NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1912321803 PA-C
Verify on CMS → David Allyn, PA-C
Physician Assistant in West 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 149,975 in Physician Assistant, 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
463
Medicare Part D claims · 309 beneficiaries · Physician Assistant avg: 790
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
David Allyn, PA-C filed 463 Medicare Part D claims in 2023 as a Physician Assistant in West Haven, Connecticut.
- 463
- 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.
David Allyn, PA-C's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
463 Top 38% higher than 62% 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 David Allyn, PA-C?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
463 41% vs specialty avg
Specialty distribution in Connecticut
How Physician Assistant 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 Physician Assistant. 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).
David Allyn, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 1 CELLINI PL STE 102, West Haven, CT, 06516, with a listed phone of (203) 932-6481. NPI 1912321803 was issued on 02/12/2014.
Medicare Part D records for calendar year 2023 show 463 prescription claims written by this provider, covering 309 Medicare beneficiaries and totaling roughly $8K in drug spend, with an opioid prescribing rate of 16.6%.
Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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 | 1912321803 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 02/12/2014 |
Hospital and facility affiliations
Facilities where David Allyn, PA-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.
Hhc Physician Services PLLC
West Haven, CT
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
463
Total Claims
$8K
Total Drug Cost
309
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 471
- Total Day Supply
- 4,343
- Generic Drug Cost
- $5K
- Opioid Claims
- 77 (16.6% rate)
- Antibiotic Claims
- 139
Patient Demographics
- Average Patient Age
- 68.8 years
- Avg HCC Risk Score
- 1.51
- Gender Split
- 55% female / 45% male
- Age Distribution
- <65: 79, 65-74: 124, 75-84: 73, 85+: 33
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What David Allyn, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Doxycycline Hyclate
Doxycycline Hyclate
45 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
39 claims
- Cephalexin
Cephalexin
33 claims
- Prednisone
Prednisone
33 claims
- Ondansetron Odt
Ondansetron Odt
31 claims
- Methylprednisolone
Methylprednisolone
28 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
23 claims
- Ibuprofen 13
Ibuprofen
13 claims
| Drug | Claims |
|---|---|
| Doxycycline Hyclate | 45 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 39 |
| Cephalexin | 33 |
| Prednisone | 33 |
| Ondansetron Odt Ondansetron | 31 |
| Methylprednisolone | 28 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 23 |
| Ibuprofen | 13 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 13 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How David Allyn, PA-C fits within the Physician Assistant landscape nationally.
149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
David Allyn, PA-C's 463 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in Connecticut
Other clinicians with the same primary specialty enrolled in Connecticut, drawn from the same CMS NPPES roster as Allyn.
Dr. Gazang Abdulla
PA-C
Hartford, CT
Dr. Jill Aboulian
PA-C
Cheshire, CT
Dr. Celin Abraham
PA-C
Waterbury, CT
Dr. Louisa Acca
PA-C
Hartford, CT
Dr. Julia Accorsini
PA-C
New Haven, CT
Compare Physician Assistant 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 Physician Assistant 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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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is David Allyn, PA-C's specialty? ▼
David Allyn, PA-C specializes in Physician Assistant and practices in West Haven, Connecticut. Credentials: PA-C.
How much does David Allyn, PA-C prescribe under Medicare Part D? ▼
In 2023, David Allyn, PA-C wrote 463 Medicare Part D claims totaling $8K in drug costs for 309 beneficiaries.
Where is David Allyn, PA-C located? ▼
David Allyn, PA-C is located at 1 CELLINI PL STE 102, West Haven, CT, 06516. Phone: (203) 932-6481.
What is David Allyn, PA-C's NPI number? ▼
David Allyn, PA-C's National Provider Identifier (NPI) is 1912321803, issued on 02/12/2014.
Does David Allyn, PA-C prescribe opioids? ▼
Yes, David Allyn, PA-C had 77 opioid claims in 2023 with an opioid prescribing rate of 16.6%.
How many Physician Assistant providers are there in the US? ▼
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does David Allyn, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, David Allyn, PA-C's most frequently prescribed drugs include Doxycycline Hyclate, Oxycodone-Acetaminophen, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Allyn, PA-C accept Medicare? ▼
David Allyn, PA-C appears in CMS Medicare data with 463 Part D claims and 309 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Allyn, PA-C's credentials? ▼
David Allyn, PA-C's NPI is 1912321803 with credentials PA-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.