DR. MICHAEL ABEL CHANG M.D.
Prescription History 1114155488
Internal Medicine - Gastroenterology in San Diego, CA

NPI Status: Active since June 25, 2009

Contact Information

200 W ARBOR DR
SAN DIEGO, CA
ZIP 92103
Phone: (858) 249-6748

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Prescription History for Informed Healthcare Decisions

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. MICHAEL ABEL CHANG M.D., an active Gastroenterology specialist practicing in San Diego, CA. Our medical registry currently tracks 14 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 453 documented patient claims. Among these therapy options, the most frequently utilized medication is Omeprazole, which accounts for 69 claims alone.


Colestipol Hcl

Generic Formulation: Colestipol HclSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 16
30-Day Fills 22.6
Days Supply 660
CA State Average Benchmarks
Peer Average Claims20.0
Peer Average 30-Day Fills34.7
Peer Average Days Supply1,008
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $1,944.72 across this reporting matrix range.

Provider Avg Cost Per Claim

$121.55

State Avg Cost Per Claim

$121.93

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

Highly crosslinked and insoluble basic anion exchange resin used as anticholesteremic. It may also may reduce triglyceride levels.

Therapeutic Applications

Colestipol is used along with a proper diet to lower cholesterol in the blood. 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. 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.

Creon

Generic Formulation: Lipase/Protease/AmylaseSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 27
30-Day Fills 39.7
Days Supply 1,104
CA State Average Benchmarks
Peer Average Claims58.0
Peer Average 30-Day Fills69.4
Peer Average Days Supply1,989
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 53.4% less volume than the regional standard for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $44,045.04 across this reporting matrix range.

Provider Avg Cost Per Claim

$1,631.30

State Avg Cost Per Claim

$1,326.08

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

This medication contains digestive enzymes to help break down and digest fats, starch, and proteins in food. It is used in conditions where the pancreas cannot make or does not release enough digestive enzymes into the small intestines to digest the food (conditions such as chronic pancreatitis, cystic fibrosis, cancer of the pancreas, post-pancreatectomy, post-gastrointestinal bypass surgery).

Dicyclomine Hcl

Generic Formulation: Dicyclomine HclSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 19
30-Day Fills 37.0
Days Supply 1,064
CA State Average Benchmarks
Peer Average Claims26.0
Peer Average 30-Day Fills34.3
Peer Average Days Supply877
Conservative Utilization

This provider writes prescriptions for this formulation 26.9% less frequently than the standard regional baseline metric for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $837.97 across this reporting matrix range.

Provider Avg Cost Per Claim

$44.10

State Avg Cost Per Claim

$24.93

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Diphenoxylate-Atropine

Generic Formulation: Diphenoxylate Hcl/AtropineSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 15
30-Day Fills 15.0
Days Supply 197
CA State Average Benchmarks
Peer Average Claims20.0
Peer Average 30-Day Fills21.7
Peer Average Days Supply373
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $321.19 across this reporting matrix range.

Provider Avg Cost Per Claim

$21.41

State Avg Cost Per Claim

$31.55

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

This medication is used to treat diarrhea. It helps to decrease the number and frequency of bowel movements. It works by slowing the movement of the intestines. Diphenoxylate is similar to opioid pain relievers, but it acts mainly to slow the gut. Atropine belongs to a class of drugs known as anticholinergics, which help to dry up body fluids and also slow gut movement. This medication should not be used to treat diarrhea caused by certain types of infection (such as C. difficile-associated diarrhea following antibiotic therapy). Talk to your doctor for more details. This medication is not recommended for use in children younger than 6 years due to an increased risk of serious side effects (such as breathing problems).

Famotidine

Generic Formulation: FamotidineSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 42
30-Day Fills 94.0
Days Supply 2,803
CA State Average Benchmarks
Peer Average Claims51.0
Peer Average 30-Day Fills52.2
Peer Average Days Supply1,044
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $604.15 across this reporting matrix range.

Provider Avg Cost Per Claim

$14.38

State Avg Cost Per Claim

$6.17

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A competitive histamine H2-receptor antagonist. Its main pharmacodynamic effect is the inhibition of gastric secretion.

Therapeutic Applications

Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed. This medication is also used to treat certain stomach and throat (esophagus) problems (such as erosive esophagitis, gastroesophageal reflux disease-GERD, Zollinger-Ellison syndrome). It works by decreasing the amount of acid your stomach makes. It relieves symptoms such as cough that doesn't go away, stomach pain, heartburn, and difficulty swallowing. Famotidine belongs to a class of drugs known as H2 blockers. This medication is also available without a prescription. It is used to prevent and treat heartburn and other symptoms caused by too much acid in the stomach (acid indigestion). If you are taking this medication for self-treatment, it is important to read the manufacturer's package instructions carefully so you know when to consult your doctor or pharmacist.

