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Edit this profileAt a glance
- 185 Berry St, San Francisco, CA 94107
About Dr. Karlon
William J. Karlon, M.D. is a healthcare provider in San Francisco, CA specializing in anatomic & clinical pathology. William trained at University of California, Irvine, California College of Medicine, graduating in 2002. According to Medicare claims data, William cared for 572 Medicare patients across 699 services. The services billed most often include flow cytometry technique for dna or cell analysis, 16 or more markers, flow cytometry technique for dna or cell analysis, 9 to 15 markers, and molecular pathology procedure; physician interpretation and report. This provider record is associated with NPI 1154365088.
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
- (415) 353-4721
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
185 BERRY ST
San Francisco, CA 94107
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
Pathology Consultations
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
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
699 services · 572 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Flow cytometry technique for dna or cell analysis, 16 or more markers | Lab test | 88189 |
486 | More than most peers in Anatomic & Clinical Pathology |
| Flow cytometry technique for dna or cell analysis, 9 to 15 markers | Lab test | 88188 |
111 | More than most peers in Anatomic & Clinical Pathology |
| Molecular pathology procedure; physician interpretation and report | Billing code | G0452 |
79 | As often as other peers in Anatomic & Clinical Pathology |
| Antibody evaluation, initial single antibody stain procedure | Lab test | 88346 |
12 | Less often than most peers in Anatomic & Clinical Pathology |
| Antibody evaluation, each additional single antibody stain procedure | Lab test | 88350 |
11 | Less often than most peers in Anatomic & Clinical Pathology |
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.
Other anatomic & clinical pathology specialists at this location 4
Same specialty, same street address — most likely the same department or group.
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 San Francisco 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at University of California, Irvine, California College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at University of California, Irvine, California College of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is William J. Karlon?
William J. Karlon is an anatomic & clinical pathology in San Francisco, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is William J. Karlon's address?
William J. Karlon is listed at 185 Berry St, San Francisco, CA 94107. 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 J. Karlon?
The number on file is (415) 353-4721. Contact the office directly to confirm availability and scheduling.
NPI registry
What is William J. Karlon's NPI number?
William J. Karlon's National Provider Identifier is 1154365088. 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 J. Karlon train?
William J. Karlon attended University of California, Irvine, California College of Medicine, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has William J. Karlon been practicing?
William J. Karlon has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What procedures does William J. Karlon perform?
According to Medicare billing data, William J. Karlon 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 William J. Karlon confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by William J. Karlon. If this is you, claiming it is free.
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