NPI registry status
Active
2026 NPPES data Neurological Surgery Physician NPI 1093811028 MD
Verify on CMS → William Choi, MD
Neurological Surgery Physician in Greenwood Village, Colorado.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 8,317 in Neurological Surgery 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
183
Medicare Part D claims · 81 beneficiaries · Neurological Surgery Physician avg: 189
MIPS score
62.6/100
▼ 21 pts below national avg 83.5 · Mid-tier
Industry payments
$806.88
18 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
William Choi, MD reported a CMS MIPS final score of 62.6/100 - below the 83.5 national average - and filed 183 Medicare Part D claims in 2024.
- 62.6/100
- MIPS score · -21 vs avg
- 183
- Part D claims, 2024
- Likely
- board-certified (heuristic)
- ≥6th
- pct among measured MIPS (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 William Choi, 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 1093811028), first enumerated 09/16/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 183 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 62.6/100 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
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
$806.88 in reported industry payments (18 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 1093811028 · Neurological Surgery Physician
NPI-10 · ENUM-LEGACY · TAX-MID · MIPS-LOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH
- NPI-10 1093811028
- ENUM-LEGACY 2006
- TAX-MID 8K Neurological Surgery
- MIPS-LOW 62.6/100
- RX-LIGHT 183
- BOOK-THIN 173 in Colorado
- PHOTO-FINISH Matthew Hefner · ±0.6
MIPS final-score neighbourhood
Same-specialty nationwide peers by CMS final score, not geographic proximity
- William Snyder ·…
William Snyder
61.4 MIPS pts
- Macaulay Nwojo ·…
Macaulay Nwojo
61.8 MIPS pts
- Choi · this prov…
Choi · this provider
62.6 MIPS pts
- Matthew Hefner ·…
Matthew Hefner
63.2 MIPS pts
- Isa Canavati · h…
Isa Canavati
63.4 MIPS pts
What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).
William Choi, 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.
63 ≥ 6th percentile 6% 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 Choi, MD sits
This provider among neurological surgery physician peers
Across the 1,591 neurological surgery physician providers who report both Medicare Part D prescribing and a MIPS quality score, William Choi, MD writes more Part D claims than 72% of them and scores higher on MIPS quality than 7% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Each dot is one neurological surgery physician peer from a representative sample of 60; the gold marker is William Choi, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
William Choi, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 William Choi, MD?
Below national averagePrimary specialty
Neurological Surgery Physician
Medicare Part D claims
183 3% vs specialty avg
MIPS final score
62.6/100 20.9 pts vs avg
Specialty distribution in Colorado
How Neurological Surgery Physician compares to other specialties among Colorado providers
Medicare quality performance, MIPS
William Choi, MD's 2023 MIPS final score plotted against the Neurological Surgery Physician national average
- MIPS Final Score
- 62.6/100
- 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 | 1093811028 |
|---|---|
| Specialty | Neurological Surgery Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/16/2006 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
62.6294
Final Score
Measured-score avg: 83.5
76.5413
Quality
18.439
Cost
Reporting: Group practice
Hospital and facility affiliations
Facilities where William Choi, 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.
Portercare Adventist Health System
Castle Rock, CO
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 William Choi, MD. Source: openpaymentsdata.cms.gov.
Total received
$807
Largest payer
CTL Medical Corporation
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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
183
Total Claims
$3K
Total Drug Cost
81
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 183.333
- Total Day Supply
- 2,080
- Generic Drug Cost
- $2K
- Opioid Claims
- 83 (45.4% rate)
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 1.09
- Gender Split
- 47% female / 53% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What William Choi, MD prescribes most
Top Medicare Part D drugs by claim count, 2024
- Methylprednisolone
Methylprednisolone
28 claims
- Oxycodone Hcl
Oxycodone Hcl
27 claims
- Methocarbamol
Methocarbamol
26 claims
- Oxycodone-Acetamin…
Oxycodone-Acetaminophen
23 claims
- Tramadol Hcl
Tramadol Hcl
21 claims
| Drug | Claims |
|---|---|
| Methylprednisolone | 28 |
| Oxycodone Hcl | 27 |
| Methocarbamol | 26 |
| Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen | 23 |
| Tramadol Hcl | 21 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Neurological Surgery Physician Overview
How William Choi, MD fits within the Neurological Surgery Physician landscape nationally.
8,317
Neurological Surgery Physician Providers in US
53
States with Neurological Surgery Physician
189
Avg Claims per Provider
William Choi, MD's 183 claims are below the specialty average of 189.
Nationwide Neurological Surgery Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Choi, both outside Colorado so the neighborhoods are not geographic containment.
Similar MIPS final score
Nearest same-specialty clinicians by CMS MIPS final score (62.6 here).
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Neurological Surgery Physician Providers in Colorado
Other clinicians with the same primary specialty enrolled in Colorado, drawn from the same CMS NPPES roster as Choi.
One of 173 Neurological Surgery Physician providers enrolled in Colorado, 5 are shown here.
Dr. Hemn Abdulrahim
MD
Aurora, CO
Dr. Gareth Adams
MD
Denver, CO
Dr. Basheal Agrawal
M.D.
Grand Junction, CO
Allyson Alexander
MD PHD
Aurora, CO
Dr. Othman Alhammad
MD
Aurora, CO
Compare Neurological Surgery Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is William Choi, MD's specialty? ▼
William Choi, MD specializes in Neurological Surgery Physician and practices in Greenwood Village, Colorado. Credentials: MD.
How much does William Choi, MD prescribe under Medicare Part D? ▼
In 2024, William Choi, MD wrote 183 Medicare Part D claims totaling $3K in drug costs for 81 beneficiaries.
What is William Choi, MD's Medicare quality score? ▼
William Choi, MD has a CMS MIPS Final Score of 62.6/100 (Quality: 76.5, Cost: 18.4). 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 Choi, MD located? ▼
William Choi, MD is located at 8200 E BELLEVIEW AVE STE 400E, Greenwood Village, CO, 80111. Phone: (303) 790-2225.
What is William Choi, MD's NPI number? ▼
William Choi, MD's National Provider Identifier (NPI) is 1093811028, issued on 09/16/2006.
Does William Choi, MD prescribe opioids? ▼
Yes, William Choi, MD had 83 opioid claims in 2024 with an opioid prescribing rate of 45.4%.
How many Neurological Surgery Physician providers are there in the US? ▼
There are 8,317 Neurological Surgery Physician providers across 53 states in the US. The average Neurological Surgery Physician provider writes 189 Medicare Part D claims per year.
What drugs does William Choi, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, William Choi, MD's most frequently prescribed drugs include Methylprednisolone, Oxycodone Hcl, Methocarbamol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does William Choi, MD accept Medicare? ▼
William Choi, MD appears in CMS Medicare data with 183 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 William Choi, MD's credentials? ▼
William Choi, MD's NPI is 1093811028 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.