DR. JULIE ANN HUAT PHENCO M.D.
Prescription History 1154520708
Psychiatry & Neurology - Psychiatry in Folsom, CA
What does Dr. Phenco prescribe?
In 2024, Dr. Phenco wrote 2,652 Medicare prescriptions for 47 medications. The most prescribed was Benztropine Mesylate, with 312 prescriptions for 29 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. Phenco prescribes.
Medications 47 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 California prescribers.
What it is used for
Benztropine is used to treat symptoms of Parkinson's disease or involuntary movements due to the side effects of certain psychiatric drugs (antipsychotics such as chlorpromazine/haloperidol).
Compared with California prescribers
Dr. Phenco wrote 312 prescriptions for Benztropine Mesylate, about 6.1 times as often as the typical California prescriber of it (51). Medicare paid $16.61 per fill, versus $12.47 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 California prescribers
Dr. Phenco wrote 292 prescriptions for Clozapine, about 5.3 times as often as the typical California prescriber of it (55). Medicare paid $60.32 per fill, versus $76.09 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 schizophrenia, bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 221 prescriptions for Olanzapine, about 4.3 times as often as the typical California prescriber of it (52). Medicare paid $71.55 per fill, versus $24.98 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
Gabapentin is used with other medications to prevent and control seizures.
Compared with California prescribers
Dr. Phenco wrote 156 prescriptions for Gabapentin, about 1.9 times as often as the typical California prescriber of it (80). Medicare paid $29.44 per fill, versus $15.63 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
This medication is used to treat certain mental/mood disorders (such as schizophrenia, bipolar disorder, sudden episodes of mania or depression associated with bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 139 prescriptions for Quetiapine Fumarate, about 2.5 times as often as the typical California prescriber of it (55). Medicare paid $63.04 per fill, versus $19.69 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 schizophrenia, bipolar disorder, irritability associated with autistic disorder).
Compared with California prescribers
Dr. Phenco wrote 122 prescriptions for Risperidone, about 2.5 times as often as the typical California prescriber of it (49). Medicare paid $38.96 per fill, versus $13.84 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 California prescribers
Dr. Phenco wrote 89 prescriptions for Trazodone Hcl, about 1.6 times as often as the typical California prescriber of it (57). Medicare paid $17.14 per fill, versus $9.93 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
This medication is used to treat certain mental/mood disorders (such as schizophrenia, schizoaffective disorder).
Compared with California prescribers
Dr. Phenco wrote 88 prescriptions for Invega Sustenna, about 2.4 times as often as the typical California prescriber of it (37). Medicare paid $3,295.61 per fill, versus $3,003.69 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 schizophrenia, schizoaffective disorders).
Compared with California prescribers
Dr. Phenco wrote 87 prescriptions for Haloperidol, about 2.4 times as often as the typical California prescriber of it (36). Medicare paid $44.05 per fill, versus $34.79 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
This medication is used to treat seizure disorders, certain psychiatric conditions (manic phase of bipolar disorder), and to prevent migraine headaches.
Compared with California prescribers
Dr. Phenco wrote 80 prescriptions for Divalproex Sodium, about 1.7 times as often as the typical California prescriber of it (48). Medicare paid $23.21 per fill, versus $38.94 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 seizure disorders, mental/mood conditions (such as manic phase of bipolar disorder), and to prevent migraine headaches.
Compared with California prescribers
Dr. Phenco wrote 72 prescriptions for Divalproex Sodium Er, about 2 times as often as the typical California prescriber of it (37). Medicare paid $79.28 per fill, versus $51.64 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 manic-depressive disorder (bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 72 prescriptions for Lithium Carbonate, about 2.4 times as often as the typical California prescriber of it (30). Medicare paid $12.38 per fill, versus $11.55 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 beta blocker used to treat high blood pressure, irregular heartbeats, shaking (tremors), and other conditions.
Compared with California prescribers
Dr. Phenco wrote 55 prescriptions for Propranolol Hcl, about 2.2 times as often as the typical California prescriber of it (25). Medicare paid $10.78 per fill, versus $20.69 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
Glycopyrrolate is used with other drugs to treat a certain type of stomach/intestinal ulcer (peptic ulcer).
Compared with California prescribers
Dr. Phenco wrote 52 prescriptions for Glycopyrrolate, about 2.2 times as often as the typical California prescriber of it (24). Medicare paid $30.13 per fill, versus $39.11 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
Clonazepam is used to prevent and control seizures.
