NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1487967162 PA-C
Verify on CMS → Kristen Casey, PA-C
Medical Physician Assistant in Westbrook, 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 40,580 in Medical Physician Assistant, 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
684
Medicare Part D claims · 251 beneficiaries · Medical Physician Assistant avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Kristen Casey, PA-C filed 684 Medicare Part D claims in 2023 as a Medical Physician Assistant in Westbrook, Maine.
- 684
- Part D claims, 2023
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.
Kristen Casey, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
684 Top 31% higher than 69% 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 Kristen Casey, PA-C?
Quality data not reportedPrimary specialty
Medical Physician Assistant
Medicare Part D claims
684 36% vs specialty avg
Specialty distribution in Maine
How Medical Physician Assistant 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 Medical Physician Assistant. 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).
Kristen Casey, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 11 ROCK ROW STE 120, Westbrook, ME, 04092, with a listed phone of (207) 303-3000. NPI 1487967162 was issued on 07/22/2010.
Medicare Part D records for calendar year 2023 show 684 prescription claims written by this provider, covering 251 Medicare beneficiaries and totaling roughly $43K in drug spend, with an opioid prescribing rate of 8.0%.
Medical Physician Assistant is a mid-sized specialty nationwide, with 40,580 enrolled providers across 55 states and an average of 1,077 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 | 1487967162 |
|---|---|
| Specialty | Medical Physician Assistant |
| Credentials | PA-C |
| Gender | Female |
| NPI Issued | 07/22/2010 |
Hospital and facility affiliations
Facilities where Kristen Casey, PA-C bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
According to CMS billing records, Kristen Casey, PA-C is affiliated with 3 Medicare-billing facilities.
Maine Center For Cancer Medicine And Blood Disorders PA
Topsham, ME
Mainehealth
Portland, ME
Mercy Hospital
Portland, ME
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
684
Total Claims
$43K
Total Drug Cost
251
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,188
- Total Day Supply
- 31,440
- Generic Drug Cost
- $15K
- Opioid Claims
- 55 (8.0% rate)
- Antibiotic Claims
- 60
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.15
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 26, 65-74: 120, 75-84: 78, 85+: 27
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Kristen Casey, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Prednisone
Prednisone
32 claims
- Amlodipine Besylate
Amlodipine Besylate
27 claims
- Doxycycline Hyclate
Doxycycline Hyclate
26 claims
- Lisinopril
Lisinopril
22 claims
- Sertraline Hcl
Sertraline Hcl
21 claims
- Tramadol Hcl
Tramadol Hcl
18 claims
- Atorvastatin Calcium
Atorvastatin Calcium
17 claims
- Oxycodone Hcl
Oxycodone Hcl
16 claims
| Drug | Claims |
|---|---|
| Prednisone | 32 |
| Amlodipine Besylate | 27 |
| Doxycycline Hyclate | 26 |
| Lisinopril | 22 |
| Sertraline Hcl | 21 |
| Tramadol Hcl | 18 |
| Atorvastatin Calcium | 17 |
| Oxycodone Hcl | 16 |
| Pantoprazole Sodium | 16 |
| Levothyroxine Sodium | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Physician Assistant Overview
How Kristen Casey, PA-C fits within the Medical Physician Assistant landscape nationally.
40,580
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider
Kristen Casey, PA-C's 684 claims are below the specialty average of 1,077.
Nearby Medical Physician Assistant Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Casey.
Dr. Emily Akley
PA-C
Portland, ME
Dr. Shirley Ala
PA-C
Auburn, ME
Dr. Shermane Anderson
PAC
Bangor, ME
Dr. Jessica Arbisi
PA-C
Bangor, ME
Dr. Jennifer Arich
PA-C
Portland, ME
Compare Medical Physician Assistant 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 Medical Physician Assistant 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
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Kristen Casey, PA-C's specialty? ▼
Kristen Casey, PA-C specializes in Medical Physician Assistant and practices in Westbrook, Maine. Credentials: PA-C.
How much does Kristen Casey, PA-C prescribe under Medicare Part D? ▼
In 2023, Kristen Casey, PA-C wrote 684 Medicare Part D claims totaling $43K in drug costs for 251 beneficiaries.
Where is Kristen Casey, PA-C located? ▼
Kristen Casey, PA-C is located at 11 ROCK ROW STE 120, Westbrook, ME, 04092. Phone: (207) 303-3000.
What is Kristen Casey, PA-C's NPI number? ▼
Kristen Casey, PA-C's National Provider Identifier (NPI) is 1487967162, issued on 07/22/2010.
Does Kristen Casey, PA-C prescribe opioids? ▼
Yes, Kristen Casey, PA-C had 55 opioid claims in 2023 with an opioid prescribing rate of 8.0%.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,580 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does Kristen Casey, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Kristen Casey, PA-C's most frequently prescribed drugs include Prednisone, Amlodipine Besylate, Doxycycline Hyclate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Kristen Casey, PA-C accept Medicare? ▼
Kristen Casey, PA-C appears in CMS Medicare data with 684 Part D claims and 251 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Kristen Casey, PA-C's credentials? ▼
Kristen Casey, PA-C's NPI is 1487967162 with credentials PA-C. 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.