Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. William Choi, MD

Individual provider Neurological Surgery Physician · NPI 1093811028

Dr. William Choi, MD practises Neurosurgery in Greenwood Village, Colorado. Graduated from McGill University, Faculty of Medicine in 1993, 33 years ago. Practices with Portercare Adventist Health System, a 767-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Colorado.

Years since qualifying
33
Trained at
McGill University, Faculty of Medicine
Licensed in
CO
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

8200 E Belleview Ave Ste 400E
Greenwood Village, CO 80111-2899
Phone: (303) 790-2225
Fax: (303) 790-2445
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Neurological Surgery Physician (primary) Taxonomy 207T00000X · Licence 39725 (CO)

Record details

NPI number1093811028
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 16, 2006
Last updated in NPPESFebruary 28, 2024
Certification dateFebruary 28, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROSURGERY
Medical schoolMCGILL UNIVERSITY, FACULTY OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice Portercare Adventist Health System — 767 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Laminectomy or laminotomy (partial removal of spine bones) 162 times · 98th percentile
Spinal fusion 275 times · 94th percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients264
Services billed 775 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $56,555 3 payments
Food and Beverage $618 20 payments · a meal or drink at a meeting or visit, not a fee
Gift $210 1 payment

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Boulder Community Health Hospital · Boulder, CO
  • Heart Of The Rockies Regional Medical Center Hospital · Salida, CO · listed as Salida Hospital District
  • Adventhealth Castle Rock Hospital · Castle Rock, CO
  • Hca-Healthone Dba Swedish Medical Center Hospital · Englewood, CO
  • St Mary-Corwin Hospital Hospital · Pueblo, CO
  • Enhabit Home Health Home health agency · Greenwood Village, CO

Colleagues at Portercare Adventist Health System

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 767 clinicians in the practice; 12 are shown here.

Other providers in Greenwood Village