DR. CHANNING DALE WILLOUGHBY MD
Prescription History 1235336421
Pain Medicine - Pain Medicine in Spartanburg, SC
What does Dr. Willoughby prescribe?
In 2024, Dr. Willoughby wrote 7,505 Medicare prescriptions for 38 medications. The most prescribed was Hydrocodone-Acetaminophen (hydrocodone/acetaminophen), with 1,494 prescriptions for 411 patients.
Medicare Part D only. These are prescriptions filled by people with Medicare drug coverage in 2024, from the CMS data released in 2026, the most recent year available. CMS does not publish medications with fewer than 11 prescriptions, so this is not a full list of what Dr. Willoughby prescribes.
Medications 38 medications
Prescriptions filled under Medicare Part D in 2024. Select a medication to see what it is used for and how it compares with other South Carolina prescribers.
What it is used for
This combination medication is used to relieve moderate to severe pain.
Compared with South Carolina prescribers
Dr. Willoughby wrote 1,494 prescriptions for Hydrocodone-Acetaminophen, about 17 times as often as the typical South Carolina prescriber of it (89). Medicare paid $24.35 per fill, versus $18.99 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Gabapentin is used with other medications to prevent and control seizures.
Compared with South Carolina prescribers
Dr. Willoughby wrote 1,149 prescriptions for Gabapentin, about 12 times as often as the typical South Carolina prescriber of it (97). Medicare paid $12.88 per fill, versus $15.01 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This combination medication is used to help relieve moderate to severe pain.
Compared with South Carolina prescribers
Dr. Willoughby wrote 1,045 prescriptions for Oxycodone-Acetaminophen, about 11 times as often as the typical South Carolina prescriber of it (92). Medicare paid $30.51 per fill, versus $42.60 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury).
Compared with South Carolina prescribers
Dr. Willoughby wrote 706 prescriptions for Tizanidine Hcl, about 15 times as often as the typical South Carolina prescriber of it (48). Medicare paid $10.61 per fill, versus $9.65 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat pain caused by nerve damage due to diabetes, shingles (herpes zoster) infection, or spinal cord injury.
Compared with South Carolina prescribers
Dr. Willoughby wrote 400 prescriptions for Pregabalin, about 8.2 times as often as the typical South Carolina prescriber of it (49). Medicare paid $19.31 per fill, versus $23.86 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Cyclobenzaprine is used short-term to treat muscle spasms.
Compared with South Carolina prescribers
Dr. Willoughby wrote 384 prescriptions for Cyclobenzaprine Hcl, about 9.2 times as often as the typical South Carolina prescriber of it (42). Medicare paid $8.50 per fill, versus $7.64 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with South Carolina prescribers
Dr. Willoughby wrote 331 prescriptions for Tramadol Hcl, about 5.2 times as often as the typical South Carolina prescriber of it (64). Medicare paid $8.23 per fill, versus $6.50 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with South Carolina prescribers
Dr. Willoughby wrote 259 prescriptions for Duloxetine Hcl, about 4.7 times as often as the typical South Carolina prescriber of it (56). Medicare paid $20.41 per fill, versus $24.99 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with South Carolina prescribers
Dr. Willoughby wrote 218 prescriptions for Diclofenac Sodium, about 4.8 times as often as the typical South Carolina prescriber of it (45). Medicare paid $22.14 per fill, versus $29.08 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Meloxicam is used to treat arthritis.
Compared with South Carolina prescribers
Dr. Willoughby wrote 202 prescriptions for Meloxicam, about 3.3 times as often as the typical South Carolina prescriber of it (61). Medicare paid $1.93 per fill, versus $3.93 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Baclofen is used to treat muscle spasms caused by certain conditions (such as multiple sclerosis, spinal cord injury/disease).
Compared with South Carolina prescribers
Dr. Willoughby wrote 137 prescriptions for Baclofen, about 3.6 times as often as the typical South Carolina prescriber of it (38). Medicare paid $9.98 per fill, versus $16.91 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Methocarbamol is used to treat muscle spasms/pain.
Compared with South Carolina prescribers
Dr. Willoughby wrote 133 prescriptions for Methocarbamol, about 4.6 times as often as the typical South Carolina prescriber of it (29). Medicare paid $10.41 per fill, versus $10.95 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to help relieve severe ongoing pain (such as due to cancer).
