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- 101 the City Dr S, Orange, CA 92868
About Dr. Gamayo
Ashley C. Gamayo, MD, MPH practices hematopathology in Orange, CA. Medicare claims data shows Ashley provided 2,163 services to 871 patients. The services billed most often include special stained specimen slides to examine tissue, each additional procedure, special stained specimen slides to examine tissue including interpretation and report, and pathology examination of tissue using a microscope, intermediate complexity. The provider's National Provider Identifier (NPI) is 1992292767.
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) 385-2921
- Email not available
Practice Locations
101 THE CITY DR S
Orange, CA 92868
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
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
Digestive System
Endocrine
Genetics
Hormones
Immune System
Infections
Kidney
Liver
Metabolic & Routine Lab
Pregnancy & Fertility
Skin Cancer
Women's Health
Procedures & services
Cytology & Screening
- Fine-needle aspiration of a neck mass
- Human papillomavirus testing
- Pap Smear Test
- Thyroid Nodule Biopsy Review
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
Genetic & Molecular Tests
Genetics
Immune & Allergy Tests
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
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
2,163 services · 871 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Special stained specimen slides to examine tissue, each additional procedure | Lab test | 88341 |
716 | More often than most peers in Hematopathology |
| Special stained specimen slides to examine tissue including interpretation and report | Lab test | 88313 |
347 | More often than most peers in Hematopathology |
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
224 | More often than most peers in Hematopathology |
| Flow cytometry technique for dna or cell analysis, 16 or more markers | Lab test | 88189 |
219 | More often than most peers in Hematopathology |
| Microscopic genetic analysis of tissue, manual, each additional multiplex stain procedure | Lab test | 88377 |
149 | Too few peers to compare |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
129 | More often than most peers in Hematopathology |
| Microscopic genetic analysis of tumor, manual | Lab test | 88360 |
97 | More often than most peers in Hematopathology |
| Preparation of tissue for examination by removing any calcium present | Lab test | 88311 |
88 | As often as other peers in Hematopathology |
| Bone marrow, smear interpretation | Lab test | 85097 |
87 | More often than most peers in Hematopathology |
| Genetic sequencing localization, initial procedure | Lab test | 88365 |
48 | More often 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.
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 Orange 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 2017 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Dr. Gamayo's specialty?
Dr. Gamayo is a hematopathology in Orange, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Gamayo?
Dr. Gamayo is listed at 101 the City Dr S, Orange, CA 92868. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Gamayo?
The number on file is (714) 385-2921. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Dr. Gamayo?
Dr. Gamayo's National Provider Identifier is 1992292767. 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
What is Dr. Gamayo's medical education?
Dr. Gamayo attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Gamayo have?
Dr. Gamayo has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Gamayo known for?
According to Medicare billing data, Dr. Gamayo 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. Gamayo's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Gamayo. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.