NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1730198029 PA
Verify on CMS → Mary-Ellen Dalzell, PA
Physician Assistant in York, 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 149,975 in 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
66
Medicare Part D claims · 49 beneficiaries · Physician Assistant avg: 790
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Mary-Ellen Dalzell, PA filed 66 Medicare Part D claims in 2023 as a Physician Assistant in York, Maine.
- 66
- 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.
Mary-Ellen Dalzell, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
66 0th percentile higher than 0% 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 Mary-Ellen Dalzell, PA?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
66 92% vs specialty avg
Specialty distribution in Maine
How 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 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).
Mary-Ellen Dalzell, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 15 HOSPITAL DR, York, ME, 03909, with a listed phone of (207) 363-4321. NPI 1730198029 was issued on 08/05/2006.
Medicare Part D records for calendar year 2023 show 66 prescription claims written by this provider, covering 49 Medicare beneficiaries and totaling roughly $1K in drug spend.
Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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 | 1730198029 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Female |
| NPI Issued | 08/05/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
66
Total Claims
$1K
Total Drug Cost
49
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 66
- Total Day Supply
- 604
- Generic Drug Cost
- $633
- Antibiotic Claims
- 35
Patient Demographics
- Average Patient Age
- 68.7 years
- Avg HCC Risk Score
- 1.39
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 12, 65-74: 20, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Cephalexin | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Mary-Ellen Dalzell, PA fits within the Physician Assistant landscape nationally.
149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Mary-Ellen Dalzell, PA's 66 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Dalzell.
Yusuf Abdi
Oakland, ME
Dr. Joshua Abrams
PA-C
Portland, ME
Dr. Haley Acker
PA-C
Portland, ME
Dr. Mary Adorisio
PA-C
Biddeford, ME
Dr. Bobak Ahouraie
PA
Sanford, ME
Compare 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 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
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
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
Virtual care options and coverage in 2026
Explore Maine
Frequently Asked Questions
What is Mary-Ellen Dalzell, PA's specialty? ▼
Mary-Ellen Dalzell, PA specializes in Physician Assistant and practices in York, Maine. Credentials: PA.
How much does Mary-Ellen Dalzell, PA prescribe under Medicare Part D? ▼
In 2023, Mary-Ellen Dalzell, PA wrote 66 Medicare Part D claims totaling $1K in drug costs for 49 beneficiaries.
Where is Mary-Ellen Dalzell, PA located? ▼
Mary-Ellen Dalzell, PA is located at 15 HOSPITAL DR, York, ME, 03909. Phone: (207) 363-4321.
What is Mary-Ellen Dalzell, PA's NPI number? ▼
Mary-Ellen Dalzell, PA's National Provider Identifier (NPI) is 1730198029, issued on 08/05/2006.
How many Physician Assistant providers are there in the US? ▼
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Mary-Ellen Dalzell, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Mary-Ellen Dalzell, PA's most frequently prescribed drugs include Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mary-Ellen Dalzell, PA accept Medicare? ▼
Mary-Ellen Dalzell, PA appears in CMS Medicare data with 66 Part D claims and 49 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mary-Ellen Dalzell, PA's credentials? ▼
Mary-Ellen Dalzell, PA's NPI is 1730198029 with credentials PA. 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.