Gastroenterology · Concord, CA
NPI
1093893091
Since 2006
Specialty
Gastroenterology
Code 174400000X
Group practices
2
Medicare group memberships
Hospitals
3
Hospital affiliations
2222 East St Ste 340
Concord, CA, 94520
Phone (925) 363-0069
Groups this clinician bills Medicare through
Medicare paid, 2024
$223K
1,783 services
Medicare patients, 2024
624
Average age 73
Drug cost, 2024
$425K
1,834 prescriptions
Company payments, 2025
$872
From 11 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Premjit S Chahal was code 45385 (colonoscopy - lesion removal), 326 times for 316 patients. In total Premjit S Chahal billed 1,783 services in 20 codes, and Medicare paid $223K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2026-07-20.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 45385 Colonoscopy - Lesion Removal | Facility | 326 | 316 | $184.18 | $60K |
| 99214 Office E&M - Established | Office | 285 | 228 | $102.49 | $29K |
| 45380 Lower GI Endoscopy - Other | Facility | 229 | 224 | $32.62 | $7,469 |
| 99204 Office E&M - New | Office | 215 | 215 | $135.35 | $29K |
| 43239 Upper GI Endoscopy | Facility | 172 | 158 | $62.09 | $11K |
| 44361 Digestive/Gastrointestinal | Facility | 167 | 154 | $121.20 | $20K |
| 45390 Lower GI Endoscopy - Other | Facility | 117 | 116 | $314.68 | $37K |
| 91065 Test - Miscellaneous | Office | 68 | 35 | $78.79 | $5,358 |
| 99213 Office E&M - Established | Office | 67 | 66 | $75.81 | $5,079 |
| 46221 Digestive/Gastrointestinal | Facility | 65 | 37 | $150.06 | $9,754 |
| 99203 Office E&M - New | Office | 46 | 46 | $94.08 | $4,328 |
By year: 2022 $194K for 1,757 services; 2023 $208K for 1,739 services; 2024 $223K for 1,783 services.
Medicare prescription drug claims, 2024
In 2024, the drug Premjit S Chahal prescribed most often to Medicare patients was Sod Sulf-Potass Sulf-Mag Sulf (Sodium, Potassium,mag Sulfates), with 530 prescriptions and refills. In total Premjit S Chahal wrote 1,834 Medicare prescriptions that cost $425K.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Sod Sulf-Potass Sulf-Mag Sulf Sodium, Potassium,mag Sulfates | 530 | 530 | 497 | $35K |
| Pantoprazole Sodium Generic | 477 | 1,096 | 152 | $7,407 |
| Linzess Linaclotide | 94 | 206 | 33 | $108K |
| Sucralfate Generic | 80 | 130 | 24 | $4,664 |
| Dicyclomine Hcl Generic | 75 | 95 | 32 | $1,699 |
| Famotidine Generic | 70 | 180 | 23 | $1,177 |
| Peg 3350-Electrolyte Sodium Chloride/Nahco3/Kcl/Peg | 64 | 64 | 57 | $1,634 |
| Omeprazole Generic | 49 | 137 | 16 | $1,016 |
| Levofloxacin Generic | 35 | 35 | 34 | $158 |
| Sutab Sod Sulf/Pot Chloride/Mag Sulf | 32 | 32 | 32 | $5,102 |
| Alosetron Hcl Generic | 22 | 22 | Under 11 | $17K |
| Metoclopramide Hcl Generic | 22 | 22 | Under 11 | $90.46 |
| Creon Lipase/Protease/Amylase | 22 | 33 | Under 11 | $83K |
| Lubiprostone Generic | 21 | 33 | Under 11 | $2,689 |
| Ursodiol Generic | 19 | 51 | Under 11 | $3,651 |
Brand drugs: 466 claims; generic drugs: 1,368 claims.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Premjit S Chahal $872 ($872 in general payments such as food, travel and fees) from 11 companies. The largest payer was Abbvie Inc. with $427.
| Company | Payments | Amount |
|---|---|---|
| Abbvie Inc. ABBV | 42 | $427 |
| Janssen Biotech, Inc. JNJ | 4 | $92.01 |
| Pfizer Inc. PFE | 3 | $79.96 |
| Madrigal Pharmaceuticals MDGL | 3 | $72.45 |
| Aimmune Therapeutics, Inc. | 2 | $62 |
| Exelixis Inc. EXEL | 1 | $33.07 |
| Ardelyx, Inc. ARDX | 1 | $24.35 |
| Lilly USA, LLC LLY | 1 | $22.26 |
| Braintree Laboratories, Inc. | 1 | $21.25 |
| Azurity Pharmaceuticals, Inc. | 1 | $20.77 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.