Doctor profile · Federal record
Dr. Haig Najarian, MD
Gastroenterology Physician (CMS: Gastroenterology) · Orange, CA
- NPI 1912010257
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1010 W la Veta, Suite 570
Orange, CA 928684223
(714) 835-7700
fax (714) 835-8144
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- October 31, 2016
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #G77745
- Medicaid
- CA #00G777450
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912010257. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,925
Distinct HCPCS
10
Medicare allowed
$171,330
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99439 |
Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | 609 | 51 | $51 | |
99490 |
Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | 355 | 50 | $67 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 301 | 203 | $97 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 137 | 106 | $136 | |
43239 |
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 106 | 102 | $95 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 85 | 85 | $121 | |
45385 |
Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 71 | 71 | $260 | |
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 | 50 | 50 | $6 | |
45380 |
Biopsy of large bowel using a flexible endoscope | 39 | 39 | $142 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 37 | 37 | $180 |
In context: peer comparison
Among 16 peers in Orange Gastroenterology Physician, average services per provider: 65. This provider delivers 30× the peer median.Open Payments
Industry payments received
All-time total
$2,284
Transactions
112
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 53 | $1,008.98 | |
| Pfizer INC. | 10 | $175.39 | |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | 9 | $168.31 | |
| Ardelyx, INC. | 6 | $142.39 | |
| Qol Medical, LLC | 5 | $114.84 | |
| Madrigal Pharmaceuticals | 3 | $113.81 | |
| Genzyme Corporation | 4 | $97.12 | |
| Takeda Pharmaceuticals U.S.A., INC. | 5 | $95.60 | |
| Phathom Pharmaceuticals, INC. | 5 | $82.31 | |
| Albireo Pharma, INC. | 4 | $73.29 | |
| Lilly USA, LLC | 2 | $48.10 | |
| Celgene Corporation | 2 | $39.72 | |
| Celltrion USA INC. | 2 | $37.57 | |
| Janssen Biotech, INC. | 1 | $25.20 | |
| Exact Sciences Corporation | 1 | $24.23 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
888
Patients
272
Total drug cost
$92,383
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Omeprazole | Generic | 379 | 137 | $5,762 |
| Pantoprazole Sodium | Generic | 128 | 48 | $2,114 |
| Famotidine | Generic | 69 | 26 | $1,563 |
| Linzess (Linaclotide) | Brand | 49 | 16 | $40,085 |
| Lansoprazole | Generic | 38 | 12 | $9,715 |
| Prednisone | Generic | 34 | 0 | $178 |
| Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,Mag Sulfates) | Brand | 33 | 33 | $2,332 |
| Rabeprazole Sodium | Generic | 25 | 0 | $774 |
| Dicyclomine Hcl | Generic | 23 | 0 | $333 |
| Mesalamine | Generic | 21 | 0 | $13,832 |
Hospital affiliations
Frequently asked questions
What is Dr. Haig Najarian's medical specialty?
Dr. Haig Najarian practices Gastroenterology Physician in Orange, CA.
Where does Dr. Haig Najarian practice?
Dr. Haig Najarian practices at 1010 W la Veta, Orange, CA 928684223. Office phone: 7148357700.
What is Dr. Haig Najarian's NPI?
Dr. Haig Najarian's National Provider Identifier (NPI) is 1912010257, issued by NPPES.
Does Dr. Haig Najarian accept Medicare assignment?
Yes. Dr. Haig Najarian accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Haig Najarian commonly perform?
Top Medicare-reported procedures in 2023: Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (HCPCS 99439); Chronic care management services (HCPCS 99490); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.