MARK NELSON, MD
Specialist in WINSTON SALEM, North Carolina. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
MARK NELSON, MD filed 443 Medicare Part D claims in 2023 as a Specialist in WINSTON SALEM, North Carolina, prescribing 91% generic.
- 443
- Part D claims, 2023
- 91%
- generic prescribing
- $165.01
- 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.
MARK NELSON, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
443 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 MARK NELSON, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in North Carolina
How Specialist compares to other specialties among North Carolina providers
Specialist share within North Carolina
Specialist is one of the more visible NUCC categories in North Carolina
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Specialist (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Specialist ABMS/AOA estimate
Est. board-certified rate (Specialist) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Specialist US NPIs
Specialty board-certified rate — Specialist estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
MARK NELSON, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 750 HIGHLAND OAKS DR STE 100, WINSTON SALEM, NC, 27103, with a listed phone of (336) 659-1528. NPI 1417953654 was issued on 06/22/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NELSON most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 443 prescription claims written by this provider, covering 263 Medicare beneficiaries and totaling roughly $23K in drug spend, split 9% brand-name and 91% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.
Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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 | 1417953654 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 06/22/2005 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm MARK NELSON, MD's current license status, disciplinary history, and board certifications with the North Carolina Medical Board in North Carolina before relying on this page for a clinical or care decision.
How we sourced this profile
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 MARK NELSON, MD. Source: openpaymentsdata.cms.gov.
Total received
$165
Largest payer
Genentech USA, 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 · Generic-heavy
9% brand-name claims vs 91% generic, on 443 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.
Prescribing Breakdown
- 30-Day Fills
- 526
- Total Day Supply
- 11,402
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $12K
- Generic Drug Cost
- $10K
Patient Demographics
- Average Patient Age
- 79.2 years
- Avg HCC Risk Score
- 1.73
- Gender Split
- 66% female / 34% male
- Age Distribution
- <65: 11, 65-74: 68, 75-84: 101, 85+: 83
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What MARK NELSON, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Ofloxacin
Ofloxacin
294 claims
- Difluprednate 25
Difluprednate
25 claims
- Prednisolone Acetate 15
Prednisolone Acetate
15 claims
- Tobramycin 12
Tobramycin
12 claims
- Polymyxin B Sul-Tr… 11
Polymyxin B Sul-Trimethoprim
11 claims
| Drug | Claims |
|---|---|
| Ofloxacin | 294 |
| Difluprednate | 25 |
| Prednisolone Acetate | 15 |
| Tobramycin | 12 |
| Polymyxin B Sul-Trimethoprim Polymyxin B Sulf/Trimethoprim | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How MARK NELSON, MD fits within the Specialist landscape nationally.
MARK NELSON, MD's 443 claims are below the specialty average of 1,474.
Nearby Specialist Providers in North Carolina
Other clinicians with the same primary specialty enrolled in North Carolina, drawn from the same CMS NPPES roster as NELSON.
Compare Specialist nationally: see state-by-state distribution →
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
Explore North Carolina
Frequently Asked Questions
What is MARK NELSON, MD's specialty? ▼
How much does MARK NELSON, MD prescribe under Medicare Part D? ▼
Where is MARK NELSON, MD located? ▼
What is MARK NELSON, MD's NPI number? ▼
Does MARK NELSON, MD prescribe more brand-name or generic drugs? ▼
How many Specialist providers are there in the US? ▼
What drugs does MARK NELSON, MD prescribe most often? ▼
Does MARK NELSON, MD accept Medicare? ▼
How can I verify MARK NELSON, MD's credentials? ▼
Data Sources
- 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