ANTHONY CHRISTOPHER STACK DO
Prescription History 1912491663
Internal Medicine - Medical Oncology in Philadelphia, PA

Active since June 17, 2018PECOS EnrolledAccepts Medicare Assignment
3401 N BROAD ST, PHILADELPHIA, PA 19140(215) 707-2000 Get Directions

NPPES record last updated: November 5, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Nov 5, 2025, Jun 22, 2021, Jun 18, 2018 and 1 more (4 updates tracked since 2018).

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for ANTHONY CHRISTOPHER STACK DO, an active Medical Oncology specialist practicing in Philadelphia, PA. Our medical registry currently tracks 6 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 101 documented patient claims. Among these therapy options, the most frequently utilized medication is Prednisone, which accounts for 33 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.

6
Medications
101
Total Claims
103
30-Day Fills
Prednisone
Most Prescribed · 33 claims
View details
6 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by ANTHONY CHRISTOPHER STACK DO in 2023, with prescription volumes, average cost per fill, and PA state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other PA PrescribersVs. PA Avg

About Prednisone: Prednisone is used to treat conditions such as arthritis, blood disorders, breathing problems, severe allergies, skin diseases, cancer, eye problems, and immune system disorders. Show more ▾

Prednisone belongs to a class of drugs known as corticosteroids. It decreases your immune system's response to various diseases to reduce symptoms such as swelling and allergic-type reactions. A synthetic anti-inflammatory glucocorticoid derived from CORTISONE. It is biologically inert and converted to PREDNISOLONE in the liver.

In 2023, this provider wrote 33 Medicare prescriptions for Prednisone, about 69% of the volume of the typical Pennsylvania prescriber of this medication (48). Medicare paid an average of $33.77 per fill, versus $5.96 statewide.

How often this provider prescribes it

This provider
33
PA average
48.0

This provider prescribes this medication less often than the average PA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$33.77
PA average
$5.96

Gross Part D cost per fill; not the patient's out-of-pocket price.

33
30-Day Fills
standardized to 30-day supplies
911
Days of Medication
total across all patients in 2023

About Levothyroxine Sodium: Levothyroxine is used to treat an underactive thyroid (hypothyroidism). Show more ▾

It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery. Having enough thyroid hormone is important for maintaining normal mental and physical activity. In children, having enough thyroid hormone is important for normal mental and physical development. This medication is also used to treat other types of thyroid disorders (such as thyroid cancer). This medication should not be used to treat infertility unless it is caused by low thyroid hormone levels. The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (MONOIODOTYROSINE) and the coupling of iodotyrosines (DIIODOTYROSINE) in the THYROGLOBULIN. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form TRIIODOTHYRONINE which exerts a broad spectrum of stimulatory effects on cell metabolism.

In 2023, this provider wrote 17 Medicare prescriptions for Levothyroxine Sodium, about 10% of the volume of the typical Pennsylvania prescriber of this medication (171). Medicare paid an average of $9.89 per fill, versus $16.47 statewide.

How often this provider prescribes it

This provider
17
PA average
171.0

This provider prescribes this medication less often than the average PA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$9.89
PA average
$16.47

This provider's average cost per fill is below the PA average for this medication.

17
30-Day Fills
standardized to 30-day supplies
510
Days of Medication
total across all patients in 2023

About Ondansetron Hcl: This medication is used alone or with other medications to prevent nausea and vomiting caused by cancer drug treatment (chemotherapy) and radiation therapy. Show more ▾

It is also used to prevent and treat nausea and vomiting after surgery. It works by blocking one of the body's natural substances (serotonin) that causes vomiting.

In 2023, this provider wrote 15 Medicare prescriptions for Ondansetron Hcl, about half the volume of the typical Pennsylvania prescriber of this medication (26). Medicare paid an average of $16.74 per fill, versus $15.25 statewide.

