RAINIER MARK ENRIQUE GUIANG M.D.
Prescription History 1548217821
Anesthesiology - Pain Medicine in Riverside, CA
Medicare Part D Prescription History
Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for RAINIER MARK ENRIQUE GUIANG M.D., an active Pain Medicine specialist practicing in Riverside, CA. Our medical registry currently tracks 27 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 3,065 documented patient claims. Among these therapy options, the most frequently utilized medication is Hydrocodone-Acetaminophen, which accounts for 661 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 |
|---|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 661 | $21.32▼ below CA avg | ▲ More than typical |
About Hydrocodone-Acetaminophen: This combination medication is used to relieve moderate to severe pain. Show more ▾ It contains an opioid pain reliever (hydrocodone) and a non-opioid pain reliever (acetaminophen). Hydrocodone works in the brain to change how your body feels and responds to pain. Acetaminophen can also reduce a fever. In 2024, this provider wrote 661 Medicare prescriptions for Hydrocodone-Acetaminophen, about 8.7 times the volume of the typical California prescriber of this medication (76.2). Medicare paid an average of $21.32 per fill, versus $21.39 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. 661.1 30-Day Fills standardized to 30-day supplies 18,693 Days of Medication total across all patients in 2024 | |||
| Gabapentin | 530 | $10.23▼ below CA avg | ▲ More than typical |
About Gabapentin: Gabapentin is used with other medications to prevent and control seizures. Show more ▾ It is also used to relieve nerve pain following shingles (a painful rash due to herpes zoster infection) in adults. Gabapentin is known as an anticonvulsant or antiepileptic drug. A cyclohexane-gamma-aminobutyric acid derivative that is used for the treatment of PARTIAL SEIZURES; NEURALGIA; and RESTLESS LEGS SYNDROME. In 2024, this provider wrote 530 Medicare prescriptions for Gabapentin, about 6.6 times the volume of the typical California prescriber of this medication (80.2). Medicare paid an average of $10.23 per fill, versus $15.63 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. 572 30-Day Fills standardized to 30-day supplies 17,109 Days of Medication total across all patients in 2024 | |||
| Tramadol Hcl | 296 | $5.16▼ below CA avg | ▲ More than typical |
About Tramadol Hcl: See also Warning section. Show more ▾ This medication is used to help relieve moderate to moderately severe pain. Tramadol belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. A narcotic analgesic proposed for severe pain. It may be habituating. In 2024, this provider wrote 296 Medicare prescriptions for Tramadol Hcl, about 6.8 times the volume of the typical California prescriber of this medication (43.7). Medicare paid an average of $5.16 per fill, versus $6.24 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. 296.9 30-Day Fills standardized to 30-day supplies 7,180 Days of Medication total across all patients in 2024 | |||
| Methylprednisolone | 214 | $5.57▼ below CA avg | ▲ More than typical |
About Methylprednisolone: Methylprednisolone is used to treat conditions such as arthritis, blood disorders, severe allergic reactions, certain cancers, eye conditions, skin/kidney/intestinal/lung diseases, and immune system disorders. Show more ▾ It decreases your immune system's response to various diseases to reduce symptoms such as swelling, pain, and allergic-type reactions. This medication is a corticosteroid hormone. Methylprednisolone may also be used with other medications in hormone disorders. A PREDNISOLONE derivative with similar anti-inflammatory action. In 2024, this provider wrote 214 Medicare prescriptions for Methylprednisolone, about 7.1 times the volume of the typical California prescriber of this medication (30.2). Medicare paid an average of $5.57 per fill, versus $6.84 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. 214 30-Day Fills standardized to 30-day supplies 1,316 Days of Medication total across all patients in 2024 | |||
| Meloxicam | 193 | $1.56▼ below CA avg | ▲ More than typical |
About Meloxicam: Meloxicam is used to treat arthritis. Show more ▾ It reduces pain, swelling, and stiffness of the joints. Meloxicam is known as a nonsteroidal anti-inflammatory drug (NSAID). If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. See also Warning section. A benzothiazine and thiazole derivative that acts as a NSAID and cyclooxygenase-2 (COX-2) inhibitor. It is used in the treatment of RHEUMATOID ARTHRITIS; OSTEOARTHRITIS; and ANKYLOSING SPONDYLITIS. In 2024, this provider wrote 193 Medicare prescriptions for Meloxicam, about 3.8 times the volume of the typical California prescriber of this medication (50.3). Medicare paid an average of $1.56 per fill, versus $4.39 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. 201 30-Day Fills standardized to 30-day supplies 6,030 Days of Medication total across all patients in 2024 | |||