Gavilyte-G

Generic Formulation: Peg3350/Sod Sulf,bicarb,cl/KclSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 59
30-Day Fills 59.0
Days Supply 128
CA State Average Benchmarks
Peer Average Claims50.0
Peer Average 30-Day Fills50.3
Peer Average Days Supply74
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $1,000.61 across this reporting matrix range.

Provider Avg Cost Per Claim

$16.96

State Avg Cost Per Claim

$14.69

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

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. 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.

Lidocaine Hcl Viscous

Generic Formulation: Lidocaine HclSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 15
30-Day Fills 15.0
Days Supply 225
CA State Average Benchmarks
Peer Average Claims19.0
Peer Average 30-Day Fills19.4
Peer Average Days Supply169
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $131.73 across this reporting matrix range.

Provider Avg Cost Per Claim

$8.78

State Avg Cost Per Claim

$14.06

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

This medication is used on the skin to stop itching and pain from certain skin conditions (such as scrapes, minor burns, eczema, insect bites) and to treat minor discomfort and itching caused by hemorrhoids and certain other problems of the genital/anal area (such as anal fissures, itching around the vagina/rectum). Some forms of this medication are also used to decrease discomfort or pain during certain medical procedures/exams (such as sigmoidoscopy, cystoscopy). Lidocaine is a local anesthetic that works by causing temporary numbness/loss of feeling in the skin and mucous membranes.

Linzess

Generic Formulation: LinaclotideSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 23
30-Day Fills 27.0
Days Supply 810
CA State Average Benchmarks
Peer Average Claims51.0
Peer Average 30-Day Fills67.9
Peer Average Days Supply2,001
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 54.9% less volume than the regional standard for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $15,239.47 across this reporting matrix range.

Provider Avg Cost Per Claim

$662.59

State Avg Cost Per Claim

$677.43

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

See also Warning section. Linaclotide is used to treat certain types of bowel problems (irritable bowel syndrome with constipation, chronic idiopathic constipation). It works by increasing fluid in your intestines and helping speed up movement of food through the gut. Linaclotide may improve stool texture and lessen symptoms such as bloating, abdominal pain/discomfort, straining, and feelings of incomplete bowel movements.

Lubiprostone

Generic Formulation: LubiprostoneSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 17
30-Day Fills 19.0
Days Supply 570
CA State Average Benchmarks
Peer Average Claims21.0
Peer Average 30-Day Fills26.5
Peer Average Days Supply742
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $3,818.14 across this reporting matrix range.

Provider Avg Cost Per Claim

$224.60

State Avg Cost Per Claim

$349.43

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

Member of a bicyclic fatty acid class of compounds derived from PROSTAGLANDIN E1 involved in chloride channel gating.

Therapeutic Applications

This medication is used to treat certain types of constipation (chronic idiopathic constipation, irritable bowel syndrome with constipation). Chronic idiopathic constipation has an unknown cause and is not due to diet, other diseases, or drugs. Lubiprostone is also used to treat constipation caused by opioid medications in people with ongoing pain due to medical conditions other than cancer. This medication may improve symptoms such as bloating and abdominal discomfort, improve stool texture, lessen the need to strain, and decrease the feeling of not completely relieving oneself. Lubiprostone belongs to a class of drugs known as chloride channel activators. It works by increasing the amount of fluid within your intestines, making the passage of stool easier.

Omeprazole

Generic Formulation: OmeprazoleSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 69
30-Day Fills 167.0
Days Supply 4,894
CA State Average Benchmarks
Peer Average Claims80.0
Peer Average 30-Day Fills174.0
Peer Average Days Supply5,169
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $939.75 across this reporting matrix range.

Provider Avg Cost Per Claim

$13.62

State Avg Cost Per Claim

$13.72

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

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.

Therapeutic Applications

Omeprazole is used to treat certain stomach and esophagus problems (such as acid reflux, ulcers). 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.

Pantoprazole Sodium

Generic Formulation: Pantoprazole SodiumSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 36
30-Day Fills 66.0
Days Supply 1,980
CA State Average Benchmarks
Peer Average Claims62.0
Peer Average 30-Day Fills125.5
Peer Average Days Supply3,693
Conservative Utilization

This provider writes prescriptions for this formulation 41.9% less frequently than the standard regional baseline metric for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $350.61 across this reporting matrix range.

Provider Avg Cost Per Claim

$9.74

State Avg Cost Per Claim

$16.94

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.

