NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1457541773 FNP-C
Verify on CMS → Susan Chessa, FNP-C
Family Nurse Practitioner in Guilford, 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 210,832 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
552
Medicare Part D claims · 115 beneficiaries · Family Nurse Practitioner avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Susan Chessa, FNP-C filed 552 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Guilford, Maine.
- 552
- 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.
Susan Chessa, FNP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
552 Top 34% higher than 66% 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 Susan Chessa, FNP-C?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
552 55% 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).
Susan Chessa, FNP-C appears in the CMS NPPES registry as a Family Nurse Practitioner provider holding FNP-C credentials at 3 PARK ST, Guilford, ME, 04443, with a listed phone of (207) 876-3547. NPI 1457541773 was issued on 08/01/2007.
Medicare Part D records for calendar year 2023 show 552 prescription claims written by this provider, covering 115 Medicare beneficiaries and totaling roughly $130K in drug spend.
Family Nurse Practitioner is a high-volume specialty nationwide, with 210,832 enrolled providers across 56 states and an average of 1,222 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 | 1457541773 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP-C |
| Gender | Female |
| NPI Issued | 08/01/2007 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
552
Total Claims
$130K
Total Drug Cost
115
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,085
- Total Day Supply
- 31,182
- Generic Drug Cost
- $14K
Patient Demographics
- Average Patient Age
- 65.7 years
- Avg HCC Risk Score
- 1.41
- Gender Split
- 64% female / 36% male
- Age Distribution
- <65: 45, 65-74: 46, 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.
What Susan Chessa, FNP-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Rosuvastatin Calcium
Rosuvastatin Calcium
25 claims
- Amlodipine Besylate
Amlodipine Besylate
18 claims
- Pantoprazole Sodium
Pantoprazole Sodium
18 claims
- Atorvastatin Calcium
Atorvastatin Calcium
15 claims
- Omeprazole
Omeprazole
15 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
14 claims
- Hydrochlorothiazide
Hydrochlorothiazide
14 claims
- Prednisone
Prednisone
14 claims
| Drug | Claims |
|---|---|
| Rosuvastatin Calcium | 25 |
| Amlodipine Besylate | 18 |
| Pantoprazole Sodium | 18 |
| Atorvastatin Calcium | 15 |
| Omeprazole | 15 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 14 |
| Hydrochlorothiazide | 14 |
| Prednisone | 14 |
| Simvastatin | 14 |
| Trazodone Hcl | 14 |
* 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 Susan Chessa, FNP-C fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Susan Chessa, FNP-C's 552 claims are below the specialty average of 1,222.
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 Chessa.
Dr. Susan Abbott
FNP-C
Waterville, ME
Dr. Tammy Abbott
NP
Lewiston, ME
Dr. Samuel Acha
FNP-BC
Westbrook, ME
Dr. Shannon Achorn
NP
Rockland, ME
Dr. Christa Adams
FNP
Lewiston, ME
Compare Family Nurse Practitioner 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 Family Nurse Practitioner 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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How to Find a Doctor
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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
Virtual care options and coverage in 2026
Explore Maine
Frequently Asked Questions
What is Susan Chessa, FNP-C's specialty? ▼
Susan Chessa, FNP-C specializes in Family Nurse Practitioner and practices in Guilford, Maine. Credentials: FNP-C.
How much does Susan Chessa, FNP-C prescribe under Medicare Part D? ▼
In 2023, Susan Chessa, FNP-C wrote 552 Medicare Part D claims totaling $130K in drug costs for 115 beneficiaries.
Where is Susan Chessa, FNP-C located? ▼
Susan Chessa, FNP-C is located at 3 PARK ST, Guilford, ME, 04443. Phone: (207) 876-3547.
What is Susan Chessa, FNP-C's NPI number? ▼
Susan Chessa, FNP-C's National Provider Identifier (NPI) is 1457541773, issued on 08/01/2007.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Susan Chessa, FNP-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Susan Chessa, FNP-C's most frequently prescribed drugs include Rosuvastatin Calcium, Amlodipine Besylate, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Susan Chessa, FNP-C accept Medicare? ▼
Susan Chessa, FNP-C appears in CMS Medicare data with 552 Part D claims and 115 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Susan Chessa, FNP-C's credentials? ▼
Susan Chessa, FNP-C's NPI is 1457541773 with credentials FNP-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.