NPI registry status
Active
2026 NPPES data Allergy & Immunology Physician NPI 1154306850 MD
Verify on CMS → William Corder, MD
Allergy & Immunology Physician in Morgantown, West Virginia.
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
791
Medicare Part D claims · 142 beneficiaries · Allergy & Immunology Physician avg: 788
Generic prescribing
77%
generic claims · 23% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
94.9/100
▲ 11 pts above national avg 83.5 · Exceptional
Industry payments
$459.25
17 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
William Corder, MD reported a CMS MIPS final score of 94.9/100 - above the 83.5 national average - and filed 791 Medicare Part D claims in 2024.
- 94.9/100
- MIPS score · +11 vs avg
- 791
- Part D claims, 2024
- 77%
- generic prescribing
- Likely
- board-certified (heuristic)
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 William Corder, MD
Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1154306850), first enumerated 12/14/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 791 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
CMS quality reporting (MIPS)
Reported a CMS MIPS final score of 94.9/100 in the Quality Payment Program — a federal quality measure, not a patient review.
Source: CMS Quality Payment Program
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Industry payment transparency
$459.25 in reported industry payments (17 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 1154306850 · Allergy & Immunology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1154306850
- ENUM-LEGACY 2005
- TAX-NARROW 3,412
- MIPS-ELITE 94.9/100
- RX-LIGHT 791
- BOOK-THIN 14 in West Virginia
- PHOTO-FINISH Paul Ogershok · ±0.0
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- Aaron Kobernick …
Aaron Kobernick
94.8 MIPS pts
- Corder · this pr…
Corder · this provider
94.9 MIPS pts
- Paul Ogershok · …
Paul Ogershok
94.9 MIPS pts
- Daniel Rodriguez…
Daniel Rodriguez
95 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
William Corder, MD's MIPS score vs every measured U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.
95 ≥ 73rd percentile 73% of 454,083 measured providers are in lower value bands
Each bar is a band; taller bars hold more measured providers. 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 whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where William Corder, MD sits
This provider among allergy & immunology physician peers
Across the 659 allergy & immunology physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Corder, MD writes more Part D claims than 54% of them and scores higher on MIPS quality than 81% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one allergy & immunology physician peer from a representative sample of 60; the gold marker is William Corder, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Corder, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about William Corder, MD?
High performer (top quartile)Primary specialty
Allergy & Immunology Physician
Medicare Part D claims
791 0% vs specialty avg
MIPS final score
94.9/100 11.4 pts vs avg
Specialty distribution in West Virginia
How Allergy & Immunology Physician compares to other specialties among West Virginia providers
Medicare quality performance, MIPS
William Corder, MD's 2023 MIPS final score plotted against the Allergy & Immunology Physician national average
- MIPS Final Score
- 94.9/100
- vs 83.5 national avg · 2023 performance year
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 | 1154306850 |
|---|---|
| Specialty | Allergy & Immunology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/14/2005 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
94.9
Final Score
Measured-score avg: 83.5
94
Promoting Interoperability
Reporting: Group practice
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 William Corder, MD. Source: openpaymentsdata.cms.gov.
Total received
$459
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
William Corder, MD - brand share 23.0%
Allergy & Immunology Physician average
23% brand-name claims vs 77% generic, on 791 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.
791
Total Claims
$140K
Total Drug Cost
142
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,548.767
- Total Day Supply
- 45,383
- Brand vs Generic
- 23% brand / 77% generic
- Brand Drug Cost
- $121K
- Generic Drug Cost
- $20K
Patient Demographics
- Average Patient Age
- 68.8 years
- Avg HCC Risk Score
- 1.00
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 21, 65-74: 79, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Corder, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Azelastine Hcl
Azelastine Hcl
137 claims
- Montelukast Sodium
Montelukast Sodium
115 claims
- Fluticasone Propio…
Fluticasone Propionate
102 claims
- Levocetirizine Dih…
Levocetirizine Dihydrochloride
71 claims
- Hydroxyzine Hcl 51
Hydroxyzine Hcl
51 claims
- Albuterol Sulfate … 43
Albuterol Sulfate Hfa
43 claims
- Fluticasone-Salmet… 38
Fluticasone-Salmeterol
38 claims
- Famotidine 27
Famotidine
27 claims
| Drug | Claims |
|---|---|
| Azelastine Hcl | 137 |
| Montelukast Sodium | 115 |
| Fluticasone Propionate | 102 |
| Levocetirizine Dihydrochloride | 71 |
| Hydroxyzine Hcl | 51 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 43 |
| Fluticasone-Salmeterol Fluticasone Propion/Salmeterol | 38 |
| Famotidine | 27 |
| Symbicort Budesonide/Formoterol Fumarate | 18 |
| Arnuity Ellipta Fluticasone Furoate | 16 |
* 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 William Corder, MD 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
William Corder, MD's 791 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 Corder, both outside West Virginia so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (94.9 here).
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 West Virginia
Other clinicians with the same primary specialty enrolled in West Virginia, drawn from the same CMS NPPES roster as Corder.
One of 14 Allergy & Immunology Physician providers enrolled in West Virginia, 5 are shown here.
Dr. Chang Choi
MD
Charleston, WV
Dr. Steven Coutras
M.D.
Morgantown, WV
Dr. Isabel Deltoro Gordinho
M.D.
Beckley, WV
Dr. David Goetz
M.D.
Morgantown, WV
Ashley Grimmett
PAC
Scott Depot, WV
Compare Allergy & Immunology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Corder, MD's specialty? ▼
William Corder, MD specializes in Allergy & Immunology Physician and practices in Morgantown, West Virginia. Credentials: MD.
How much does William Corder, MD prescribe under Medicare Part D? ▼
In 2024, William Corder, MD wrote 791 Medicare Part D claims totaling $140K in drug costs for 142 beneficiaries.
What is William Corder, MD's Medicare quality score? ▼
William Corder, MD has a CMS MIPS Final Score of 94.9/100. The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is William Corder, MD located? ▼
William Corder, MD is located at 165 SCOTT AVE, Morgantown, WV, 26508. Phone: (304) 554-0440.
What is William Corder, MD's NPI number? ▼
William Corder, MD's National Provider Identifier (NPI) is 1154306850, issued on 12/14/2005.
Does William Corder, MD prescribe more brand-name or generic drugs? ▼
William Corder, MD's prescribing is 23% brand-name and 77% generic drugs by claim count, with $121K 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 William Corder, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, William Corder, MD's most frequently prescribed drugs include Azelastine Hcl, Montelukast Sodium, Fluticasone Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Corder, MD accept Medicare? ▼
William Corder, MD appears in CMS Medicare data with 791 Part D claims and 142 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Corder, MD's credentials? ▼
William Corder, MD's NPI is 1154306850 with credentials MD. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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.