Therapeutic Applications

Pantoprazole is used to treat certain stomach and esophagus problems (such as acid reflux). 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).

Sod Sulf-Potass Sulf-Mag Sulf

Generic Formulation: Sodium, Potassium,mag SulfatesSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 68
30-Day Fills 78.8
Days Supply 444
CA State Average Benchmarks
Peer Average Claims26.0
Peer Average 30-Day Fills27.1
Peer Average Days Supply50
Highly Elevated Utilization

This provider exhibits a high preference for this treatment path, registering a volume 161.5% higher than the standard regional baseline profile for CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $5,291.72 across this reporting matrix range.

Provider Avg Cost Per Claim

$77.82

State Avg Cost Per Claim

$83.42

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Therapeutic Applications

Sodium/potassium/magnesium sulfate solution is used to clean out the intestines before a certain bowel exam procedure (colonoscopy). It is a laxative that works by drawing large amounts of water into the colon. This causes watery bowel movements. Clearing stool from the intestines helps your doctor to better examine the intestines during your procedure.

Sucralfate

Generic Formulation: SucralfateSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 33
30-Day Fills 38.6
Days Supply 996
CA State Average Benchmarks
Peer Average Claims27.0
Peer Average 30-Day Fills35.6
Peer Average Days Supply960
Standard Average Utilization

This provider's prescribing patterns for this therapeutic formulation sit directly in line with standard baseline averages across CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $1,390.40 across this reporting matrix range.

Provider Avg Cost Per Claim

$42.13

State Avg Cost Per Claim

$71.55

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A basic aluminum complex of sulfated sucrose.

Therapeutic Applications

This medication is used to treat ulcers in the intestines. Sucralfate forms a coating over ulcers, protecting the area from further injury. This helps ulcers heal more quickly.

Ursodiol

Generic Formulation: UrsodiolSpecialty: Gastroenterology
Provider Metrics Summary
Total Claims 14
30-Day Fills 26.0
Days Supply 780
CA State Average Benchmarks
Peer Average Claims29.0
Peer Average 30-Day Fills53.1
Peer Average Days Supply1,569
Highly Conservative Utilization

This provider demonstrates a highly selective approach to this formula, recording 51.7% less volume than the regional standard for practitioners inside CA. Gross expenditures recorded under Medicare program tracking definitions for this provider calculate to an estimated aggregate of $2,521.34 across this reporting matrix range.

Provider Avg Cost Per Claim

$180.10

State Avg Cost Per Claim

$244.56

Note on Expenses: These indicators represent gross infrastructure resource tracking paid directly to supply pharmacy networks by Medicare Part D configurations. These calculations do not track individual patient insurance tier copays or out-of-pocket shelf prices at retail checkout lanes.

Clinical Summary

A penicillin derivative commonly used in the form of its sodium or potassium salts in the treatment of a variety of infections. It is effective against most gram-positive bacteria and against gram-negative cocci. It has also been used as an experimental convulsant because of its actions on GAMMA-AMINOBUTYRIC ACID mediated synaptic transmission.

Therapeutic Applications

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). Ursodiol is a bile acid.

Dataset Methodology & CMS Source Information

This analytical profile maps public infrastructure records sourced directly from official **Centers for Medicare & Medicaid Services (CMS)** public data releases. The statistics above track documented pharmaceutical treatment trends assigned to beneficiaries specifically under federal public programs. Evaluating the prescriptive footprints of clinical practitioners like DR. MICHAEL ABEL CHANG M.D. provides transparency into local medical care patterns within San Diego, CA.

Key Learning Objectives for this Profile:

  • Prescribing Frequencies: Track and evaluate the volume metrics of specific brand-name and generic medical formulas chosen by this provider over time.
  • Clinical Focus Areas: Identify how the provider distributes therapeutic selections across medical care options to gain insight into their true day-to-day **Gastroenterology** practice concentrations.
  • Program Cost Awareness: Review the calculated total systemic drug costs and raw transactional volumes linked to these orders to better anticipate network insurance coverage structures.
  • Patient-Centered Evaluation: Cross-reference localized regional care comparisons to align practitioner habits directly with your proactive health maintenance goals.

Data Scope Exclusion & Limitations: The data elements presented above explicitly reflect prescription orders processed for Medicare beneficiaries during the year 2023. This informational profile does not aggregate prescription data for individuals utilizing private commercial health plans, state Medicaid coverage, or self-pay options. However, because medical decision-making remains highly consistent across clinical settings, this public registry provides a reliable proxy for understanding the general prescribing preferences and pharmaceutical care approach used by this provider.