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Edit this profileAt a glance
- 101 E Valencia Mesa Dr, Fullerton, CA 92835
About Dr. John
Sandhya M. John, M.D. is a healthcare provider in Fullerton, CA specializing in pathology. Sandhya is also listed as specializing in student in an organized health care education program and anatomic & clinical pathology. Medicare claims data shows Sandhya provided 2,481 services to 1,391 patients. 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. This provider record is associated with NPI 1528402427.
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
- (714) 446-7505
- Email not available
Practice Locations
101 E VALENCIA MESA DR
Fullerton, CA 92835
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
Autopsy & Forensic
- Unexplained Cause of Death
Blood & Metabolism
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
Digestive
- Gallbladder inflammation
- H. pylori infection
Digestive System
Endocrine
Genetics
- Inherited Cancer Risk
Hormones
Immune System
- Autoimmune Diseases
Infections
- Hepatitis C
- Lyme disease
- Mononucleosis
- Sexually transmitted infections
Kidney
Liver
Metabolic & Routine Lab
Pregnancy & Fertility
Skin Cancer
Women's Health
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
Infection Tests
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
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
2,481 services · 1,391 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
931 | More often than most peers in Pathology |
| Special stained specimen slides to examine tissue, each additional procedure | Lab test | 88341 |
551 | More often than most peers in Pathology |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
183 | More often than most peers in Pathology |
| Pathology examination of tissue using a microscope, moderately high complexity | Lab test | 88307 |
115 | More often than most peers in Pathology |
| Microscopic genetic analysis of tumor, manual | Lab test | 88360 |
109 | More often than most peers in Pathology |
| Pathology examination of tissue using a microscope, moderately low complexity | Lab test | 88304 |
96 | More often than most peers in Pathology |
| Cell examination of specimen, selective cellular enhancement technique | Lab test | 88112 |
96 | As often as other peers in Pathology |
| Preparation of tissue for examination by removing any calcium present | Lab test | 88311 |
77 | More often than most peers in Pathology |
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
76 | More often than most peers in Pathology |
| Special stained specimen slides to examine tissue including interpretation and report | Lab test | 88313 |
71 | As often as other peers in 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.
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 pathologists in Fullerton 2
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2012 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is Sandhya M. John?
Sandhya M. John is a pathologist in Fullerton, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Pathology”.
NPI registry
What is Sandhya M. John's address?
Sandhya M. John is listed at 101 E Valencia Mesa Dr, Fullerton, CA 92835. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Sandhya M. John?
The number on file is (714) 446-7505. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Sandhya M. John?
Sandhya M. John's National Provider Identifier is 1528402427. 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 Sandhya M. John train?
Sandhya M. John attended Other, graduating in 2012. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Sandhya M. John have?
Sandhya M. John has 14 years experience. Calculated from a graduation year of 2012, reported in the CMS National Downloadable File.
CMS public data
What procedures does Sandhya M. John perform?
According to Medicare billing data, Sandhya M. John 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 Sandhya M. John's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Sandhya M. John. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.