Physician Profile
Unclaimed ProfileAbout SIDERAS
William Sideras, PA-C is a physician assistant based in Calumet Park, IL. William is a 2019 graduate of Southern Illinois University School of Medicine. According to Medicare claims data, William cared for 239 Medicare patients across 279 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (630) 581-5372
- Email not available
Practice Locations
12850 S ASHLAND AVE
Calumet Park, IL 60827
Procedures Most Often Billed to Medicare
279 services · 239 patients · 8 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
60 |
| Detection test by immunoassay with direct visual observation for influenza virus | Lab test | 87804 |
60 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
39 |
| Detection test by immunoassay with direct visual observation for severe acute respiratory syndrome coronavirus 2 (covid-19) | Lab test | 87811 |
39 |
| Detection test by immunoassay with direct visual observation for streptococcus, group a (strep) | Lab test | 87880 |
29 |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
26 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
13 |
| Urinalysis, manual test | Lab test | 81002 |
13 |
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 4
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 1
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Trained at Southern Illinois University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 7 related providers in 1 group
Class of 2019 at Southern Illinois University School of Medicine 7
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Sideras's specialty?
Dr. Sideras is a physician assistant in Calumet Park, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “PHYSICIAN ASSISTANT”.
NPI registry
Where can I find Dr. Sideras?
Dr. Sideras is listed at 12850 S ASHLAND AVE, Calumet Park, IL 60827. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Sideras?
The number on file is (630) 581-5372. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Sideras's NPI number?
Dr. Sideras's National Provider Identifier is 1700429040. 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
What is Dr. Sideras's medical education?
Dr. Sideras attended Southern Illinois University School of Medicine, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Sideras been practicing?
Dr. Sideras has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Sideras known for?
According to Medicare billing data, Dr. Sideras the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Sideras confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Sideras. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.