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 163 | $26.12▼ below CA avg | ▲ More than typical |
About Oxycodone-Acetaminophen: This combination medication is used to help relieve moderate to severe pain. Show more ▾ It contains an opioid pain reliever (oxycodone) and a non-opioid pain reliever (acetaminophen). Oxycodone works in the brain to change how your body feels and responds to pain. Acetaminophen can also reduce a fever. In 2024, this provider wrote 163 Medicare prescriptions for Oxycodone-Acetaminophen, about 3.2 times the volume of the typical California prescriber of this medication (50.2). Medicare paid an average of $26.12 per fill, versus $29.84 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. 163 30-Day Fills standardized to 30-day supplies 4,606 Days of Medication total across all patients in 2024 | |||
| Pregabalin | 128 | $18.57▼ below CA avg | ▲ More than typical |
About Pregabalin: This medication is used to treat pain caused by nerve damage due to diabetes, shingles (herpes zoster) infection, or spinal cord injury. Show more ▾ This medication is also used to treat pain in people with fibromyalgia. It is also used with other medications to treat certain types of seizures (focal seizures). A gamma-aminobutyric acid (GABA) derivative that functions as a CALCIUM CHANNEL BLOCKER and is used as an ANTICONVULSANT as well as an ANTI-ANXIETY AGENT. It is also used as an ANALGESIC in the treatment of NEUROPATHIC PAIN and FIBROMYALGIA. In 2024, this provider wrote 128 Medicare prescriptions for Pregabalin, about 3.3 times the volume of the typical California prescriber of this medication (39.1). Medicare paid an average of $18.57 per fill, versus $24.98 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. 128 30-Day Fills standardized to 30-day supplies 3,840 Days of Medication total across all patients in 2024 | |||
| Cyclobenzaprine Hcl | 85 | $4.44▼ below CA avg | ▲ More than typical |
About Cyclobenzaprine Hcl: Cyclobenzaprine is used short-term to treat muscle spasms. Show more ▾ It is usually used along with rest and physical therapy. It works by helping to relax the muscles. Lisseril is synonymous for HCl; structure. In 2024, this provider wrote 85 Medicare prescriptions for Cyclobenzaprine Hcl, about 2.6 times the volume of the typical California prescriber of this medication (32.1). Medicare paid an average of $4.44 per fill, versus $8.89 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. 85 30-Day Fills standardized to 30-day supplies 2,525 Days of Medication total across all patients in 2024 | |||
| Tizanidine Hcl | 84 | $18.62 | ▲ More than typical |
About Tizanidine Hcl: This medication is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury). Show more ▾ It works by helping to relax the muscles. In 2024, this provider wrote 84 Medicare prescriptions for Tizanidine Hcl, about 2.2 times the volume of the typical California prescriber of this medication (37.4). Medicare paid an average of $18.62 per fill, versus $11.76 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. 126.5 30-Day Fills standardized to 30-day supplies 3,795 Days of Medication total across all patients in 2024 | |||
| Acetaminophen-CodeineAcetaminophen With Codeine | 79 | $16.06▼ below CA avg | ▲ More than typical |
About Acetaminophen-Codeine: See also Warning section. Show more ▾ This combination medication is used to help relieve mild to moderate pain. It contains an opioid pain reliever (codeine) and a non-opioid pain reliever (acetaminophen). Codeine works in the brain to change how your body feels and responds to pain. Acetaminophen can also reduce a fever. In 2024, this provider wrote 79 Medicare prescriptions for Acetaminophen-Codeine, about 2.7 times the volume of the typical California prescriber of this medication (29.5). Medicare paid an average of $16.06 per fill, versus $17.48 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 1,868 Days of Medication total across all patients in 2024 | |||
| Lidocaine | 78 | $116.17 | ▲ More than typical |
