LANCHINH H. NGUYEN MD
Prescription History 1487732921
Internal Medicine - Gastroenterology in Vacaville, CA
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for LANCHINH H. NGUYEN MD, an active Gastroenterology specialist practicing in Vacaville, CA. Our medical registry currently tracks 11 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 418 documented patient claims. Among these therapy options, the most frequently utilized medication is Gavilyte-C, which accounts for 139 claims alone. Use the table below to sort by claims, cost, or utilization compared with the state average; select any medication for its full profile.
| Medication | Prescriptions (2024)Rx (2024) | Avg Cost per FillCost / Fill | Vs. Other CA PrescribersVs. CA Avg |
|---|---|---|---|
| Gavilyte-CPeg3350/Sod Sulf,bicarb,cl/Kcl | 139 | $23.26 | ▲ More than typical |
About Gavilyte-C: PEG (polyethylene glycol) with electrolyte is used to clean out the intestines before certain bowel exam procedures such as colonoscopy or barium enema X-rays. Show more ▾ It is a laxative that works by drawing large amounts of water into the colon. This effect results in watery bowel movements. Clearing stool from the intestines helps your doctor to better examine the intestines during your procedure. In 2024, this provider wrote 139 Medicare prescriptions for Gavilyte-C, about 1.4 times the volume of the typical California prescriber of this medication (101.5). Medicare paid an average of $23.26 per fill, versus $21.56 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 139 30-Day Fills standardized to 30-day supplies 231 Days of Medication total across all patients in 2024 | |||
| Omeprazole | 59 | $18.33 | ≈ Typical |
About Omeprazole: Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers). Show more ▾ It works by decreasing the amount of acid your stomach makes. It relieves symptoms such as heartburn, difficulty swallowing, and cough. This medication helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Omeprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). If you are self-treating with this medication, over-the-counter omeprazole products are used to treat frequent heartburn (occurring 2 or more days a week). Since it may take 1 to 4 days to have full effect, these products do not relieve heartburn right away. For over-the-counter products, carefully read the package instructions to make sure the product is right for you. Check the ingredients on the label even if you have used the product before. The manufacturer may have changed the ingredients. Also, products with similar brand names may contain different ingredients meant for different purposes. Taking the wrong product could harm you. A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. In 2024, this provider wrote 59 Medicare prescriptions for Omeprazole, about 76% of the volume of the typical California prescriber of this medication (78.1). Medicare paid an average of $18.33 per fill, versus $11.26 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 196.3 30-Day Fills standardized to 30-day supplies 5,890 Days of Medication total across all patients in 2024 | |||
| Mesalamine | 52 | $243.57▼ below CA avg | ▲ More than typical |
About Mesalamine: This medication is used to treat a certain bowel disease (ulcerative colitis). Show more ▾ It helps to reduce symptoms of ulcerative colitis such as diarrhea, rectal bleeding, and stomach pain. Mesalamine belongs to a class of drugs known as aminosalicylates. It works by decreasing swelling in the colon. An anti-inflammatory agent, structurally related to the SALICYLATES, which is active in INFLAMMATORY BOWEL DISEASE. It is considered to be the active moiety of SULPHASALAZINE. (From Martindale, The Extra Pharmacopoeia, 30th ed) In 2024, this provider wrote 52 Medicare prescriptions for Mesalamine, about 1.9 times the volume of the typical California prescriber of this medication (28). Medicare paid an average of $243.57 per fill, versus $446.16 statewide. How often this provider prescribes it This provider prescribes this medication more often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 79 30-Day Fills standardized to 30-day supplies 2,370 Days of Medication total across all patients in 2024 | |||
| Pantoprazole Sodium | 36 | $33.01 | ▼ Less than typical |
About Pantoprazole Sodium: Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux). Show more ▾ It works by decreasing the amount of acid your stomach makes. This medication relieves symptoms such as heartburn, difficulty swallowing, and cough. It helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. Pantoprazole belongs to a class of drugs known as proton pump inhibitors (PPIs). 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER. In 2024, this provider wrote 36 Medicare prescriptions for Pantoprazole Sodium, about half the volume of the typical California prescriber of this medication (64.8). Medicare paid an average of $33.01 per fill, versus $13.87 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 76.3 30-Day Fills standardized to 30-day supplies 2,290 Days of Medication total across all patients in 2024 | |||
| Buspirone Hcl | 32 | $9.48▼ below CA avg | ≈ Typical |
