DR. KATHLEEN M LEWISON MD
Prescription History 1508981663
Obstetrics & Gynecology - Obstetrics in Whitefish, MT

Active since March 20, 2007PECOS EnrolledAccepts Medicare Assignment
2002 HOSPITAL WAY, WHITEFISH, MT 59937(406) 862-6436(406) 862-9978 Get Directions

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Medicare Part D Prescription History

Explore the verified Medicare Part D prescription history, volume metrics, and calculated drug costs for DR. KATHLEEN M LEWISON MD, an active Obstetrics specialist practicing in Whitefish, MT. Our medical registry currently tracks 3 unique pharmaceutical formulations prescribed by this provider, representing an estimated volume of 58 documented patient claims. Among these therapy options, the most frequently utilized medication is Progesterone, which accounts for 25 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.

3
Medications
58
Total Claims
107
30-Day Fills
Progesterone
Most Prescribed · 25 claims
View details
3 medications · 2023 Medicare Part D
Medicare Part D medications prescribed by DR. KATHLEEN M LEWISON MD in 2023, with prescription volumes, average cost per fill, and MT state comparisons
Medication Prescriptions (2023)Rx (2023) Avg Cost per FillCost / Fill Vs. Other MT PrescribersVs. MT Avg
ProgesteroneProgesterone, Micronized25$45.86 More than typical

About Progesterone: This medication is used to treat infertility in women who do not make enough of a certain natural hormone called progesterone. Show more ▾

This hormone is needed to maintain pregnancy. This medication is also used to restore menstrual cycles in women whose cycles have stopped. Progesterone is needed to keep menstrual periods regular.

In 2023, this provider wrote 25 Medicare prescriptions for Progesterone, about 1.4 times the volume of the typical Montana prescriber of this medication (18). Medicare paid an average of $45.86 per fill, versus $42.33 statewide.

How often this provider prescribes it

This provider
25
MT average
18.0

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

What Medicare paid per fill

This provider
$45.86
MT average
$42.33

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

53
30-Day Fills
standardized to 30-day supplies
1,590
Days of Medication
total across all patients in 2023
Estradiol20$93.27 Typical

About Estradiol: This medication is a female hormone (estrogen). Show more ▾

It is used by women to help reduce symptoms of menopause (such as hot flashes, vaginal dryness). These symptoms are caused by the body making less estrogen. If you are using this medication to treat symptoms only in and around the vagina, products applied directly inside the vagina should be considered before medications that are taken by mouth, absorbed through the skin, or injected. This medication may also be used by women who are not able to produce enough estrogen (for example, due to hypogonadism, primary ovarian failure). Certain estrogen products may also be used by women after menopause to prevent bone loss (osteoporosis). However, there are other medications (such as raloxifene, bisphosphonates including alendronate) that are also effective in preventing bone loss and may be safer. These medications should be considered for use before estrogen treatment. The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids.

In 2023, this provider wrote 20 Medicare prescriptions for Estradiol, about 80% of the volume of the typical Montana prescriber of this medication (25). Medicare paid an average of $93.27 per fill, versus $63.01 statewide.

How often this provider prescribes it

This provider
20
MT average
25.0

This provider's prescribing volume for this medication is in line with the average MT prescriber. Utilization reflects practice size as well as clinical preference.

What Medicare paid per fill

This provider
$93.27
MT average
$63.01

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

39
30-Day Fills
standardized to 30-day supplies
1,170
Days of Medication
total across all patients in 2023
SynthroidLevothyroxine Sodium13$46.62▼ below MT avg Less than typical

About Synthroid: 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 13 Medicare prescriptions for Synthroid, about half the volume of the typical Montana prescriber of this medication (23). Medicare paid an average of $46.62 per fill, versus $74.50 statewide.

How often this provider prescribes it

This provider
13
MT average
23.0

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

What Medicare paid per fill

This provider
$46.62
MT average
$74.50

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

15
30-Day Fills
standardized to 30-day supplies
450
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 MT prescriber of the same medication; volume reflects practice size as well as clinical preference.Green cost= below the MT average cost per fill.

About this data. The prescription history for DR. KATHLEEN M LEWISON MD 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 Obstetrics prescribing approach at this Whitefish, MT 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 MT prescribers of the same medication. Always confirm current medications and costs directly with the provider and your plan.