About Lidocaine: This product is used to help reduce itching and pain from certain skin conditions (such as scrapes, minor skin irritations, insect bites). Show more ▾ It may also be used to help relieve nerve pain after shingles (infection with herpes zoster virus). Lidocaine belongs to a class of drugs known as local anesthetics. It works by causing a temporary loss of feeling in the area where you apply the patch. A local anesthetic and cardiac depressant used as an antiarrhythmia agent. Its actions are more intense and its effects more prolonged than those of PROCAINE but its duration of action is shorter than that of BUPIVACAINE or PRILOCAINE. In 2024, this provider wrote 78 Medicare prescriptions for Lidocaine, about 2.1 times the volume of the typical California prescriber of this medication (37.5). Medicare paid an average of $116.17 per fill, versus $98.50 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. 88.5 30-Day Fills standardized to 30-day supplies 2,625 Days of Medication total across all patients in 2024 | |||
| Methocarbamol | 78 | $9.81▼ below CA avg | ▲ More than typical |
About Methocarbamol: Methocarbamol is used to treat muscle spasms/pain. Show more ▾ It is usually used along with rest, physical therapy, and other treatment. It works by helping to relax the muscles. A centrally acting muscle relaxant whose mode of action has not been established. It is used as an adjunct in the symptomatic treatment of musculoskeletal conditions associated with painful muscle spasm. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1206) In 2024, this provider wrote 78 Medicare prescriptions for Methocarbamol, about 2.9 times the volume of the typical California prescriber of this medication (27.3). Medicare paid an average of $9.81 per fill, versus $10.93 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. 82.4 30-Day Fills standardized to 30-day supplies 2,429 Days of Medication total across all patients in 2024 | |||
| Baclofen | 64 | $10.03▼ below CA avg | ▲ More than typical |
About Baclofen: Baclofen is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury/disease). Show more ▾ It works by helping to relax the muscles. A GAMMA-AMINOBUTYRIC ACID derivative that is a specific agonist of GABA-B RECEPTORS. It is used in the treatment of MUSCLE SPASTICITY, especially that due to SPINAL CORD INJURIES. Its therapeutic effects result from actions at spinal and supraspinal sites, generally the reduction of excitatory transmission. In 2024, this provider wrote 64 Medicare prescriptions for Baclofen, about 1.5 times the volume of the typical California prescriber of this medication (42). Medicare paid an average of $10.03 per fill, versus $14.75 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. 68 30-Day Fills standardized to 30-day supplies 2,005 Days of Medication total across all patients in 2024 | |||
| Ibuprofen | 63 | $6.36▼ below CA avg | ▲ More than typical |
About Ibuprofen: Ibuprofen is used to relieve pain from various conditions such as headache, dental pain, menstrual cramps, muscle aches, or arthritis. Show more ▾ It is also used to reduce fever and to relieve minor aches and pain due to the common cold or flu. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID). It works by blocking your body's production of certain natural substances that cause inflammation. This effect helps to decrease swelling, pain, or fever. If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. See also Warning section. 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 names may contain different ingredients meant for different purposes. Taking the wrong product could harm you. A non-steroidal anti-inflammatory agent with analgesic, antipyretic, and anti-inflammatory properties In 2024, this provider wrote 63 Medicare prescriptions for Ibuprofen, about 1.5 times the volume of the typical California prescriber of this medication (41.9). Medicare paid an average of $6.36 per fill, versus $6.71 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. 63 30-Day Fills standardized to 30-day supplies 1,870 Days of Medication total across all patients in 2024 | |||
| Celecoxib | 49 | $26.00▼ below CA avg | ≈ Typical |
About Celecoxib: This medication is a nonsteroidal anti-inflammatory drug (NSAID), specifically a COX-2 inhibitor, which relieves pain and swelling (inflammation). Show more ▾ It is used to treat arthritis, acute pain, and menstrual pain and discomfort. The pain and swelling relief provided by this medication helps you perform more of your normal daily activities. If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. See also Warning section. This drug works by blocking the enzyme in your body that makes prostaglandins. Decreasing prostaglandins helps to reduce pain and swelling. A pyrazole derivative and selective CYCLOOXYGENASE 2 INHIBITOR that is used to treat symptoms associated with RHEUMATOID ARTHRITIS; OSTEOARTHRITIS and JUVENILE ARTHRITIS, as well as the management of ACUTE PAIN. In 2024, this provider wrote 49 Medicare prescriptions for Celecoxib, about the same volume as the typical California prescriber of this medication (45.9). Medicare paid an average of $26.00 per fill, versus $32.27 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. 56.3 30-Day Fills standardized to 30-day supplies 1,665 Days of Medication total across all patients in 2024 | |||