About Buspirone Hcl: This medication is used to treat anxiety. Show more ▾ It may help you think more clearly, relax, worry less, and take part in everyday life. It may also help you to feel less jittery and irritable, and may control symptoms such as trouble sleeping, sweating, and pounding heartbeat. Buspirone is a medication for anxiety (anxiolytic) that works by affecting certain natural substances in the brain (neurotransmitters). An anxiolytic agent and serotonin receptor agonist belonging to the azaspirodecanedione class of compounds. Its structure is unrelated to those of the BENZODIAZAPINES, but it has an efficacy comparable to DIAZEPAM. In 2024, this provider wrote 32 Medicare prescriptions for Buspirone Hcl, about 87% of the volume of the typical California prescriber of this medication (36.9). Medicare paid an average of $9.48 per fill, versus $13.30 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 44.4 30-Day Fills standardized to 30-day supplies 1,333 Days of Medication total across all patients in 2024 | |||
| Dicyclomine Hcl | 29 | $15.37▼ below CA avg | ≈ Typical |
About Dicyclomine Hcl: Dicyclomine is used to treat a certain type of intestinal problem called irritable bowel syndrome. Show more ▾ It helps to reduce the symptoms of stomach and intestinal cramping. This medication works by slowing the natural movements of the gut and by relaxing the muscles in the stomach and intestines. Dicyclomine belongs to a class of drugs known as anticholinergics/antispasmodics. This medication must not be used by children younger than 6 months because of the risk of serious side effects. A muscarinic antagonist used as an antispasmodic and in urinary incontinence. It has little effect on glandular secretion or the cardiovascular system. It does have some local anesthetic properties and is used in gastrointestinal, biliary, and urinary tract spasms. In 2024, this provider wrote 29 Medicare prescriptions for Dicyclomine Hcl, about the same volume as the typical California prescriber of this medication (26.6). Medicare paid an average of $15.37 per fill, versus $17.05 statewide. How often this provider prescribes it This provider's prescribing volume for this medication is in line with the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 30.1 30-Day Fills standardized to 30-day supplies 543 Days of Medication total across all patients in 2024 | |||
| Amjevita(Cf) AutoinjectorAdalimumab-Atto | 21 | $1,386.17▼ below CA avg | ▼ Less than typical |
About Amjevita(Cf) Autoinjector: Adalimumab is used to reduce pain and swelling due to certain types of arthritis (such as rheumatoid, psoriatic, juvenile idiopathic, ankylosing spondylitis). Show more ▾ This medication is also used to treat certain skin disorders (such as plaque-type psoriasis, hidradenitis suppurativa). It works by blocking a protein (tumor necrosis factor or TNF) found in the body's immune system that causes joint swelling and damage in arthritis as well as red scaly patches in psoriasis. Adalimumab belongs to a class of drugs known as TNF blockers. By reducing joint swelling, this medication helps to reduce further joint damage and preserve joint function. Adalimumab is also used to treat certain bowel conditions (Crohn's disease, ulcerative colitis) and a certain eye disease (uveitis). This monograph is about the following adalimumab products: adalimumab, adalimumab-aacf, adalimumab-aaty, adalimumab-adaz, adalimumab-adbm, adalimumab-afzb, adalimumab-aqvh, adalimumab-atto, adalimumab-bwwd, adalimumab-fkjp, and adalimumab-ryvk. A humanized monoclonal antibody that binds specifically to TNF-ALPHA and blocks its interaction with endogenous TNF RECEPTORS to modulate INFLAMMATION. It is used in the treatment of RHEUMATOID ARTHRITIS; PSORIATIC ARTHRITIS; CROHN'S DISEASE and ULCERATIVE COLITIS. In 2024, this provider wrote 21 Medicare prescriptions for Amjevita(Cf) Autoinjector, about half the volume of the typical California prescriber of this medication (41). Medicare paid an average of $1,386.17 per fill, versus $1,402.98 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 21 30-Day Fills standardized to 30-day supplies 588 Days of Medication total across all patients in 2024 | |||
| Ursodiol | 15 | $287.49 | ▼ Less than typical |
About Ursodiol: Ursodiol is used to dissolve certain types of gallstones, to prevent gallstones from forming in obese patients who are losing weight rapidly, and to treat a certain type of liver disease (primary biliary cholangitis). Show more ▾ Ursodiol is a bile acid. An epimer of chenodeoxycholic acid. It is a mammalian bile acid found first in the bear and is apparently either a precursor or a product of chenodeoxycholate. Its administration changes the composition of bile and may dissolve gallstones. It is used as a cholagogue and choleretic. In 2024, this provider wrote 15 Medicare prescriptions for Ursodiol, about half the volume of the typical California prescriber of this medication (30.6). Medicare paid an average of $287.49 per fill, versus $145.45 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill Gross Part D cost per fill; not the patient's out-of-pocket price. 48.7 30-Day Fills standardized to 30-day supplies 1,460 Days of Medication total across all patients in 2024 | |||
| Azathioprine | 12 | $32.61▼ below CA avg | ▼ Less than typical |
