NPI registry status
Active
2026 NPPES data Surgical Physician Assistant NPI 1225296825 MPAC
Verify on CMS → William Cockfield, MPAC
Surgical Physician Assistant in Durham, North Carolina.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,179 in Surgical 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
373
Medicare Part D claims · 128 beneficiaries · Surgical Physician Assistant avg: 316
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$488.37
4 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
William Cockfield, MPAC filed 373 Medicare Part D claims in 2023 as a Surgical Physician Assistant in Durham, North Carolina, prescribing 86% generic.
- 373
- Part D claims, 2023
- 86%
- generic prescribing
- $488.37
- industry payments (Sunshine Act)
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.
William Cockfield, MPAC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
373 Top 43% higher than 57% 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 William Cockfield, MPAC?
Quality data not reportedPrimary specialty
Surgical Physician Assistant
Medicare Part D claims
373 18% vs specialty avg
Specialty distribution in North Carolina
How Surgical Physician Assistant compares to other specialties among North Carolina 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 Surgical 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).
William Cockfield, MPAC appears in the CMS NPPES registry as a Surgical Physician Assistant provider holding MPAC credentials at 2301 ERWIN RD RM 7451H, Durham, NC, 27710, with a listed phone of (919) 681-5816. NPI 1225296825 was issued on 05/30/2008.
Medicare Part D records for calendar year 2023 show 373 prescription claims written by this provider, covering 128 Medicare beneficiaries and totaling roughly $100K in drug spend, split 14% brand-name and 86% generic by claim count.
Surgical Physician Assistant is a mid-sized specialty nationwide, with 16,179 enrolled providers across 54 states and an average of 316 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 | 1225296825 |
|---|---|
| Specialty | Surgical Physician Assistant |
| Credentials | MPAC |
| Gender | Male |
| NPI Issued | 05/30/2008 |
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 Cockfield, MPAC. Source: openpaymentsdata.cms.gov.
Total received
$488
Largest payer
Medtronic, 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 · Typical
William Cockfield, MPAC - brand share 14.0%
Surgical Physician Assistant average
14% brand-name claims vs 86% generic, on 373 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.
373
Total Claims
$100K
Total Drug Cost
128
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 807
- Total Day Supply
- 23,907
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $74K
- Generic Drug Cost
- $27K
Patient Demographics
- Average Patient Age
- 76.2 years
- Avg HCC Risk Score
- 1.86
- Gender Split
- 35% female / 65% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What William Cockfield, MPAC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amiodarone Hcl
Amiodarone Hcl
115 claims
- Metoprolol Succinate
Metoprolol Succinate
77 claims
- Eliquis 40
Eliquis
40 claims
- Diltiazem 24hr Er … 36
Diltiazem 24hr Er (Cd)
36 claims
- Dofetilide 17
Dofetilide
17 claims
- Carvedilol 14
Carvedilol
14 claims
| Drug | Claims |
|---|---|
| Amiodarone Hcl | 115 |
| Metoprolol Succinate | 77 |
| Eliquis Apixaban | 40 |
| Diltiazem 24hr Er (Cd) Diltiazem Hcl | 36 |
| Dofetilide | 17 |
| Carvedilol | 14 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgical Physician Assistant Overview
How William Cockfield, MPAC fits within the Surgical Physician Assistant landscape nationally.
16,179
Surgical Physician Assistant Providers in US
54
States with Surgical Physician Assistant
316
Avg Claims per Provider
William Cockfield, MPAC's 373 claims are above the specialty average of 316.
Nearby Surgical Physician Assistant Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as Cockfield.
Dr. Cassandra Albertson
P.A.
Durham, NC
Dr. Jessica Allen
PAC
Durham, NC
Dr. Braden Allred
PA-C
Raleigh, NC
Dr. Landon Alston
PA
Concord, NC
Dr. Sheila Anderson
PA-C
Wilmington, NC
Compare Surgical 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 North Carolina medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Surgical 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.
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Frequently Asked Questions
What is William Cockfield, MPAC's specialty? ▼
William Cockfield, MPAC specializes in Surgical Physician Assistant and practices in Durham, North Carolina. Credentials: MPAC.
How much does William Cockfield, MPAC prescribe under Medicare Part D? ▼
In 2023, William Cockfield, MPAC wrote 373 Medicare Part D claims totaling $100K in drug costs for 128 beneficiaries.
Where is William Cockfield, MPAC located? ▼
William Cockfield, MPAC is located at 2301 ERWIN RD RM 7451H, Durham, NC, 27710. Phone: (919) 681-5816.
What is William Cockfield, MPAC's NPI number? ▼
William Cockfield, MPAC's National Provider Identifier (NPI) is 1225296825, issued on 05/30/2008.
Does William Cockfield, MPAC prescribe more brand-name or generic drugs? ▼
William Cockfield, MPAC's prescribing is 14% brand-name and 86% generic drugs by claim count, with $74K in brand drug costs.
How many Surgical Physician Assistant providers are there in the US? ▼
There are 16,179 Surgical Physician Assistant providers across 54 states in the US. The average Surgical Physician Assistant provider writes 316 Medicare Part D claims per year.
What drugs does William Cockfield, MPAC prescribe most often? ▼
Based on 2023 Medicare Part D data, William Cockfield, MPAC's most frequently prescribed drugs include Amiodarone Hcl, Metoprolol Succinate, Eliquis. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Cockfield, MPAC accept Medicare? ▼
William Cockfield, MPAC appears in CMS Medicare data with 373 Part D claims and 128 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify William Cockfield, MPAC's credentials? ▼
William Cockfield, MPAC's NPI is 1225296825 with credentials MPAC. 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.
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.