| Oxycodone Hcl | 47 | $21.96 | ≈ Typical |
About Oxycodone Hcl: This medication is used to help relieve moderate to severe pain. Show more ▾ Oxycodone belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. A semisynthetic derivative of CODEINE. In 2024, this provider wrote 47 Medicare prescriptions for Oxycodone Hcl, about the same volume as the typical California prescriber of this medication (43.4). Medicare paid an average of $21.96 per fill, versus $16.05 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 Gross Part D cost per fill; not the patient's out-of-pocket price. 47 30-Day Fills standardized to 30-day supplies 1,405 Days of Medication total across all patients in 2024 | |||
| Duloxetine Hcl | 45 | $14.93▼ below CA avg | ≈ Typical |
About Duloxetine Hcl: This medication is used to treat certain mental/mood disorders (such as depression, anxiety). Show more ▾ It is also used to help relieve nerve pain (peripheral neuropathy) in people with diabetes or ongoing pain due to medical conditions such as arthritis, chronic back pain, or fibromyalgia (a condition that causes widespread pain). Duloxetine belongs to a class of drugs known as serotonin-norepinephrine reuptake inhibitors (SNRIs). It works by helping to restore the balance of certain natural substances (serotonin and norepinephrine) in the brain. A thiophene derivative and selective NEUROTRANSMITTER UPTAKE INHIBITOR for SEROTONIN and NORADRENALINE (SNRI). It is an ANTIDEPRESSIVE AGENT and ANXIOLYTIC, and is also used for the treatment of pain in patients with DIABETES MELLITUS and FIBROMYALGIA. In 2024, this provider wrote 45 Medicare prescriptions for Duloxetine Hcl, about the same volume as the typical California prescriber of this medication (40.3). Medicare paid an average of $14.93 per fill, versus $24.72 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. 61.5 30-Day Fills standardized to 30-day supplies 1,814 Days of Medication total across all patients in 2024 | |||
| Diclofenac Sodium | 43 | $106.56▼ below CA avg | ≈ Typical |
About Diclofenac Sodium: See also Warning section. Show more ▾ This medication is used to relieve joint pain from arthritis. Diclofenac belongs to a class of drugs known as nonsteroidal anti-inflammatory drugs (NSAIDs). If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. A non-steroidal anti-inflammatory agent (NSAID) with antipyretic and analgesic actions. It is primarily available as the sodium salt. In 2024, this provider wrote 43 Medicare prescriptions for Diclofenac Sodium, about the same volume as the typical California prescriber of this medication (47.2). Medicare paid an average of $106.56 per fill, versus $107.23 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. 47.2 30-Day Fills standardized to 30-day supplies 1,056 Days of Medication total across all patients in 2024 | |||
| Naproxen | 37 | $5.44▼ below CA avg | ▲ More than typical |
About Naproxen: See also Warning section. Show more ▾ Naproxen is used to relieve pain from various conditions such as headache, muscle aches, tendonitis, dental pain, and menstrual cramps. It also reduces pain, swelling, and joint stiffness caused by arthritis, bursitis, and gout attacks. This medication is known as a nonsteroidal anti-inflammatory drug (NSAID). It works by blocking your body's production of certain natural substances that cause inflammation. If you are treating a chronic condition such as arthritis, ask your doctor about non-drug treatments and/or using other medications to treat your pain. 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 names may contain different ingredients meant for different purposes. Taking the wrong product could harm you. An anti-inflammatory agent with analgesic and antipyretic properties. Both the acid and its sodium salt are used in the treatment of rheumatoid arthritis and other rheumatic or musculoskeletal disorders, dysmenorrhea, and acute gout. In 2024, this provider wrote 37 Medicare prescriptions for Naproxen, about 1.3 times the volume of the typical California prescriber of this medication (29.3). Medicare paid an average of $5.44 per fill, versus $9.70 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. 39 30-Day Fills standardized to 30-day supplies 1,170 Days of Medication total across all patients in 2024 | |||