How often this provider prescribes it

This provider
15
PA average
26.0

This provider prescribes this medication less often than the average PA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$16.74
PA average
$15.25

Gross Part D cost per fill; not the patient's out-of-pocket price.

15
30-Day Fills
standardized to 30-day supplies
150
Days of Medication
total across all patients in 2023

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 2023, this provider wrote 13 Medicare prescriptions for Oxycodone Hcl, about a quarter of the volume of the typical Pennsylvania prescriber of this medication (54). Medicare paid an average of $16.73 per fill, versus $22.66 statewide.

How often this provider prescribes it

This provider
13
PA average
54.0

This provider prescribes this medication less often than the average PA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$16.73
PA average
$22.66

This provider's average cost per fill is below the PA average for this medication.

13
30-Day Fills
standardized to 30-day supplies
153
Days of Medication
total across all patients in 2023

About Potassium Chloride: This medication is a mineral supplement used to treat or prevent low amounts of potassium in the blood. Show more ▾

A normal level of potassium in the blood is important. Potassium helps your cells, kidneys, heart, muscles, and nerves work properly. Most people get enough potassium by eating a well-balanced diet. Some conditions that can lower your body's potassium level include severe prolonged diarrhea and vomiting, hormone problems such as hyperaldosteronism, or treatment with water pills/diuretics. A white crystal or crystalline powder used in BUFFERS; FERTILIZERS; and EXPLOSIVES. It can be used to replenish ELECTROLYTES and restore WATER-ELECTROLYTE BALANCE in treating HYPOKALEMIA.

In 2023, this provider wrote 12 Medicare prescriptions for Potassium Chloride, about 17% of the volume of the typical Pennsylvania prescriber of this medication (70). Medicare paid an average of $16.31 per fill, versus $30.86 statewide.

How often this provider prescribes it

This provider
12
PA average
70.0

This provider prescribes this medication less often than the average PA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$16.31
PA average
$30.86

This provider's average cost per fill is below the PA average for this medication.

14
30-Day Fills
standardized to 30-day supplies
382
Days of Medication
total across all patients in 2023

About Acyclovir: Acyclovir is used to treat infections caused by certain types of viruses. Show more ▾

It treats cold sores around the mouth (caused by herpes simplex), shingles (caused by herpes zoster), and chickenpox. This medication is also used to treat outbreaks of genital herpes. In people with frequent outbreaks, acyclovir is used to help reduce the number of future episodes. Acyclovir is an antiviral drug. However, it is not a cure for these infections. The viruses that cause these infections continue to live in the body even between outbreaks. Acyclovir decreases the severity and length of these outbreaks. It helps the sores heal faster, keeps new sores from forming, and decreases pain/itching. This medication may also help reduce how long pain remains after the sores heal. In addition, in people with a weakened immune system, acyclovir can decrease the risk of the virus spreading to other parts of the body and causing serious infections. A GUANOSINE analog that acts as an antimetabolite. Viruses are especially susceptible. Used especially against herpes.

In 2023, this provider wrote 11 Medicare prescriptions for Acyclovir, about a third of the volume of the typical Pennsylvania prescriber of this medication (27). Medicare paid an average of $34.40 per fill, versus $26.32 statewide.

How often this provider prescribes it

This provider
11
PA average
27.0

This provider prescribes this medication less often than the average PA prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$34.40
PA average
$26.32

Gross Part D cost per fill; not the patient's out-of-pocket price.

11
30-Day Fills
standardized to 30-day supplies
330
Days of Medication
total across all patients in 2023
No medications match the current filters.
More than typical Typical Less than typical= prescription volume vs the average PA prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the PA average cost per fill.

About this data. The prescription history for ANTHONY CHRISTOPHER STACK DO is compiled from the Centers for Medicare & Medicaid Services (CMS) Medicare Part D Prescriber Public Use File for calendar year 2023, 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 Medical Oncology prescribing approach at this Philadelphia, PA 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 volume among PA prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.