Physician Profile
Timothy Chao, MD, PhD
Unclaimed ProfileAbout Dr. Chao
Timothy Chao, MD, PhD practices anatomic & clinical pathology in Philadelphia, PA. Timothy is a 2019 graduate of Perelman School of Med at the University of Pennsylvania. According to Medicare claims data, Timothy cared for 437 Medicare patients across 1,042 services. The services billed most often include pathology examination of tissue using a microscope, intermediate complexity, special stained specimen slides to examine tissue, each additional procedure, and special stained specimen slides to examine tissue, initial procedure.
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
Specialty
Credentials & Licensing
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.
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
- (215) 662-6503
- Email not available
Practice Locations
3400 SPRUCE ST
Philadelphia, PA 19104
Conditions Evaluated or Diagnosed
Within Anatomic & Clinical 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.
Conditions
Autoimmune & Joint
Blood cancer
Blood chemistry
Blood Disorders
- Bleeding Disorders
- Blood Clotting Gene Mutation
- Hemochromatosis
- High White Blood Cell Count
- Iron-deficiency anemia
Blood disorders
Cancer & Tumors
- Breast Cancer Biopsy Findings
- Leukemia
- Lipoma
- Prostate Cancer Biopsy Results
- Suspicious Lung Spot
- Swollen Lymph Nodes
Cervical & Women's Health
Cervical Health
Digestive pathology
Digestive System
- Abnormal Liver Enzymes
- Celiac disease
- H. pylori infection
- Inflammatory bowel disease
- Precancerous Colon Polyps
Hormones
Hormones & Metabolism
Infections
Infectious disease
Kidney & Urinary
Liver pathology
Prostate
Skin
Skin pathology
Urine & kidney
Procedures & services
Biopsy & Tissue Testing
- Bone Marrow Biopsy Testing
- Colon Polyp Biopsy Examination
- Fine Needle Aspiration Biopsy
- Frozen Section During Surgery
- Skin Biopsy Lab Review
- Special Tissue Staining
- Thyroid Biopsy Examination
Blood chemistry
Cancer & Genetic Testing
- Chromosome And Genetic Testing
- Flow Cytometry Test
- Liquid Biopsy
- Tumor Biomarker Testing
- Tumor Marker Testing
Cancer screening
Cardiac testing
Cervical & Women's Health
Fertility testing
Hormone testing
Immunology
Infection & Microbiology Tests
- Blood Culture Test
- Colon cancer screening consult
- H. Pylori Breath Test
- STI and STD Screening
- Urine sediment test
Infectious disease
Inflammation testing
Pathology Consultations
Post-Mortem & Forensic
Routine blood testing
Routine Blood Tests
- Blood Clotting Test
- Cholesterol screening
- Hemoglobin A1c Test
- Kidney Function Blood Test
- Liver Function Blood Test
- Routine blood work
- Thyroid Blood Test
Specialty Lab Panels
Tissue biopsy
Toxicology
Transfusion testing
Urine testing
Procedures Most Often Billed to Medicare
1,042 services · 437 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
679 | As often as other peers in Anatomic & Clinical Pathology |
| Special stained specimen slides to examine tissue, each additional procedure | Lab test | 88341 |
173 | As often as other peers in Anatomic & Clinical Pathology |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
87 | As often as other peers in Anatomic & Clinical Pathology |
| Pathology examination of tissue using a microscope, moderately high complexity | Lab test | 88307 |
37 | |
| Special stained specimen slides to examine tissue including interpretation and report | Lab test | 88313 |
33 | |
| Pathology examination of tissue using a microscope, high complexity | Lab test | 88309 |
20 | As often as other peers in Anatomic & Clinical Pathology |
| Surgical pathology consultation and report on referred slides prepared elsewhere | Lab test | 88321 |
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.
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 anatomic & clinical pathology specialists in Philadelphia 8
Same specialty, same city.
Trained at Perelman School of Med at the University of Pennsylvania 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2019 at Perelman School of Med at the University of Pennsylvania 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Dr. Chao?
Dr. Chao is an anatomic & clinical pathology in Philadelphia, PA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Dr. Chao's address?
Dr. Chao is listed at 3400 Spruce St, Philadelphia, PA 19104. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Chao?
The number on file is (215) 662-6503. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chao's NPI number?
Dr. Chao's National Provider Identifier is 1396308326. 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 Dr. Chao train?
Dr. Chao attended Perelman School of Med at the University of Pennsylvania, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chao been practicing?
Dr. Chao has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Chao perform?
According to Medicare billing data, Dr. Chao 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. Chao confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chao. 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.