| Morphine Sulfate ErMorphine Sulfate | 25 | $35.96 | ▼ Less than typical |
About Morphine Sulfate Er: This medication is used to help relieve severe ongoing pain (such as due to cancer). Show more ▾ Morphine belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. The higher strengths of this drug (100 milligrams or more per tablet) should be used only if you have been regularly taking moderate to large amounts of opioid pain medications. These strengths may cause overdose (even death) if taken by a person who has not been regularly taking opioids. Do not use the extended-release form of morphine to relieve pain that is mild or that will go away in a few days. This medication is not for occasional ("as needed") use. The principal alkaloid in opium and the prototype opiate analgesic and narcotic. Morphine has widespread effects in the central nervous system and on smooth muscle. In 2024, this provider wrote 25 Medicare prescriptions for Morphine Sulfate Er, about 64% of the volume of the typical California prescriber of this medication (39). Medicare paid an average of $35.96 per fill, versus $33.95 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. 25 30-Day Fills standardized to 30-day supplies 728 Days of Medication total across all patients in 2024 | |||
| Nortriptyline Hcl | 21 | $11.54▼ below CA avg | ≈ 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 21 Medicare prescriptions for Nortriptyline Hcl, about the same volume as the typical California prescriber of this medication (23.1). Medicare paid an average of $11.54 per fill, versus $16.38 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. 27 30-Day Fills standardized to 30-day supplies 810 Days of Medication total across all patients in 2024 | |||
| Fentanyl | 17 | $133.76 | ▼ Less than typical |
About Fentanyl: This medication is used to help relieve severe ongoing pain (such as due to cancer). Show more ▾ Fentanyl belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. Do not use the patch form of fentanyl to relieve pain that is mild or that will go away in a few days. This medication is not for occasional ("as needed") use. A potent narcotic analgesic, abuse of which leads to habituation or addiction. It is primarily a mu-opioid agonist. Fentanyl is also used as an adjunct to general anesthetics, and as an anesthetic for induction and maintenance. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1078) In 2024, this provider wrote 17 Medicare prescriptions for Fentanyl, about 66% of the volume of the typical California prescriber of this medication (25.7). Medicare paid an average of $133.76 per fill, versus $128.42 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. 17 30-Day Fills standardized to 30-day supplies 480 Days of Medication total across all patients in 2024 | |||
| Trazodone Hcl | 15 | $5.12▼ below CA avg | ▼ Less than typical |
About Trazodone Hcl: This medication is used to treat depression. Show more ▾ Trazodone works by helping to restore the balance of a certain natural substance (serotonin) in the brain. A serotonin uptake inhibitor that is used as an antidepressive agent. It has been shown to be effective in patients with major depressive disorders and other subsets of depressive disorders. It is generally more useful in depressive disorders associated with insomnia and anxiety. This drug does not aggravate psychotic symptoms in patients with schizophrenia or schizoaffective disorders. (From AMA Drug Evaluations Annual, 1994, p309) In 2024, this provider wrote 15 Medicare prescriptions for Trazodone Hcl, about a quarter of the volume of the typical California prescriber of this medication (56.8). Medicare paid an average of $5.12 per fill, versus $9.93 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 30-Day Fills standardized to 30-day supplies 690 Days of Medication total across all patients in 2024 | |||
| Methadone Hcl | 14 | $17.79▼ below CA avg | ▼ Less than typical |
