Doctor profile · Federal record
Dr. William Tan, D.O.
Family Medicine Physician (CMS: Family Practice) · Olympia Fields, IL
- NPI 1891112306
- Accepts Medicare
- 13 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
20060 Governors Dr Ste 204
Olympia Fields, IL 604611099
(708) 283-8300
fax (708) 283-9245
Credentials & registration
- NPI registered
- March 2014 — 12 yrs on file
- Profile last updated
- December 25, 2021
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207Q00000X — NUCC code
- State license (1)
- Illinois #036144064
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1891112306. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
692
Distinct HCPCS
10
Medicare allowed
$53,301
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 243 | 104 | $133 | |
83036 |
Hemoglobin a1c level | 124 | 66 | $9 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 80 | 80 | $134 | |
96372 |
Injection of drug or substance under skin or into muscle | 55 | 34 | $14 | |
J1040 |
Injection, methylprednisolone acetate, 80 mg | 49 | 35 | $12 | |
G0008 |
Administration of influenza virus vaccine | 33 | 33 | $32 | |
90732 |
Pneumococcal vaccine, 23-valent | 21 | 21 | $125 | |
93000 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | 21 | 19 | $15 | |
G0009 |
Administration of pneumococcal vaccine | 21 | 21 | $31 | |
90694 |
Influenza vaccine, quadrivalent inactivated, 0.5 ml dosage | 19 | 19 | $76 |
In context: peer comparison
Among 6 peers in Olympia Fields Family Medicine Physician, average services per provider: 93. This provider delivers 7.4× the peer median.Open Payments
Industry payments received
All-time total
$23
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Novo Nordisk INC | 1 | $22.88 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
1,570
Patients
472
Total drug cost
$22,137
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 248 | 81 | $4,649 |
| Amlodipine Besylate | Generic | 162 | 47 | $1,179 |
| Hydrochlorothiazide | Generic | 143 | 48 | $739 |
| Levothyroxine Sodium | Generic | 137 | 39 | $2,267 |
| Tramadol Hcl | Generic | 120 | 26 | $738 |
| Metoprolol Succinate | Generic | 101 | 34 | $1,656 |
| Lisinopril | Generic | 99 | 30 | $1,029 |
| Losartan Potassium | Generic | 98 | 29 | $1,555 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 78 | 12 | $2,092 |
| Alprazolam | Generic | 73 | 19 | $344 |
Hospital affiliations
Frequently asked questions
What is Dr. William Tan's medical specialty?
Dr. William Tan practices Family Medicine Physician in Olympia Fields, IL.
Where does Dr. William Tan practice?
Dr. William Tan practices at 20060 Governors Dr Ste 204, Olympia Fields, IL 604611099. Office phone: 7082838300.
What is Dr. William Tan's NPI?
Dr. William Tan's National Provider Identifier (NPI) is 1891112306, issued by NPPES.
Does Dr. William Tan accept Medicare assignment?
Yes. Dr. William Tan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Tan commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Hemoglobin a1c level (HCPCS 83036); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.