NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1083858716 FNP-C
Verify on CMS → Susan Castle, FNP-C
Family Nurse Practitioner in Decatur, Georgia.
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
449
Medicare Part D claims · 78 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
82%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Susan Castle, FNP-C filed 449 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Decatur, Georgia, prescribing 82% generic.
- 449
- Part D claims, 2023
- 82%
- generic prescribing
- ≥62nd
- 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 Susan Castle, FNP-C
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1083858716), first enumerated 04/24/2009.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 449 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- 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 1083858716 · Family Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1083858716
- ENUM-MID 2009
- TAX-MEGA 211K Family Nurse
- RX-LIGHT 449
- BOOK-MID 7,908 in Georgia
- PHOTO-ENUM Linda Shealy · 2009
Susan Castle, FNP-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
449 ≥ 62nd percentile 62% of 1,370,886 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 · 2023
What does the federal data show about Susan Castle, FNP-C?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
449 63% vs specialty avg
Specialty distribution in Georgia
How Family Nurse Practitioner compares to other specialties among Georgia 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 | 1083858716 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | FNP-C |
| Gender | Female |
| NPI Issued | 04/24/2009 |
Hospital and facility affiliations
Facilities where Susan Castle, FNP-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.
Whole Family Medicine, LLC
Decatur, GA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Typical
Susan Castle, FNP-C - brand share 16.0%
Family Nurse Practitioner average
16% brand-name claims vs 82% generic, on 449 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.
449
Total Claims
$36K
Total Drug Cost
78
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 869
- Total Day Supply
- 24,389
- Brand vs Generic
- 16% brand / 82% generic
- Brand Drug Cost
- $28K
- Generic Drug Cost
- $7K
- Antibiotic Claims
- 26
Patient Demographics
- Average Patient Age
- 73.0 years
- Avg HCC Risk Score
- 0.85
- Gender Split
- 72% female / 28% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Susan Castle, FNP-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Lisinopril
Lisinopril
34 claims
- Levothyroxine Sodium
Levothyroxine Sodium
31 claims
- Bupropion Xl
Bupropion Xl
18 claims
- Fluoxetine Hcl
Fluoxetine Hcl
18 claims
- Amlodipine Besylate
Amlodipine Besylate
15 claims
- Alendronate Sodium
Alendronate Sodium
14 claims
- Eliquis
Eliquis
14 claims
- Telmisartan
Telmisartan
14 claims
| Drug | Claims |
|---|---|
| Lisinopril | 34 |
| Levothyroxine Sodium | 31 |
| Bupropion Xl Bupropion Hcl | 18 |
| Fluoxetine Hcl | 18 |
| Amlodipine Besylate | 15 |
| Alendronate Sodium | 14 |
| Eliquis Apixaban | 14 |
| Telmisartan | 14 |
| Primidone | 12 |
| Synthroid Levothyroxine Sodium | 12 |
* 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 Castle, 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 Castle, FNP-C's 449 claims are below the specialty average of 1,222.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Castle, both outside Georgia so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Nurse Practitioner Providers in Georgia
Other clinicians with the same primary specialty enrolled in Georgia, drawn from the same CMS NPPES roster as Castle.
One of 7,908 Family Nurse Practitioner providers enrolled in Georgia, 5 are shown here.
Dr. Diana Ababio
NP
Decatur, GA
Dr. Ugomma Abanukam
DNP, FNP
Atlanta, GA
Dr. Adefunke Abatan
NP
Hampton, GA
Dr. Johnna Abbasi
FNP
Cedartown, GA
Dr. Lisa Abbott
NP
Marietta, GA
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Susan Castle, FNP-C's specialty? ▼
Susan Castle, FNP-C specializes in Family Nurse Practitioner and practices in Decatur, Georgia. Credentials: FNP-C.
How much does Susan Castle, FNP-C prescribe under Medicare Part D? ▼
In 2023, Susan Castle, FNP-C wrote 449 Medicare Part D claims totaling $36K in drug costs for 78 beneficiaries.
Where is Susan Castle, FNP-C located? ▼
Susan Castle, FNP-C is located at 402 W PONCE DE LEON AVE, Decatur, GA, 30030. Phone: (404) 377-9010.
What is Susan Castle, FNP-C's NPI number? ▼
Susan Castle, FNP-C's National Provider Identifier (NPI) is 1083858716, issued on 04/24/2009.
Does Susan Castle, FNP-C prescribe more brand-name or generic drugs? ▼
Susan Castle, FNP-C's prescribing is 16% brand-name and 82% generic drugs by claim count, with $28K in brand drug costs.
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 Castle, FNP-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Susan Castle, FNP-C's most frequently prescribed drugs include Lisinopril, Levothyroxine Sodium, Bupropion Xl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Susan Castle, FNP-C accept Medicare? ▼
Susan Castle, FNP-C appears in CMS Medicare data with 449 Part D claims and 78 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Susan Castle, FNP-C's credentials? ▼
Susan Castle, FNP-C's NPI is 1083858716 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
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.