Physician Profile
Karl Gaal, MD
Unclaimed ProfileAbout Dr. Gaal
Karl Gaal, MD is a healthcare provider in Duarte, CA specializing in hematopathology. Karl trained at University of California, Davis School of Medicine, graduating in 1994. Karl is also listed as specializing in anatomic & clinical pathology. Medicare claims data shows Karl provided 3,976 services to 2,390 patients. The services billed most often include special stained specimen slides to examine tissue, each additional procedure, protein measurement, serum, and pathology examination of tissue using a microscope, intermediate complexity.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
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
- (626) 359-8111
- Email not available
Practice Locations
1500 E DUARTE RD
Duarte, CA 91010
Conditions Evaluated or Diagnosed
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.
Conditions
Autoimmune & Joints
- Rheumatoid arthritis
Autopsy & Forensic
- Unexplained Cause of Death
Blood & Metabolism
- Vitamin D deficiency
Blood Disorders
- Bleeding Disorders
- Blood Clotting Gene Mutation
- Iron-deficiency anemia
- Leukemia
- Lymphoma
- Multiple Myeloma
- Sickle cell disease
Cancer
- Bladder cancer
- Bone tumors
- Brain tumor
- Breast cancer
- Cervical cancer
- Colon cancer
- Endometrial cancer
- Kidney cancer
- Liver cancer
- Lung cancer
- Oral cavity cancer
- Ovarian cancer
- Pancreatic cancer
- Prostate cancer
- Soft-tissue sarcoma
- Stomach cancer
- Testicular cancer
- Thyroid cancer
Cervical & Gynecologic
- Abnormal cervical cells and cervical dysplasia
- Endometrial hyperplasia
Digestive
- Gallbladder inflammation
- H. pylori infection
Digestive System
- Barrett's esophagus
- Celiac disease
- Colon polyps
Endocrine
- Thyroid nodules
Genetics
Hormones
- Testosterone deficiency
Immune System
- Autoimmune Diseases
Infections
- Hepatitis C
- Lyme disease
- Mononucleosis
- Sexually transmitted infections
Kidney
- Kidney Disease
Liver
- Metabolic dysfunction-associated steatohepatitis
Metabolic & Routine Lab
- Diabetes
- Gout
- High cholesterol
Pregnancy & Fertility
- Recurrent miscarriage
Skin Cancer
- Melanoma
- Moles and atypical moles
- Skin cancer
Women's Health
- Endometriosis
Procedures & services
Autopsy & Forensic
Blood Tests
- Blood Clotting Tests
- Blood Type Test
- Cholesterol screening
- Complete Blood Count
- Comprehensive Metabolic Panel
- Hemoglobin A1c Test
- Iron Level Blood Test
- Thyroid Blood Test
Cytology
- Body fluid cytology
- Urine cytology test
Cytology & Screening
- Fine-needle aspiration of a neck mass
- Human papillomavirus testing
- Pap Smear Test
- Thyroid Nodule Biopsy Review
Genetic & Molecular Tests
Genetics
Immune & Allergy Tests
- Allergy Blood Testing
- Autoimmune Antibody Panel
- Celiac Disease Blood Test
Infection Testing
- Blood Culture Test
- H. Pylori Breath Test
- Lyme disease test
Infection Tests
- STI Screening Panel
Lab & Blood Tests
- Cardiac enzyme blood test
- Pregnancy blood test
- Sed rate inflammation test
- Testosterone blood test
- Vitamin D blood test
Pathology Review
Pregnancy & Fertility
- Miscarriage tissue testing
- Placenta examination
- Sperm count test
Routine Lab Tests
- Colon cancer screening consult
- Urinalysis
- Urine Drug Screen
Tissue Biopsy
- Bone Marrow Biopsy Interpretation
- Breast Biopsy Analysis
- Cervical biopsy lab review
- Colon Polyp Testing
- Kidney Biopsy Examination
- Liver Biopsy Examination
- Lung biopsy lab review
- Lymph Node Biopsy Analysis
- Oral biopsy lab review
- Prostate Biopsy Analysis
- Skin Biopsy Lab Review
- Stomach biopsy lab review
- Uterine biopsy lab review
Procedures Most Often Billed to Medicare
3,976 services · 2,390 patients · 20 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Special stained specimen slides to examine tissue, each additional procedure | Lab test | 88341 |
1,020 | More than most peers in Hematopathology |
| Protein measurement, serum | Lab test | 84165 |
617 | More often than most peers in Hematopathology |
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
426 | More often than most peers in Hematopathology |
| Immunologic analysis technique on serum (immunofixation) | Lab test | 86334 |
302 | More often than most peers in Hematopathology |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
235 | More than most peers in Hematopathology |
| Flow cytometry technique for dna or cell analysis, 16 or more markers | Lab test | 88189 |
229 | More than most peers in Hematopathology |
| Microscopic genetic analysis of tumor, manual | Lab test | 88360 |
227 | More than most peers in Hematopathology |
| Bone marrow, smear interpretation | Lab test | 85097 |
201 | More than most peers in Hematopathology |
| Preparation of tissue for examination by removing any calcium present | Lab test | 88311 |
200 | More than most peers in Hematopathology |
| Surgical pathology consultation and report on referred slides prepared elsewhere | Lab test | 88321 |
87 | More than most peers in Hematopathology |
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 hematopathology specialists at this location 1
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 hematopathology specialists in Duarte 7
Same specialty, same city.
More connections — 8 related providers in 1 group
Class of 1994 at University of California, Davis School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Gaal specialize in?
Dr. Gaal is a hematopathology in Duarte, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. Gaal located?
Dr. Gaal is listed at 1500 E Duarte Rd, Duarte, CA 91010. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Gaal's phone number?
The number on file is (626) 359-8111. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Gaal?
Dr. Gaal's National Provider Identifier is 1710943543. 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. Gaal go to medical school?
Dr. Gaal attended University of California, Davis School of Medicine, graduating in 1994. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Gaal have?
Dr. Gaal has 32 years experience. Calculated from a graduation year of 1994, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Gaal do most often?
According to Medicare billing data, Dr. Gaal 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
Is Dr. Gaal's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gaal. 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.