NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1912904038 M.D.
Verify on CMS → David Wien, M.D.
Allergy & Immunology Physician in Wilmington, Delaware.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 3,412 in Allergy & Immunology Physician, 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
2K
Medicare Part D claims · 283 beneficiaries · Allergy & Immunology Physician avg: 788
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$2.7K
96 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
David Wien, M.D. filed 1,724 Medicare Part D claims in 2024 as an Allergy & Immunology Physician in Wilmington, Delaware, prescribing 77% generic.
- 2K
- Part D claims, 2024
- 77%
- generic prescribing
- $2.7K
- industry payments (Sunshine Act)
- ≥82nd
- 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 David Wien, M.D.
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 1912904038), first enumerated 07/05/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 1,724 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Reported
Industry payment transparency
$2.7K in reported industry payments (96 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 1912904038 · Allergy & Immunology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-MID · BOOK-THIN · PHOTO-ENUM
- NPI-10 1912904038
- ENUM-LEGACY 2005
- TAX-NARROW 3,412
- RX-MID 1,724
- BOOK-THIN 11 in Delaware
- PHOTO-ENUM Michael Maloney · 2005
David Wien, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
1,724 ≥ 82nd percentile 82% 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
◑
Board-eligible specialty (heuristic, not verified)
David Wien, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about David Wien, M.D.?
Quality data not reportedPrimary specialty
Allergy & Immunology Physician
Medicare Part D claims
1,724 119% vs specialty avg
Specialty distribution in Delaware
How Allergy & Immunology Physician compares to other specialties among Delaware 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 Allergy & Immunology Physician. 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 | 1912904038 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 07/05/2005 |
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 David Wien, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$2.7K
Largest payer
AstraZeneca Pharmaceuticals LP
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 · Typical
David Wien, M.D. - brand share 23.0%
Allergy & Immunology Physician average
23% brand-name claims vs 77% generic, on 1,724 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.
1,724
Total Claims
$521K
Total Drug Cost
283
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,620.367
- Total Day Supply
- 69,364
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $488K
- Generic Drug Cost
- $33K
- Antibiotic Claims
- 208
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 67% female / 33% male
- Age Distribution
- <65: 35, 65-74: 142, 75-84: 90, 85+: 16
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What David Wien, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Azelastine Hcl
Azelastine Hcl
299 claims
- Fluticasone Propio…
Fluticasone Propionate
270 claims
- Prednisone
Prednisone
181 claims
- Trelegy Ellipta
Trelegy Ellipta
162 claims
- Doxycycline Hyclate 97
Doxycycline Hyclate
97 claims
- Albuterol Sulfate … 77
Albuterol Sulfate Hfa
77 claims
- Montelukast Sodium 64
Montelukast Sodium
64 claims
- Levocetirizine Dih… 43
Levocetirizine Dihydrochloride
43 claims
| Drug | Claims |
|---|---|
| Azelastine Hcl | 299 |
| Fluticasone Propionate | 270 |
| Prednisone | 181 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 162 |
| Doxycycline Hyclate | 97 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 77 |
| Montelukast Sodium | 64 |
| Levocetirizine Dihydrochloride | 43 |
| Cefdinir | 41 |
| Dupixent Syringe Dupilumab | 37 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Allergy & Immunology Physician Overview
How David Wien, M.D. fits within the Allergy & Immunology Physician landscape nationally.
3,412
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
788
Avg Claims per Provider
David Wien, M.D.'s 1,724 claims are above the specialty average of 788.
Nationwide Allergy & Immunology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Wien, both outside Delaware 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 Allergy & Immunology Physician Providers in Delaware
Other clinicians with the same primary specialty enrolled in Delaware, drawn from the same CMS NPPES roster as Wien.
One of 11 Allergy & Immunology Physician providers enrolled in Delaware, 5 are shown here.
Dr. Sokun Bhatti
MD
Newark, DE
Thomas Graves
Newark, DE
Junfang Jiao
Newark, DE
Dr. Richard Kim
M.D.
Wilmington, DE
Dr. Trong Le
M.D.
Wilmington, DE
Compare Allergy & Immunology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is David Wien, M.D.'s specialty? ▼
David Wien, M.D. specializes in Allergy & Immunology Physician and practices in Wilmington, Delaware. Credentials: M.D..
How much does David Wien, M.D. prescribe under Medicare Part D? ▼
In 2024, David Wien, M.D. wrote 1,724 Medicare Part D claims totaling $521K in drug costs for 283 beneficiaries.
Where is David Wien, M.D. located? ▼
David Wien, M.D. is located at 708 GREENBANK RD, Wilmington, DE, 19808. Phone: (302) 998-1866.
What is David Wien, M.D.'s NPI number? ▼
David Wien, M.D.'s National Provider Identifier (NPI) is 1912904038, issued on 07/05/2005.
Does David Wien, M.D. prescribe more brand-name or generic drugs? ▼
David Wien, M.D.'s prescribing is 23% brand-name and 77% generic drugs by claim count, with $488K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US? ▼
There are 3,412 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 788 Medicare Part D claims per year.
What drugs does David Wien, M.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, David Wien, M.D.'s most frequently prescribed drugs include Azelastine Hcl, Fluticasone Propionate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Wien, M.D. accept Medicare? ▼
David Wien, M.D. appears in CMS Medicare data with 1,724 Part D claims and 283 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Wien, M.D.'s credentials? ▼
David Wien, M.D.'s NPI is 1912904038 with credentials M.D.. 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.