About Azathioprine: Azathioprine is used to prevent organ rejection in people who have received a kidney transplant. Show more ▾ It is usually taken along with other medications to allow your new kidney to function normally. Azathioprine is also used to treat rheumatoid arthritis. In this condition, the body's defense system (immune system) attacks healthy joints. Azathioprine belongs to a class of drugs known as immunosuppressants. It works by weakening the immune system to help your body accept the new kidney as if it were your own (in the case of an organ transplant) or to prevent further damage to your joints (in the case of rheumatoid arthritis). Talk to your doctor about the risks and benefits of azathioprine, especially when used by children and young adults. An immunosuppressive agent used in combination with cyclophosphamide and hydroxychloroquine in the treatment of rheumatoid arthritis. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), this substance has been listed as a known carcinogen. (Merck Index, 11th ed) In 2024, this provider wrote 12 Medicare prescriptions for Azathioprine, about half the volume of the typical California prescriber of this medication (24.6). Medicare paid an average of $32.61 per fill, versus $47.82 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 23.7 30-Day Fills standardized to 30-day supplies 710 Days of Medication total across all patients in 2024 | |||
| CholestyramineCholestyramine (With Sugar) | 12 | $44.30▼ below CA avg | ▼ Less than typical |
About Cholestyramine: Cholestyramine is used along with a proper diet to lower cholesterol in the blood. Show more ▾ Lowering cholesterol helps decrease the risk for strokes and heart attacks. In addition to a proper diet (such as a low-cholesterol/low-fat diet), other lifestyle changes that may help this medication work better include exercising, losing weight if overweight, and stopping smoking. Consult your doctor for more details. Cholestyramine may also be used to treat itching in people with too much bile acid caused by a certain type of liver/bile duct disease (partial biliary obstruction). This medication is known as a bile acid-binding resin. It works by removing bile acid from the body. In people with high cholesterol, this causes the liver to make more bile acid by using cholesterol in the blood. This helps to lower the cholesterol levels. A strongly basic anion exchange resin whose main constituent is polystyrene trimethylbenzylammonium Cl(-) anion. In 2024, this provider wrote 12 Medicare prescriptions for Cholestyramine, about 61% of the volume of the typical California prescriber of this medication (19.7). Medicare paid an average of $44.30 per fill, versus $72.34 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 12 30-Day Fills standardized to 30-day supplies 252 Days of Medication total across all patients in 2024 | |||
| Nortriptyline Hcl | 11 | $16.11▼ below CA avg | ▼ Less than typical |
About Nortriptyline Hcl: This medication is used to treat depression. Show more ▾ Nortriptyline belongs to a class of drugs known as tricyclic antidepressants. It works by helping to restore the balance of certain natural substances in the brain. A metabolite of AMITRIPTYLINE that is also used as an antidepressive agent. Nortriptyline is used in major depression, dysthymia, and atypical depressions. In 2024, this provider wrote 11 Medicare prescriptions for Nortriptyline Hcl, about half the volume of the typical California prescriber of this medication (23.1). Medicare paid an average of $16.11 per fill, versus $16.38 statewide. How often this provider prescribes it This provider prescribes this medication less often than the average CA prescriber. Utilization reflects practice size as well as clinical preference. What Medicare paid per fill This provider's average cost per fill is below the CA average for this medication. 22.6 30-Day Fills standardized to 30-day supplies 678 Days of Medication total across all patients in 2024 | |||
About this data. The prescription history for LANCHINH H. NGUYEN MD is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2024, the most recent federal release. Figures cover prescriptions filled for Medicare Part D beneficiaries only; prescriptions under private insurance, Medicaid, or self-pay plans are not included. Because prescribing decisions are generally consistent across coverage types, this record offers a useful view of the overall Gastroenterology prescribing approach at this Vacaville, CA practice.
Reading the costs. Drug costs are gross amounts paid to pharmacies under Part D, including both plan and beneficiary payments. They are not the price a patient pays at the pharmacy counter. Medications with fewer than 11 claims are excluded from the federal source data, and state comparisons use the average among CA prescribers of the same medication and form, shown only when at least five prescribers contribute. Always confirm current medications and costs directly with the provider and your plan.
About the medication summaries. Drug use descriptions come from the CMS Medicare Part D Drug Spending Dashboard (2024), and substance definitions from Medical Subject Headings (MeSH) 2026, U.S. National Library of Medicine. They are summaries that do not contain all possible information about a medication and are not individual medical advice. Ask a health care professional about any medication and your specific health needs.