Compared with South Carolina prescribers
Dr. Willoughby wrote 131 prescriptions for Morphine Sulfate Er, about 2 times as often as the typical South Carolina prescriber of it (66). Medicare paid $23.69 per fill, versus $30.72 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to help relieve moderate to severe pain.
Compared with South Carolina prescribers
Dr. Willoughby wrote 109 prescriptions for Oxycodone Hcl, about 1.9 times as often as the typical South Carolina prescriber of it (58). Medicare paid $17.37 per fill, versus $14.38 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with South Carolina prescribers
Dr. Willoughby wrote 105 prescriptions for Amitriptyline Hcl, about 3.5 times as often as the typical South Carolina prescriber of it (30). Medicare paid $14.09 per fill, versus $14.43 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with South Carolina prescribers
Dr. Willoughby wrote 103 prescriptions for Trazodone Hcl, about 1.4 times as often as the typical South Carolina prescriber of it (74). Medicare paid $5.32 per fill, versus $8.64 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a wide variety of bacterial infections.
Compared with South Carolina prescribers
Dr. Willoughby wrote 83 prescriptions for Cephalexin, about 2.5 times as often as the typical South Carolina prescriber of it (33). Medicare paid $3.48 per fill, versus $6.45 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Ibuprofen is used to relieve pain from various conditions such as headache, dental pain, menstrual cramps, muscle aches, or arthritis.
Compared with South Carolina prescribers
Dr. Willoughby wrote 83 prescriptions for Ibuprofen, about 2.5 times as often as the typical South Carolina prescriber of it (33). Medicare paid $9.55 per fill, versus $7.98 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Zonisamide is used with other medications to prevent and control seizures (epilepsy).
Compared with South Carolina prescribers
Dr. Willoughby wrote 63 prescriptions for Zonisamide, about 1.7 times as often as the typical South Carolina prescriber of it (37). Medicare paid $15.08 per fill, versus $28.39 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is a nonsteroidal anti-inflammatory drug (NSAID), specifically a COX-2 inhibitor, which relieves pain and swelling (inflammation).
Compared with South Carolina prescribers
Dr. Willoughby wrote 40 prescriptions for Celecoxib, about 89% as often as the typical South Carolina prescriber of it (45). Medicare paid $10.35 per fill, versus $28.56 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
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.
Compared with South Carolina prescribers
Dr. Willoughby wrote 38 prescriptions for Methylprednisolone, about as often as the typical South Carolina prescriber of it (39). Medicare paid $5.03 per fill, versus $6.14 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to help relieve severe ongoing pain (such as due to arthritis, chronic back pain).
Compared with South Carolina prescribers
Dr. Willoughby wrote 35 prescriptions for Buprenorphine, about 64% as often as the typical South Carolina prescriber of it (55). Medicare paid $237.85 per fill, versus $247.44 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to help relieve severe ongoing pain (such as due to cancer).
Compared with South Carolina prescribers
Dr. Willoughby wrote 29 prescriptions for Fentanyl, about as often as the typical South Carolina prescriber of it (29). Medicare paid $89.83 per fill, versus $112.89 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This product is used to help reduce itching and pain from certain skin conditions (such as scrapes, minor skin irritations, insect bites).
Compared with South Carolina prescribers
Dr. Willoughby wrote 28 prescriptions for Lidocaine, about as often as the typical South Carolina prescriber of it (26). Medicare paid $85.90 per fill, versus $95.37 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a certain sleep problem (insomnia).
Compared with South Carolina prescribers
Dr. Willoughby wrote 25 prescriptions for Temazepam, about 76% as often as the typical South Carolina prescriber of it (33). Medicare paid $7.64 per fill, versus $10.54 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Zolpidem is used for a short time to treat a certain sleep problem (insomnia) in adults.
Compared with South Carolina prescribers
Dr. Willoughby wrote 19 prescriptions for Zolpidem Tartrate, about 31% as often as the typical South Carolina prescriber of it (62). Medicare paid $6.48 per fill, versus $5.99 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Clindamycin is used to treat a wide variety of bacterial infections.
Compared with South Carolina prescribers
Dr. Willoughby wrote 15 prescriptions for Clindamycin Hcl, about 61% as often as the typical South Carolina prescriber of it (25). Medicare paid $8.50 per fill, versus $6.42 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with South Carolina prescribers
Dr. Willoughby wrote 15 prescriptions for Escitalopram Oxalate, about 25% as often as the typical South Carolina prescriber of it (59). Medicare paid $3.16 per fill, versus $11.46 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat a certain sleep problem (insomnia).
