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Edit this profileAt a glance
- 20060 Governors Dr Ste 204, Olympia Fields, IL 60461
About Dr. Tan
Based in Olympia Fields, IL, William S. Tan, D.O. is listed in the NPI registry under family medicine. William graduated from Nova Southeastern College of Osteo Medicine in 2013. According to Medicare claims data, William cared for 1,228 Medicare patients across 5,341 services. The services billed most often include injection, methylprednisolone acetate, 1 mg, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and hemoglobin a1c level. NPI 1891112306 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (708) 283-8300
- Email not available
Practice Locations
20060 GOVERNORS DR STE 204
Olympia Fields, IL 60461
Conditions Commonly Evaluated or Treated
Within Family Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive
Genitourinary and reproductive
- Erectile dysfunction
- Heavy periods
Musculoskeletal and pain
Neurologic and behavioral
Respiratory and infectious
- Acute bronchitis
- Asthma
- Sinus infection
Skin
Common childhood and ear conditions
- Ear infection
- Pink eye
Pain & Joints
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive interventions
- Birth control counseling
- Smoking cessation counseling
Screening and testing
- Cholesterol screening
- Depression screening
- Diabetes and prediabetes screening
- EKG
Diagnostic Tests
- COVID-19 testing
- Rapid Strep and Flu Swabs
- Urine Drug Screen
Exams & Screenings
- Camp and School Physical
- Pre-Op Clearance Exam
Foot and Leg Pain
- Toenail Fungus Treatment
Heart & Circulation
Injections
- Immunotherapy
- Vitamin B12 Injections
Lungs & Breathing
- Pulmonary function test
Minor Procedures
- Burn and Wound Care
- Ingrown toenail removal
- Suture removal
Occupational Health
- DOT Physical
Office procedures
- Earwax removal
- Incision and drainage of an abscess
- Superficial foreign-body removal
Pain Management
- Joint injections
Preventive Care
- Chronic Illness Checkup
- Routine Vaccines
- Travel Vaccines And Consult
Respiratory
- Breathing Treatment
Senior Care
- Cognitive Assessment
Sexual & Reproductive Health
- STD Swabs and Screening
Skin Procedures
- Cyst Removal
- Precancerous Sun Spot Freezing
- Skin Tag Removal
- Wart Removal
Sleep Health
- At-Home Sleep Study Order
Urgent Care Procedures
- Stitches and Laceration Repair
Wellness & Weight
- Weight Management Consult
Women's Health
- Hormone Replacement Therapy Consultation
Procedures Most Often Billed to Medicare
5,341 services · 1,228 patients · 17 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Influenza vaccine, inactivated | Treatment | 90653 |
107 | More than most peers in Family Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
65 | More often than most peers in Family Medicine |
| Imaging of retina with remote review by physician | Treatment | 92228 |
56 | More than most peers in Family Medicine |
| Pneumococcal vaccine, 23-valent | Treatment | 90732 |
40 | More than most peers in Family Medicine |
| Influenza vaccine, trivalent derived from cell cultures | Treatment | 90661 |
25 | As often as other peers in Family Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
22 | As often as other peers in Family Medicine |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
3,920 | More often than most peers in Family Medicine |
| Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | Drug given | J3420 |
19 | Less often than most peers in Family Medicine |
| Injection, methylprednisolone acetate, 80 mg | Drug given | J1040 |
13 | Less often than most peers in Family Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
373 | More often than most peers in Family Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other family doctors in Olympia Fields 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Nova Southeastern College of Osteo Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Nova Southeastern College of Osteo Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine, inactivated 8
Providers in IL who bill this service to Medicare most often.
Common questions
What kind of doctor is William S. Tan?
William S. Tan is a family doctor in Olympia Fields, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Family Medicine”.
NPI registry
What is William S. Tan's address?
William S. Tan is listed at 20060 Governors Dr Ste 204, Olympia Fields, IL 60461. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with William S. Tan?
The number on file is (708) 283-8300. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William S. Tan's NPI number?
William S. Tan's National Provider Identifier is 1891112306. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did William S. Tan train?
William S. Tan attended Nova Southeastern College of Osteo Medicine, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How long has William S. Tan been practicing?
William S. Tan has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What procedures does William S. Tan perform?
According to Medicare billing data, William S. Tan provides treatments such as influenza vaccine, inactivated and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has William S. Tan confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William S. Tan. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.