Dr. William Kwok Kuen Wan , MD
General Practice • Chicago, IL
2262 S. Wentworth Ave, 2nd Floor
Chicago, IL 60616
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 16, 2009; this date does not establish years in practice.
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Published CMS data list 57 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Clindamycin Hcl — 31 prescription fills, including refills.
- Chlorhexidine Gluconate — 26 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table · Guide: How to read Medicare Part D prescriber data
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Fewer Part D prescriptions than 70% of clinicians listed under General Practice in Chicago, IL (2024, 21 clinicians with data). Median for this group: 411. Middle half: 44 to 1,074.
Fewer Part D prescriptions than 75% of clinicians listed under General Practice in Illinois (2024, 57 clinicians with data). Median for this group: 441. Middle half: 57 to 2,096.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 14 in 2019 to 57 in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2019–2024.
Practice Location & Contact Primary Location
2262 S. Wentworth Ave
2nd Floor
Chicago, IL 60616
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
62 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$278 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2023
All general payments: $245.27 across 4 records.
By nature of payment
- Travel and Lodging: $178.22 across 2 records.
- Food and Beverage: $67.05 across 2 records.
Reporting-company totals
- Dentsply Sirona Inc: $178.22 across 2 records.
- BIOLASE, INC.: $67.05 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2023 (published June 30, 2026).
NPI first issued
2009
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Chicago and Illinois
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
Fewer Part D prescriptions than 70% of clinicians listed under General Practice in Chicago, IL (2024, 21 clinicians with data). Median for this group: 411. Middle half: 44 to 1,074.
Fewer Part D prescriptions than 75% of clinicians listed under General Practice in Illinois (2024, 57 clinicians with data). Median for this group: 441. Middle half: 57 to 2,096.
Part D drug cost
A lower Part D drug cost than 85% of clinicians listed under General Practice in Chicago, IL (2024, 21 clinicians with data). Median for this group: $15,854. Middle half: $397 to $31,133.
A lower Part D drug cost than 90% of clinicians listed under General Practice in Illinois (2024, 57 clinicians with data). Median for this group: $25,642. Middle half: $1,202 to $115,857.
98 active clinicians are listed under General Practice with a practice address in Chicago, IL (291 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
3.1% of these 98 clinicians have the CMS telehealth indicator.
12.2% of these 98 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part D prescriptions
Medicare Part D prescriptions went from 14 in 2019 to 57 in 2024.
- 2019: 14
- 2021: 18
- 2022: 43
- 2023: 70
- 2024: 57
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30-day fills
30-day fills went from 17 in 2019 to 62 in 2024.
- 2019: 17
- 2021: 21
- 2022: 49
- 2023: 70
- 2024: 62
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Part D drug cost
Part D drug cost went from $116 in 2019 to $278 in 2024.
- 2019: $116
- 2021: $113
- 2022: $239
- 2023: $540
- 2024: $278
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Industry payments (Open Payments)
CMS data for industry payments (Open Payments) are available for 2023 only.
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $245.27.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Dentsply Sirona Inc |
Travel and Lodging
In-kind items and services
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Implant Dentistry | General | $89.11 |
| Dentsply Sirona Inc |
Travel and Lodging
In-kind items and services
|
Implant Dentistry | General | $89.11 |
| BIOLASE, INC. |
Food and Beverage
Cash or cash equivalent
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Waterlase iPlus | General | $42.44 |
| BIOLASE, INC. |
Food and Beverage
Cash or cash equivalent
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Waterlase iPlus | General | $24.61 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Clindamycin Hcl | Clindamycin Hcl | 31 | 187 | $161.07 | 24 |
| Chlorhexidine Gluconate | Chlorhexidine Gluconate | 26 | 764 | $116.50 | 18 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
NUCC Taxonomy Code: 122300000X
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
Career & Practice History
NPI enumerated June 16, 2009.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
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Mailing Address
2262 S. Wentworth Ave, 2nd Floor
Chicago, IL 60616
Phone: 3127911013