Compared with South Carolina prescribers
Dr. Willoughby wrote 15 prescriptions for Eszopiclone, about 66% as often as the typical South Carolina prescriber of it (23). Medicare paid $12.49 per fill, versus $17.30 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used alone or with other medications to treat Parkinson's disease.
Compared with South Carolina prescribers
Dr. Willoughby wrote 15 prescriptions for Ropinirole Hcl, about half as often as the typical South Carolina prescriber of it (31). Medicare paid $9.32 per fill, versus $16.42 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Diazepam is used to treat anxiety, alcohol withdrawal, and seizures.
Compared with South Carolina prescribers
Dr. Willoughby wrote 14 prescriptions for Diazepam, about half as often as the typical South Carolina prescriber of it (33). Medicare paid $0.73 per fill, versus $5.57 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat constipation caused by opioid medications in people with ongoing pain that is not caused by cancer.
Compared with South Carolina prescribers
Dr. Willoughby wrote 14 prescriptions for Movantik, about 66% as often as the typical South Carolina prescriber of it (21). Medicare paid $398.65 per fill, versus $407.79 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with South Carolina prescribers
Dr. Willoughby wrote 12 prescriptions for Diclofenac Sodium Er, about 28% as often as the typical South Carolina prescriber of it (42). Medicare paid $53.42 per fill, versus $34.52 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat constipation caused by opioid medication.
Compared with South Carolina prescribers
Dr. Willoughby wrote 12 prescriptions for Relistor, about half as often as the typical South Carolina prescriber of it (24). Medicare paid $1,652.40 per fill, versus $2,384.16 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat depression.
Compared with South Carolina prescribers
Dr. Willoughby wrote 11 prescriptions for Bupropion Xl, about 26% as often as the typical South Carolina prescriber of it (42). Medicare paid $8.83 per fill, versus $25.19 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
This medication is used to treat certain mental/mood disorders (such as depression, panic attacks, obsessive compulsive disorder).
Compared with South Carolina prescribers
Dr. Willoughby wrote 11 prescriptions for Fluoxetine Hcl, about 26% as often as the typical South Carolina prescriber of it (43). Medicare paid $1.16 per fill, versus $9.63 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
See also Warning section.
Compared with South Carolina prescribers
Dr. Willoughby wrote 11 prescriptions for Promethazine Hcl, about half as often as the typical South Carolina prescriber of it (25). Medicare paid $10.36 per fill, versus $8.98 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
What it is used for
Topiramate is used alone or with other medications to prevent and control seizures (epilepsy).
Compared with South Carolina prescribers
Dr. Willoughby wrote 11 prescriptions for Topiramate, about 35% as often as the typical South Carolina prescriber of it (31). Medicare paid $2.04 per fill, versus $11.52 statewide.
Volume reflects how many Medicare patients a practice sees as well as prescribing habits. It is not a measure of quality.
Questions about Dr. Willoughby’s prescriptions
What does Dr. Willoughby prescribe most?
In 2024 Medicare Part D data, Dr. Willoughby's most prescribed medications were Hydrocodone-Acetaminophen (1,494), Gabapentin (1,149) and Oxycodone-Acetaminophen (1,045).
How does Dr. Willoughby's prescribing compare with other South Carolina prescribers?
Of the 38 medications with a state comparison, Dr. Willoughby prescribes 19 more often than the typical South Carolina prescriber, 5 about as often and 14 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Willoughby prescribes?
No. It covers prescriptions filled by people with Medicare Part D drug coverage in 2024, and CMS leaves out any medication with fewer than 11 prescriptions.
About this data
This page shows one provider’s slice of public Medicare files. NPI Profile does not receive prescriptions or patient records.
| Source | What it provides here | Data year |
|---|---|---|
| CMS Medicare Part D Prescribers by Provider and Drug | Each medication, prescriptions, patients, 30-day fills, days of medication and cost. State comparisons average the South Carolina prescribers of the same medication and form, where at least five wrote it. | 2024 (released 2026, the most recent available) |
| CMS Medicare Part D Drug Spending Dashboard | What each medication is used for. | 2024 |
- Only prescriptions filled by people with Medicare Part D drug coverage are counted. Private insurance, Medicaid and cash purchases are not.
- CMS leaves out medications with fewer than 11 prescriptions and hides patient counts under 11.
- Cost per fill is what the plan and the patient paid the pharmacy together, not what you pay at the counter.
- Medication descriptions are summaries from CMS. They are not medical advice; ask a health care professional about any medication.