Compared with California prescribers
Dr. Phenco wrote 50 prescriptions for Clonazepam, about 1.2 times as often as the typical California prescriber of it (40). Medicare paid $13.62 per fill, versus $7.09 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
Hydroxyzine is used to treat itching caused by allergies.
Compared with California prescribers
Dr. Phenco wrote 47 prescriptions for Hydroxyzine Hcl, about 1.7 times as often as the typical California prescriber of it (28). Medicare paid $16.93 per fill, versus $13.85 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 manic-depressive disorder (bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 47 prescriptions for Lithium Carbonate Er, about 2.3 times as often as the typical California prescriber of it (21). Medicare paid $16.73 per fill, versus $18.09 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 California prescribers
Dr. Phenco wrote 45 prescriptions for Clozapine Odt, about as often as the typical California prescriber of it (40). Medicare paid $423.36 per fill, versus $462.88 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 bipolar disorder, schizophrenia, Tourette's syndrome, and irritability associated with autistic disorder).
Compared with California prescribers
Dr. Phenco wrote 41 prescriptions for Aripiprazole, about as often as the typical California prescriber of it (43). Medicare paid $159.56 per fill, versus $71.35 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 schizophrenia, schizoaffective disorder).
Compared with California prescribers
Dr. Phenco wrote 36 prescriptions for Paliperidone Er, about 1.4 times as often as the typical California prescriber of it (26). Medicare paid $316.66 per fill, versus $197.53 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
Prazosin is used with or without other medications to treat high blood pressure.
Compared with California prescribers
Dr. Phenco wrote 34 prescriptions for Prazosin Hcl, about 1.3 times as often as the typical California prescriber of it (26). Medicare paid $34.28 per fill, versus $19.19 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 before eye examinations (such as refraction) and to treat certain eye conditions (such as uveitis).
Compared with California prescribers
Dr. Phenco wrote 30 prescriptions for Atropine Sulfate, about 1.2 times as often as the typical California prescriber of it (25). Medicare paid $28.18 per fill, versus $37.90 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 anxiety.
Compared with California prescribers
Dr. Phenco wrote 29 prescriptions for Buspirone Hcl, about 79% as often as the typical California prescriber of it (37). Medicare paid $16.76 per fill, versus $13.30 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 to prevent people who have been addicted to certain drugs (opiates) from taking them again.
Compared with California prescribers
Dr. Phenco wrote 29 prescriptions for Naltrexone Hcl, about 1.4 times as often as the typical California prescriber of it (21). Medicare paid $31.84 per fill, versus $43.53 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 schizophrenia, bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 28 prescriptions for Ziprasidone Hcl, about as often as the typical California prescriber of it (26). Medicare paid $65.31 per fill, versus $60.41 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 schizophrenia, depression associated with bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 27 prescriptions for Lurasidone Hcl, about 86% as often as the typical California prescriber of it (32). Medicare paid $353.53 per fill, versus $292.84 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, panic attacks, and social anxiety disorder).
Compared with California prescribers
Dr. Phenco wrote 26 prescriptions for Venlafaxine Hcl Er, about as often as the typical California prescriber of it (28). Medicare paid $49.45 per fill, versus $23.92 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 mental/mood disorder (schizophrenia).
Compared with California prescribers
Dr. Phenco wrote 25 prescriptions for Aristada, about 1.2 times as often as the typical California prescriber of it (21). Medicare paid $2,572.87 per fill, versus $2,793.18 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
Oxcarbazepine is used alone or with other medications to treat seizure disorders (epilepsy).
Compared with California prescribers
Dr. Phenco wrote 24 prescriptions for Oxcarbazepine, about as often as the typical California prescriber of it (27). Medicare paid $42.31 per fill, versus $57.55 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, post-traumatic stress disorder, social anxiety disorder).
Compared with California prescribers
Dr. Phenco wrote 24 prescriptions for Sertraline Hcl, about half as often as the typical California prescriber of it (46). Medicare paid $36.93 per fill, versus $9.59 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 schizophrenia, bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 23 prescriptions for Olanzapine Odt, about half as often as the typical California prescriber of it (40). Medicare paid $87.89 per fill, versus $98.59 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 California prescribers
Dr. Phenco wrote 21 prescriptions for Escitalopram Oxalate, about half as often as the typical California prescriber of it (48). Medicare paid $16.56 per fill, versus $11.14 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 treat obsessive-compulsive disorder (OCD).