About Methadone Hcl: This medication is used to treat severe ongoing pain (such as due to cancer). Show more ▾ Methadone belongs to a class of drugs known as opioid analgesics. It works in the brain to change how your body feels and responds to pain. Do not use this medication to relieve pain that is mild or that will go away in a few days (such as pain from surgery). This medication is not for occasional ("as needed") use. This medication is also used to treat opioid use disorder as part of an approved treatment program. It helps prevent withdrawal symptoms caused by stopping other opioids. A synthetic opioid that is used as the hydrochloride. It is an opioid analgesic that is primarily a mu-opioid agonist. It has actions and uses similar to those of MORPHINE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1082-3) In 2024, this provider wrote 14 Medicare prescriptions for Methadone Hcl, about half the volume of the typical California prescriber of this medication (29.6). Medicare paid an average of $17.79 per fill, versus $20.07 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. 14 30-Day Fills standardized to 30-day supplies 359 Days of Medication total across all patients in 2024 | |||
| Ropinirole Hcl | 13 | $7.28▼ below CA avg | ▼ Less than typical |
About Ropinirole Hcl: This medication is used alone or with other medications to treat Parkinson's disease. Show more ▾ It can improve your ability to move and decrease shakiness (tremor), stiffness, slowed movement, and unsteadiness. It may also decrease the number of episodes of not being able to move ("on-off syndrome"). Ropinirole is also used to treat restless legs syndrome (RLS). It may improve your sleep by decreasing the urge to move your legs and decreasing uncomfortable/unpleasant feelings in the legs. This medication works by helping to restore the balance of a certain natural substance (dopamine) in the brain. In 2024, this provider wrote 13 Medicare prescriptions for Ropinirole Hcl, about half the volume of the typical California prescriber of this medication (26.7). Medicare paid an average of $7.28 per fill, versus $15.64 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. 13 30-Day Fills standardized to 30-day supplies 390 Days of Medication total across all patients in 2024 | |||
| Lubiprostone | 12 | $41.80▼ below CA avg | ▼ Less than typical |
About Lubiprostone: This medication is used to treat certain types of constipation (chronic idiopathic constipation, irritable bowel syndrome with constipation). Show more ▾ 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. Member of a bicyclic fatty acid class of compounds derived from PROSTAGLANDIN E1 involved in chloride channel gating. In 2024, this provider wrote 12 Medicare prescriptions for Lubiprostone, about half the volume of the typical California prescriber of this medication (23.4). Medicare paid an average of $41.80 per fill, versus $132.30 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 360 Days of Medication total across all patients in 2024 | |||
| BotoxOnabotulinumtoxina | 11 | $852.45▼ below CA avg | ▼ Less than typical |
About Botox: There are different types of botulinum toxin products (toxin A and B) with different uses (eye problems, muscle stiffness/spasms, migraines, cosmetic, overactive bladder). Show more ▾ Different brands of this medication deliver different amounts of medication. Your doctor will choose the correct product for you. Botulinum toxin is used to treat certain eye disorders such as crossed eyes (strabismus) and uncontrolled blinking (blepharospasm), to treat muscle stiffness/spasms or movement disorders (such as cervical dystonia, torticollis), and to reduce the cosmetic appearance of wrinkles or vertical neck bands connecting the jaw and neck (platysma bands). It is also used to prevent headaches in people with very frequent migraines. Botulinum toxin relaxes muscle by blocking the release of a chemical called acetylcholine. Botulinum toxin is also used to treat overactive bladder by patients who do not respond to or who cannot tolerate the side effects of other medications. It helps to reduce leaking of urine, feeling of needing to urinate right away, and frequent trips to the bathroom. It is also used to treat severe underarm sweating and drooling/excess saliva. Botulinum toxin works by blocking the chemicals that turn on the sweat and salivary glands. Botulinum toxin is not a cure, and your symptoms will gradually return as the medication wears off. A serotype of botulinum toxins that has specificity for cleavage of SYNAPTOSOMAL-ASSOCIATED PROTEIN 25. In 2024, this provider wrote 11 Medicare prescriptions for Botox, about a third of the volume of the typical California prescriber of this medication (30.1). Medicare paid an average of $852.45 per fill, versus $1,337.68 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. 32.4 30-Day Fills standardized to 30-day supplies 972 Days of Medication total across all patients in 2024 | |||
About this data. The prescription history for RAINIER MARK ENRIQUE GUIANG M.D. 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 Pain Medicine prescribing approach at this Riverside, 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.
