NPI registry status
Active
2026 NPPES data Medical-Surgical Clinical Nurse Specialist NPI 1770566317 APRN
Verify on CMS → Joann Ahern, APRN
Medical-Surgical Clinical Nurse Specialist in Danbury, Connecticut.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 284 in Medical-Surgical Clinical Nurse Specialist, 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
45
Medicare Part D claims · Medical-Surgical Clinical Nurse Specialist avg: 597
Generic prescribing
0%
generic claims · 84% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$7.6K
29 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Joann Ahern, APRN filed 45 Medicare Part D claims in 2024 as a Medical-Surgical Clinical Nurse Specialist in Danbury, Connecticut, prescribing 0% generic.
- 45
- Part D claims, 2024
- 0%
- generic prescribing
- $7.6K
- industry payments (Sunshine Act)
- ≥0th
- 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 Joann Ahern, APRN
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 1770566317), first enumerated 11/29/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 45 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$7.6K in reported industry payments (29 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- 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 1770566317 · Medical-Surgical Clinical Nurse Specialist
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1770566317
- ENUM-LEGACY 2005
- TAX-TRACE 284
- RX-TRACE 45
- BOOK-THIN 8 in Connecticut
- PHOTO-ENUM Jennifer Glazier, CS… · 2005
Joann Ahern, APRN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
45 ≥ 0th percentile 0% 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 Joann Ahern, APRN?
Quality data not reportedPrimary specialty
Medical-Surgical Clinical Nurse Specialist
Medicare Part D claims
45 92% vs specialty avg
Specialty distribution in Connecticut
How Medical-Surgical Clinical Nurse Specialist compares to other specialties among Connecticut 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-Surgical Clinical Nurse Specialist. 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 | 1770566317 |
|---|---|
| Specialty | Medical-Surgical Clinical Nurse Specialist |
| Credentials | APRN |
| Gender | Female |
| NPI Issued | 11/29/2005 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Joann Ahern, APRN. Source: openpaymentsdata.cms.gov.
Total received
$7.6K
Largest payer
Tandem Diabetes Care, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Brand vs generic prescribing mix · Brand-heavy
Joann Ahern, APRN - brand share 84.0%
Medical-Surgical Clinical Nurse Specialist average
84% brand-name claims vs 0% generic, on 45 2024 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 2024.
45
Total Claims
$31K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 71.533
- Total Day Supply
- 1,967
- Brand vs Generic
- 84% brand / 0% generic
- Brand Drug Cost
- $31K
Patient Demographics
- Average Patient Age
- 70.5 years
- Avg HCC Risk Score
- 0.82
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Mounjaro Tirzepatide | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Medical-Surgical Clinical Nurse Specialist in CT →
All providers in Connecticut →
Compare specialties →
Medical-Surgical Clinical Nurse Specialist Overview
How Joann Ahern, APRN fits within the Medical-Surgical Clinical Nurse Specialist landscape nationally.
284
Medical-Surgical Clinical Nurse Specialist Providers in US
39
States with Medical-Surgical Clinical Nurse Specialist
597
Avg Claims per Provider
Joann Ahern, APRN's 45 claims are below the specialty average of 597.
Nationwide Medical-Surgical Clinical Nurse Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Ahern, both outside Connecticut so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2005)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Medical-Surgical Clinical Nurse Specialist Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Ahern.
One of 8 Medical-Surgical Clinical Nurse Specialist providers enrolled in Connecticut, 5 are shown here.
Patricia Bozeman
APRN
Hartford, CT
Judith Conway
APRN
Farmington, CT
Lisa Corbett
APRN
Hartford, CT
Jessica Crespo
Wallingford, CT
Marianne Davies
APRN
New Haven, CT
Compare Medical-Surgical Clinical Nurse Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Joann Ahern, APRN's specialty? ▼
Joann Ahern, APRN specializes in Medical-Surgical Clinical Nurse Specialist and practices in Danbury, Connecticut. Credentials: APRN.
How much does Joann Ahern, APRN prescribe under Medicare Part D? ▼
In 2024, Joann Ahern, APRN wrote 45 Medicare Part D claims totaling $31K in drug costs for N/A beneficiaries.
Where is Joann Ahern, APRN located? ▼
Joann Ahern, APRN is located at 79 SAND PIT RD, Danbury, CT, 06810. Phone: (203) 749-5754.
What is Joann Ahern, APRN's NPI number? ▼
Joann Ahern, APRN's National Provider Identifier (NPI) is 1770566317, issued on 11/29/2005.
Does Joann Ahern, APRN prescribe more brand-name or generic drugs? ▼
Joann Ahern, APRN's prescribing is 84% brand-name and 0% generic drugs by claim count, with $31K in brand drug costs.
How many Medical-Surgical Clinical Nurse Specialist providers are there in the US? ▼
There are 284 Medical-Surgical Clinical Nurse Specialist providers across 39 states in the US. The average Medical-Surgical Clinical Nurse Specialist provider writes 597 Medicare Part D claims per year.
What drugs does Joann Ahern, APRN prescribe most often? ▼
Based on 2024 Medicare Part D data, Joann Ahern, APRN's most frequently prescribed drugs include Mounjaro. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Joann Ahern, APRN accept Medicare? ▼
Joann Ahern, APRN appears in CMS Medicare data with 45 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Joann Ahern, APRN's credentials? ▼
Joann Ahern, APRN's NPI is 1770566317 with credentials APRN. 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.