Compared with California prescribers
Dr. Phenco wrote 21 prescriptions for Fluvoxamine Maleate, about as often as the typical California prescriber of it (23). Medicare paid $26.47 per fill, versus $40.43 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
Levothyroxine is used to treat an underactive thyroid (hypothyroidism).
Compared with California prescribers
Dr. Phenco wrote 20 prescriptions for Levothyroxine Sodium, about 16% as often as the typical California prescriber of it (125). Medicare paid $12.30 per fill, versus $13.30 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
Lamotrigine is used alone or with other medications to prevent and control seizures.
Compared with California prescribers
Dr. Phenco wrote 18 prescriptions for Lamotrigine, about half as often as the typical California prescriber of it (39). Medicare paid $10.59 per fill, versus $14.45 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
This medication is used to treat alcohol abuse.
Compared with California prescribers
Dr. Phenco wrote 17 prescriptions for Vivitrol, about as often as the typical California prescriber of it (16). Medicare paid $1,761.76 per fill, versus $1,596.02 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 California prescribers
Dr. Phenco wrote 16 prescriptions for Mirtazapine, about 40% as often as the typical California prescriber of it (40). Medicare paid $20.24 per fill, versus $19.05 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 schizophrenia, psychotic disorders, manic phase of bipolar disorder, severe behavioral problems in children).
Compared with California prescribers
Dr. Phenco wrote 15 prescriptions for Chlorpromazine Hcl, about half as often as the typical California prescriber of it (28). Medicare paid $222.66 per fill, versus $272.97 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
Trihexyphenidyl is used to treat symptoms of Parkinson's disease or involuntary movements due to the side effects of certain psychiatric drugs (antipsychotics such as chlorpromazine/haloperidol).
Compared with California prescribers
Dr. Phenco wrote 15 prescriptions for Trihexyphenidyl Hcl, about 64% as often as the typical California prescriber of it (23). Medicare paid $7.74 per fill, versus $12.84 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 California prescribers
Dr. Phenco wrote 14 prescriptions for Citalopram Hbr, about half as often as the typical California prescriber of it (30). Medicare paid $7.43 per fill, versus $8.24 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 California prescribers
Dr. Phenco wrote 14 prescriptions for Fluoxetine Hcl, about half as often as the typical California prescriber of it (33). Medicare paid $14.24 per fill, versus $11.85 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
Hydroxyzine is used to treat itching caused by allergies.
Compared with California prescribers
Dr. Phenco wrote 14 prescriptions for Hydroxyzine Pamoate, about half as often as the typical California prescriber of it (29). Medicare paid $14.62 per fill, versus $10.86 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
This medication is a laxative used to treat constipation.
Compared with California prescribers
Dr. Phenco wrote 14 prescriptions for Lactulose, about half as often as the typical California prescriber of it (29). Medicare paid $19.11 per fill, versus $52.96 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 schizophrenia, depression).
Compared with California prescribers
Dr. Phenco wrote 14 prescriptions for Rexulti, about half as often as the typical California prescriber of it (28). Medicare paid $1,424.08 per fill, versus $1,455.30 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 to treat certain mental/mood disorders (such as schizophrenia, bipolar disorder, sudden episodes of mania or depression associated with bipolar disorder).
Compared with California prescribers
Dr. Phenco wrote 13 prescriptions for Quetiapine Fumarate Er, about half as often as the typical California prescriber of it (28). Medicare paid $136.29 per fill, versus $62.79 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
This medication is used to treat certain mental/mood disorders (such as depression, anxiety).
Compared with California prescribers
Dr. Phenco wrote 12 prescriptions for Duloxetine Hcl, about 30% as often as the typical California prescriber of it (40). Medicare paid $18.61 per fill, versus $24.72 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
Famotidine is used to treat ulcers of the stomach and intestines and to prevent intestinal ulcers from coming back after they have healed.
Compared with California prescribers
Dr. Phenco wrote 12 prescriptions for Famotidine, about 22% as often as the typical California prescriber of it (54). Medicare paid $9.84 per fill, versus $12.66 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. Phenco’s prescriptions
What does Dr. Phenco prescribe most?
In 2024 Medicare Part D data, Dr. Phenco's most prescribed medications were Benztropine Mesylate (312), Clozapine (292) and Olanzapine (221).
How does Dr. Phenco's prescribing compare with other California prescribers?
Of the 47 medications with a state comparison, Dr. Phenco prescribes 19 more often than the typical California prescriber, 12 about as often and 16 less often. Volume reflects practice size as well as prescribing habits.
Does this list show every medication Dr. Phenco 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 California 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.
