Darla L. O'shaughnessy , NP
Nurse Practitioner • Danville, IL
311 W. Fairchild Street, Adult Medicine
Danville, IL 61832
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Darla O'Shaughnessy is listed in NPPES under Nurse Practitioner.
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NPI assigned on January 15, 2007; this date does not establish years in practice.
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Published CMS data list 36 Medicare Part D prescriptions, including refills, in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Published rows only; this is not a quality measure.
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Published Part D records, 2021:
- Estradiol — 13 prescription fills, including refills.
- Nystatin-Triamcinolone (Nystatin/Triamcin) — 12 prescription fills, including refills.
- Acyclovir — 11 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Medicare Part D prescriptions went from 237 in 2017 to 36 in 2021.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2017–2021.
Practice Location & Contact Primary Location
311 W. Fairchild Street
Adult Medicine
Danville, IL 61832
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
46 standardized 30-day fills in 2021
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$1,417 in 2021
The total cost of these prescriptions in 2021, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2021.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2021–2025.
NPI first issued
2007
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Danville and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Darla O'Shaughnessy are from 2021.
33 active clinicians are listed under Nurse Practitioner with a practice address in Danville, IL (4,894 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Danville
9.1% of these 33 clinicians have the CMS telehealth indicator.
42.4% of these 33 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 85% from 237 in 2017 to 36 in 2021.
- 2017: 237
- 2018: 234
- 2019: 231
- 2020: 212
- 2021: 36
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30-day fills
30-day fills decreased 87% from 347 in 2017 to 46 in 2021.
- 2017: 347
- 2018: 335
- 2019: 274
- 2020: 263
- 2021: 46
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Part D drug cost
Part D drug cost decreased 87% from $10,897 in 2017 to $1,417 in 2021.
- 2017: $10,897
- 2018: $14,470
- 2019: $9,843
- 2020: $6,807
- 2021: $1,417
Sources: CMS Medicare Part D Prescribers (2021), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2021.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Estradiol | Estradiol | 13 | 482 | $1,009.43 | — |
| Nystatin-Triamcinolone | Nystatin/Triamcin | 12 | 180 | $305.36 | — |
| Acyclovir | Acyclovir | 11 | 510 | $101.98 | — |
Source: CMS Part D by Provider and Drug, 2021; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Psychiatry
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant
Career & Practice History
NPI enumerated January 15, 2007.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Nurse Practitioners in Danville
- Bradley Grissom, NP
- Peggy Wolpert, CNP
- Maureen Donofrio, NP
- Amanda Spezia, APN
- Lacey Youhas, APN
- Russia Vega, NP
Mailing Address
611 W Park St, Bwpc
Urbana, IL 618012529
Phone: 2173836792