Provider Profile
Clarence W. Chan is a healthcare provider in Chicago, IL specializing in pathology — clinical. Clarence trained at Northwestern University Feinberg Medical School, graduating in 2020. Clarence is also listed as specializing in pathology. According to Medicare claims data, Clarence cared for 256 Medicare patients across 294 services. The services billed most often include protein measurement, serum and immunologic analysis technique on serum (immunofixation).
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
5841 S MARYLAND AVE # MC3083
Chicago, IL 60637
Within Pathology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Autoimmune & Joints
Autopsy & Forensic
Blood & Metabolism
Blood Disorders
Cancer
Cervical & Gynecologic
Digestive
Digestive System
Endocrine
Genetics
Hormones
Immune System
Infections
Kidney
Liver
Metabolic & Routine Lab
Pregnancy & Fertility
Skin Cancer
Women's Health
Autopsy & Forensic
Blood Tests
Cytology
Cytology & Screening
Genetic & Molecular Tests
Genetics
Immune & Allergy Tests
Infection Testing
Infection Tests
Lab & Blood Tests
Pathology Review
Pregnancy & Fertility
Routine Lab Tests
Tissue Biopsy
294 services · 256 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Protein measurement, serum | Lab test | 84165 |
172 | Less often than most peers in Pathology — Clinical |
| Immunologic analysis technique on serum (immunofixation) | Lab test | 86334 |
122 | As often as other peers in Pathology — Clinical |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Clarence W. Chan is a pathologist in Chicago, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pathology — Clinical”.
NPI registry
Clarence W. Chan is listed at 5841 S Maryland Ave # Mc3083, Chicago, IL 60637. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (773) 834-7708. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Clarence W. Chan's National Provider Identifier is 1285173906. 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
Clarence W. Chan attended Northwestern University Feinberg Medical School, graduating in 2020. This comes from the CMS National Downloadable File.
CMS public data
Clarence W. Chan has 6 years experience. Calculated from a graduation year of 2020, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Clarence W. Chan 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
Not yet. This profile is built from public federal data and has not been confirmed by Clarence W. Chan. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.