NPI registry status
Active
2026 NPPES data Surgical Oncology Physician NPI 1285626465 MD
Verify on CMS → Charles Cheng, MD
Surgical Oncology Physician in Appleton, Wisconsin.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,460 in Surgical Oncology 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
136
Medicare Part D claims · 81 beneficiaries · Surgical Oncology Physician avg: 99
Industry payments
$961.58
11 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Charles Cheng, MD filed 136 Medicare Part D claims in 2024 as a Surgical Oncology Physician in Appleton, Wisconsin.
- 136
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥34th
- 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 Charles Cheng, MD
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 1285626465), first enumerated 08/16/2005.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 136 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
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$961.58 in reported industry payments (11 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 1285626465 · Surgical Oncology Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1285626465
- ENUM-LEGACY 2005
- TAX-NARROW 1,460
- RX-LIGHT 136
- BOOK-THIN 24 in Wisconsin
- PHOTO-ENUM Marlys Schuh · 2005
Charles Cheng, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
136 ≥ 34th percentile 34% 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 certification likely (heuristic, not verified)
Charles Cheng, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - 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 Charles Cheng, MD?
Quality data not reportedPrimary specialty
Surgical Oncology Physician
Medicare Part D claims
136 37% vs specialty avg
Specialty distribution in Wisconsin
How Surgical Oncology Physician compares to other specialties among Wisconsin 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 Oncology 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 | 1285626465 |
|---|---|
| Specialty | Surgical Oncology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/16/2005 |
Hospital and facility affiliations
Facilities where Charles Cheng, MD 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.
Fox Valley Surgical Associates Ltd
Appleton, WI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
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 Charles Cheng, MD. Source: openpaymentsdata.cms.gov.
Total received
$962
Largest payer
Olympus Corporation of the Americas
Most common payment type
Travel and Lodging
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
136
Total Claims
$1K
Total Drug Cost
81
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 181
- Total Day Supply
- 3,346
- Brand Drug Cost
- $0
- Generic Drug Cost
- $1K
- Opioid Claims
- 49 (36.0% rate)
- Antibiotic Claims
- 13
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.38
- Gender Split
- 40% female / 60% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Charles Cheng, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Oxycodone Hcl
Oxycodone Hcl
46 claims
- Omeprazole
Omeprazole
44 claims
- Pantoprazole Sodium 12
Pantoprazole Sodium
12 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 46 |
| Omeprazole | 44 |
| Pantoprazole Sodium | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Surgical Oncology Physician Overview
How Charles Cheng, MD fits within the Surgical Oncology Physician landscape nationally.
1,460
Surgical Oncology Physician Providers in US
51
States with Surgical Oncology Physician
99
Avg Claims per Provider
Charles Cheng, MD's 136 claims are above the specialty average of 99.
Nationwide Surgical Oncology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Cheng, both outside Wisconsin 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 Surgical Oncology Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Cheng.
One of 24 Surgical Oncology Physician providers enrolled in Wisconsin, 5 are shown here.
Dr. Daniel Abbott
MD
Madison, WI
Dr. Geoffrey Bellini
MD
Milwaukee, WI
Dr. Ashley Cayo
MD
Milwaukee, WI
Dr. Nikolaos Chatzizacharias
MD, PHD, FRCS
Wauwatosa, WI
Dr. Adrienne Cobb
M.D.
Milwaukee, WI
Compare Surgical Oncology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Charles Cheng, MD's specialty? ▼
Charles Cheng, MD specializes in Surgical Oncology Physician and practices in Appleton, Wisconsin. Credentials: MD.
How much does Charles Cheng, MD prescribe under Medicare Part D? ▼
In 2024, Charles Cheng, MD wrote 136 Medicare Part D claims totaling $1K in drug costs for 81 beneficiaries.
Where is Charles Cheng, MD located? ▼
Charles Cheng, MD is located at 2000 E MILESTONE DR, Appleton, WI, 54913. Phone: (920) 731-8289.
What is Charles Cheng, MD's NPI number? ▼
Charles Cheng, MD's National Provider Identifier (NPI) is 1285626465, issued on 08/16/2005.
Does Charles Cheng, MD prescribe opioids? ▼
Yes, Charles Cheng, MD had 49 opioid claims in 2024 with an opioid prescribing rate of 36.0%.
How many Surgical Oncology Physician providers are there in the US? ▼
There are 1,460 Surgical Oncology Physician providers across 51 states in the US. The average Surgical Oncology Physician provider writes 99 Medicare Part D claims per year.
What drugs does Charles Cheng, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Charles Cheng, MD's most frequently prescribed drugs include Oxycodone Hcl, Omeprazole, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Charles Cheng, MD accept Medicare? ▼
Charles Cheng, MD appears in CMS Medicare data with 136 Part D claims and 81 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Charles Cheng, MD's credentials? ▼
Charles Cheng, MD's NPI is 1285626465 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.
- 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.