NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1639892763 FNPC
Verify on CMS → Ian Ainsworth, FNPC
Family Nurse Practitioner in Belfast, 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 216,959 in Family Nurse Practitioner, 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
195
Medicare Part D claims · 125 beneficiaries · Family Nurse Practitioner avg: 1K
What the federal data shows
Ian Ainsworth, FNPC filed 195 Medicare Part D claims in 2024 as a Family Nurse Practitioner in Belfast, Maine.
- 195
- Part D claims, 2024
- ≥34th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Ian Ainsworth, FNPC
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639892763), first enumerated 09/23/2022.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 195 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1639892763 · Family Nurse Practitioner
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1639892763
- ENUM-RECENT 2022
- TAX-MEGA 217K Family Nurse
- RX-LIGHT 195
- BOOK-LIGHT 1,165 in Maine
- PHOTO-ENUM Chelsea Rodriquez · 2022
Ian Ainsworth, FNPC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
195 ≥ 34th percentile 34% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Ian Ainsworth, FNPC?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
195 85% vs specialty avg
Specialty distribution in Maine
How Family Nurse Practitioner 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 Family Nurse Practitioner. 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).
Practice Address
Provider Details
| NPI | 1639892763 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNPC |
| Gender | Male |
| NPI Issued | 09/23/2022 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
195
Total Claims
$2K
Total Drug Cost
125
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 206.9
- Total Day Supply
- 2,182
- Generic Drug Cost
- $1K
- Antibiotic Claims
- 99
Patient Demographics
- Average Patient Age
- 66.6 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 37, 65-74: 55, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Ian Ainsworth, FNPC prescribes most
Top Medicare Part D drugs by claim count, 2024
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
31 claims
- Prednisone
Prednisone
31 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
19 claims
- Azithromycin
Azithromycin
17 claims
- Cephalexin
Cephalexin
13 claims
| Drug | Claims |
|---|---|
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 31 |
| Prednisone | 31 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 19 |
| Azithromycin | 17 |
| Cephalexin | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Ian Ainsworth, FNPC fits within the Family Nurse Practitioner landscape nationally.
216,959
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,302
Avg Claims per Provider
Ian Ainsworth, FNPC's 195 claims are below the specialty average of 1,302.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Ainsworth, both outside Maine so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2022)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Nurse Practitioner Providers in Maine
Other clinicians with the same primary specialty enrolled in Maine, drawn from the same CMS NPPES roster as Ainsworth.
One of 1,165 Family Nurse Practitioner providers enrolled in Maine, 5 are shown here.
Susan Abbott
FNP-C
Waterville, ME
Tammy Abbott
NP
Lewiston, ME
Samuel Acha
FNP-BC
Westbrook, ME
Shannon Achorn
NP
Rockland, ME
Christa Adams
FNP
Lewiston, ME
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Ian Ainsworth, FNPC's specialty? ▼
Ian Ainsworth, FNPC specializes in Family Nurse Practitioner and practices in Belfast, Maine. Credentials: FNPC.
How much does Ian Ainsworth, FNPC prescribe under Medicare Part D? ▼
In 2024, Ian Ainsworth, FNPC wrote 195 Medicare Part D claims totaling $2K in drug costs for 125 beneficiaries.
Where is Ian Ainsworth, FNPC located? ▼
Ian Ainsworth, FNPC is located at 53 SCHOODIC DR, Belfast, ME, 04915. Phone: (207) 338-6900.
What is Ian Ainsworth, FNPC's NPI number? ▼
Ian Ainsworth, FNPC's National Provider Identifier (NPI) is 1639892763, issued on 09/23/2022.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 216,959 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,302 Medicare Part D claims per year.
What drugs does Ian Ainsworth, FNPC prescribe most often? ▼
Based on 2024 Medicare Part D data, Ian Ainsworth, FNPC's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Prednisone, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ian Ainsworth, FNPC accept Medicare? ▼
Ian Ainsworth, FNPC appears in CMS Medicare data with 195 Part D claims and 125 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ian Ainsworth, FNPC's credentials? ▼
Ian Ainsworth, FNPC's NPI is 1639892763 with credentials FNPC. 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 (2024). 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 August 2026 (NPPES) / 2024 (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
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 August 2026.