NPI registry status
Active
2026 NPPES data Pharmacist NPI 1598313785 PHARMD
Verify on CMS → Cassandra Chapdelaine, PHARMD
Pharmacist in Waterville, Maine.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 291,043 in Pharmacist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
253
Medicare Part D claims · 244 beneficiaries · Pharmacist avg: 135
Generic prescribing
0%
generic claims · >99% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Cassandra Chapdelaine, PHARMD filed 253 Medicare Part D claims in 2023 as a Pharmacist in Waterville, Maine, prescribing 0% generic.
- 253
- Part D claims, 2023
- 0%
- generic prescribing
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Cassandra Chapdelaine, PHARMD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
253 49th percentile higher than 49% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Cassandra Chapdelaine, PHARMD?
Quality data not reportedPrimary specialty
Pharmacist
Medicare Part D claims
253 87% vs specialty avg
Specialty distribution in Maine
How Pharmacist compares to other specialties among Maine providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Pharmacist. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Cassandra Chapdelaine, PHARMD appears in the CMS NPPES registry as a Pharmacist provider holding PHARMD credentials at 251 KENNEDY MEMORIAL DR, Waterville, ME, 04901, with a listed phone of (207) 680-3001. NPI 1598313785 was issued on 08/30/2019.
Medicare Part D records for calendar year 2023 show 253 prescription claims written by this provider, covering 244 Medicare beneficiaries and totaling roughly $73K in drug spend, split >99% brand-name and 0% generic by claim count.
Pharmacist is a high-volume specialty nationwide, with 291,043 enrolled providers across 56 states and an average of 135 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1598313785 |
|---|---|
| Specialty | Pharmacist |
| Credentials | PHARMD |
| Gender | Female |
| NPI Issued | 08/30/2019 |
Brand vs generic prescribing mix · Brand-heavy
Cassandra Chapdelaine, PHARMD - brand share 99.0%
Pharmacist average
>99% brand-name claims vs 0% generic, on 253 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
253
Total Claims
$73K
Total Drug Cost
244
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 253
- Total Day Supply
- 253
- Brand vs Generic
- >99% brand / 0% generic
- Brand Drug Cost
- $72K
Patient Demographics
- Average Patient Age
- 74.2 years
- Avg HCC Risk Score
- 0.90
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 11, 65-74: 120, 75-84: 99, 85+: 14
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Arexvy Rsvpref3 Antigen/As01e/Pf | 205 |
| Shingrix Varicella-Zoster Ge/As01b/Pf | 33 |
| Boostrix Tdap "Diphth | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pharmacist Overview
How Cassandra Chapdelaine, PHARMD fits within the Pharmacist landscape nationally.
291,043
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider
Cassandra Chapdelaine, PHARMD's 253 claims are above the specialty average of 135.
Nearby Pharmacist Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Chapdelaine.
Dr. Faisal Abdillahi
PHARMD
Kennebunk, ME
Dr. Naima Abdirhmon
PHARMD
Portland, ME
Dr. Momenjan Abdullayof
PHARMACIST
South Portland, ME
Dr. Hani Abi Younes
BS PHARMACY
Bangor, ME
Dr. Gloria Achufuna-Okeke
PHARMACIST
Bangor, ME
Compare Pharmacist nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Maine medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Pharmacist peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
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Explore Maine
Frequently Asked Questions
What is Cassandra Chapdelaine, PHARMD's specialty? ▼
Cassandra Chapdelaine, PHARMD specializes in Pharmacist and practices in Waterville, Maine. Credentials: PHARMD.
How much does Cassandra Chapdelaine, PHARMD prescribe under Medicare Part D? ▼
In 2023, Cassandra Chapdelaine, PHARMD wrote 253 Medicare Part D claims totaling $73K in drug costs for 244 beneficiaries.
Where is Cassandra Chapdelaine, PHARMD located? ▼
Cassandra Chapdelaine, PHARMD is located at 251 KENNEDY MEMORIAL DR, Waterville, ME, 04901. Phone: (207) 680-3001.
What is Cassandra Chapdelaine, PHARMD's NPI number? ▼
Cassandra Chapdelaine, PHARMD's National Provider Identifier (NPI) is 1598313785, issued on 08/30/2019.
Does Cassandra Chapdelaine, PHARMD prescribe more brand-name or generic drugs? ▼
Cassandra Chapdelaine, PHARMD's prescribing is >99% brand-name and 0% generic drugs by claim count, with $72K in brand drug costs.
How many Pharmacist providers are there in the US? ▼
There are 291,043 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does Cassandra Chapdelaine, PHARMD prescribe most often? ▼
Based on 2023 Medicare Part D data, Cassandra Chapdelaine, PHARMD's most frequently prescribed drugs include Arexvy, Shingrix, Boostrix Tdap. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Cassandra Chapdelaine, PHARMD accept Medicare? ▼
Cassandra Chapdelaine, PHARMD appears in CMS Medicare data with 253 Part D claims and 244 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cassandra Chapdelaine, PHARMD's credentials? ▼
Cassandra Chapdelaine, PHARMD's NPI is 1598313785 with credentials PHARMD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.