Doctor profile · Federal record
Dr. Theodore Sy, MD
Gastroenterology Physician (CMS: Gastroenterology) · Internal Medicine Physician · Laguna Hills, CA
- NPI 1003865627
- Accepts Medicare
- MIPS 75.3 / 100 · 2023
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
26538 Moulton Pkwy Ste 38E
Laguna Hills, CA 92653
(949) 448-0656
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- February 7, 2022
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A90266
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1003865627. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
238
Distinct HCPCS
8
Medicare allowed
$28,699
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
G0500 |
Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 52 | 51 | $6 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 50 | 50 | $266 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 26 | 26 | $170 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 26 | 23 | $135 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 25 | 25 | $124 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 21 | 20 | $127 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 20 | 20 | $66 | |
36415 |
Insertion of needle into vein for collection of blood sample | 18 | 13 | $6 |
In context: peer comparison
Among 5 peers in this city , average services per provider: 69. This provider delivers 3.4× the peer median.Open Payments
Industry payments received
All-time total
$1,432
Transactions
58
Manufacturers
13
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ABBVIE INC. | 28 | $750.39 | |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | 7 | $169.50 | |
| Janssen Biotech, Inc. | 5 | $105.29 | |
| Lilly USA, LLC | 4 | $86.28 | |
| GENZYME CORPORATION | 3 | $76.98 | |
| Celltrion USA Inc. | 2 | $44.33 | |
| Gilead Sciences, Inc. | 2 | $43.72 | |
| Madrigal Pharmaceuticals | 1 | $36.84 | |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $33.14 | |
| Regeneron Healthcare Solutions, Inc. | 1 | $23.14 | |
| Braintree Laboratories, Inc. | 1 | $22.35 | |
| VIVUS LLC | 1 | $21.38 | |
| AIMMUNE THERAPEUTICS, INC. | 1 | $19.08 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
756
Patients
411
Total drug cost
$979,833
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 126 | 60 | $1,829 |
| Suprep (Sodium, Potassium,mag Sulfates) | Brand | 124 | 123 | $14,311 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates) | Brand | 102 | 101 | $7,373 |
| Creon (Lipase/Protease/Amylase) | Brand | 85 | 32 | $142,840 |
| Pantoprazole Sodium | Generic | 66 | 30 | $978 |
| Famotidine | Generic | 49 | 24 | $1,028 |
| Mesalamine | Generic | 41 | 0 | $25,156 |
| Linzess (Linaclotide) | Brand | 31 | 17 | $41,350 |
| Stelara (Ustekinumab) | Brand | 26 | 0 | $734,522 |
| Gavilyte-G (Peg3350/Sod Sulf,bicarb,cl/Kcl) | Brand | 24 | 24 | $428 |
Frequently asked questions
What is Dr. Theodore Sy's medical specialty?
Dr. Theodore Sy practices Gastroenterology Physician in Laguna Hills, CA.
Where does Dr. Theodore Sy practice?
Dr. Theodore Sy practices at 26538 Moulton Pkwy Ste 38E, Laguna Hills, CA 92653. Office phone: 9494480656.
What is Dr. Theodore Sy's NPI?
Dr. Theodore Sy's National Provider Identifier (NPI) is 1003865627, issued by NPPES.
Does Dr. Theodore Sy accept Medicare assignment?
Yes. Dr. Theodore Sy accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Theodore Sy commonly perform?
Top Medicare-reported procedures in 2023: Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito (HCPCS G0500); Removal of polyps or growths of large bowel using an endoscope with mechanical snare (HCPCS 45385); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.