”.
NPI registry
Where is Dr. Syn located?
Dr. Syn is listed at 23961 CALLE DE LA MAGDALENA SUITE 231, Laguna Hills, CA 92653. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Syn's phone number?
The number on file is (949) 609-0500. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Syn's NPI number?
Dr. Syn's National Provider Identifier is 1487842720. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Syn go to medical school?
Dr. Syn attended University of California, Geffen School of Medicine, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Syn been practising?
Dr. Syn has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Syn do most often?
According to Medicare billing data, Dr. Syn performs procedures including diagnostic exam of rectum and lower large bowel using an endoscope, removal of external hemorrhoids by rubber banding and diagnostic exam of anus using an endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Syn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Syn. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (949) 609-0500
- Email not available
Practice Locations
23961 CALLE DE LA MAGDALENA SUITE 231
Laguna Hills, CA 92653
Procedures Most Often Billed to Medicare
504 services · 388 patients · 6 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Diagnostic exam of rectum and lower large bowel using an endoscope | Procedure | 45300 |
172 |
| Removal of external hemorrhoids by rubber banding | Procedure | 46221 |
114 |
| Diagnostic exam of anus using an endoscope | Procedure | 46600 |
22 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
12 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
158 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
26 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other colorectal surgery specialists in Laguna Hills 1
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 1992 at University of California, Geffen School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Diagnostic exam of rectum and lower large bowel using an endoscope 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.