NPI registry status
Active
2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1184051526 MSN,BA,RN
Verify on CMS → Allison Underwood, MSN,BA,RN
Psychiatric/Mental Health Nurse Practitioner in New Haven, 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 40,776 in Psychiatric/Mental Health 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
890
Medicare Part D claims · 80 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Generic prescribing
97%
generic claims · 3% 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
Allison Underwood, MSN,BA,RN filed 890 Medicare Part D claims in 2023 as a Psychiatric/Mental Health Nurse Practitioner in New Haven, Connecticut, prescribing 97% generic.
- 890
- Part D claims, 2023
- 97%
- generic prescribing
- ≥73rd
- 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.
Allison Underwood, MSN,BA,RN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
890 ≥ 73rd percentile 73% 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 Allison Underwood, MSN,BA,RN?
Quality data not reportedPrimary specialty
Psychiatric/Mental Health Nurse Practitioner
Medicare Part D claims
890 4% vs specialty avg
Specialty distribution in Connecticut
How Psychiatric/Mental Health Nurse Practitioner 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 Psychiatric/Mental Health 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).
Allison Underwood, MSN,BA,RN appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding MSN,BA,RN credentials at 400 COLUMBUS AVE, New Haven, CT, 06519, with a listed phone of (203) 503-3000. NPI 1184051526 was issued on 09/30/2013.
Medicare Part D records for calendar year 2023 show 890 prescription claims written by this provider, covering 80 Medicare beneficiaries and totaling roughly $75K in drug spend, split 3% brand-name and 97% generic by claim count.
Psychiatric/Mental Health Nurse Practitioner is a mid-sized specialty nationwide, with 40,776 enrolled providers across 54 states and an average of 927 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 | 1184051526 |
|---|---|
| Specialty | Psychiatric/Mental Health Nurse Practitioner |
| Credentials | MSN,BA,RN |
| Gender | Female |
| NPI Issued | 09/30/2013 |
Brand vs generic prescribing mix · Generic-heavy
Allison Underwood, MSN,BA,RN - brand share 3.0%
Psychiatric/Mental Health Nurse Practitioner average
3% brand-name claims vs 97% generic, on 890 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.
890
Total Claims
$75K
Total Drug Cost
80
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,351
- Total Day Supply
- 39,842
- Brand vs Generic
- 3% brand / 97% generic
- Brand Drug Cost
- $31K
- Generic Drug Cost
- $44K
Patient Demographics
- Average Patient Age
- 58.1 years
- Avg HCC Risk Score
- 1.81
- Gender Split
- 60% female / 40% male
- Age Distribution
- <65: 54, 65-74: 21, 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 Allison Underwood, MSN,BA,RN prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trazodone Hcl
Trazodone Hcl
56 claims
- Risperidone
Risperidone
47 claims
- Fluoxetine Hcl
Fluoxetine Hcl
46 claims
- Hydroxyzine Hcl
Hydroxyzine Hcl
46 claims
- Olanzapine
Olanzapine
44 claims
- Bupropion Xl
Bupropion Xl
41 claims
- Benztropine Mesylate
Benztropine Mesylate
35 claims
- Duloxetine Hcl
Duloxetine Hcl
32 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 56 |
| Risperidone | 47 |
| Fluoxetine Hcl | 46 |
| Hydroxyzine Hcl | 46 |
| Olanzapine | 44 |
| Bupropion Xl Bupropion Hcl | 41 |
| Benztropine Mesylate | 35 |
| Duloxetine Hcl | 32 |
| Lorazepam | 32 |
| Mirtazapine | 31 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Psychiatric/Mental Health Nurse Practitioner in CT →
All providers in Connecticut →
Compare specialties →
Psychiatric/Mental Health Nurse Practitioner Overview
How Allison Underwood, MSN,BA,RN fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.
40,776
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider
Allison Underwood, MSN,BA,RN's 890 claims are below the specialty average of 927.
Nearby Psychiatric/Mental Health Nurse Practitioner Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Underwood.
One of 781 Psychiatric/Mental Health Nurse Practitioner providers enrolled in Connecticut, 5 are shown here.
Dr. Denise Abbate
APRN
Hartford, CT
Dr. Thuraya Abdi
APRN
Farmington, CT
Dr. William Abrokwa
ARNP
South Windsor, CT
Bridgitte Ackeifi
Southington, CT
Dr. Hye Adams
APRN
East Berlin, CT
Compare Psychiatric/Mental Health 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 Connecticut medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Psychiatric/Mental Health 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.
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Frequently Asked Questions
What is Allison Underwood, MSN,BA,RN's specialty? ▼
Allison Underwood, MSN,BA,RN specializes in Psychiatric/Mental Health Nurse Practitioner and practices in New Haven, Connecticut. Credentials: MSN,BA,RN.
How much does Allison Underwood, MSN,BA,RN prescribe under Medicare Part D? ▼
In 2023, Allison Underwood, MSN,BA,RN wrote 890 Medicare Part D claims totaling $75K in drug costs for 80 beneficiaries.
Where is Allison Underwood, MSN,BA,RN located? ▼
Allison Underwood, MSN,BA,RN is located at 400 COLUMBUS AVE, New Haven, CT, 06519. Phone: (203) 503-3000.
What is Allison Underwood, MSN,BA,RN's NPI number? ▼
Allison Underwood, MSN,BA,RN's National Provider Identifier (NPI) is 1184051526, issued on 09/30/2013.
Does Allison Underwood, MSN,BA,RN prescribe more brand-name or generic drugs? ▼
Allison Underwood, MSN,BA,RN's prescribing is 3% brand-name and 97% generic drugs by claim count, with $31K in brand drug costs.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US? ▼
There are 40,776 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 927 Medicare Part D claims per year.
What drugs does Allison Underwood, MSN,BA,RN prescribe most often? ▼
Based on 2023 Medicare Part D data, Allison Underwood, MSN,BA,RN's most frequently prescribed drugs include Trazodone Hcl, Risperidone, Fluoxetine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Allison Underwood, MSN,BA,RN accept Medicare? ▼
Allison Underwood, MSN,BA,RN appears in CMS Medicare data with 890 Part D claims and 80 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Allison Underwood, MSN,BA,RN's credentials? ▼
Allison Underwood, MSN,BA,RN's NPI is 1184051526 with credentials MSN,BA,RN. 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.