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Edit this profileAt a glance
- 568 E Herndon Ave, Suite 201, Fresno, CA 93720
About Dr. Martinez
Based in Fresno, CA, Gregory Martinez, M.D. is listed in the NPI registry under nephrology. Gregory graduated from Jefferson Medical College of Thomas Jefferson University in 2006. Gregory is also listed as specializing in internal medicine. According to Medicare claims data, Gregory cared for 3,824 Medicare patients across 10,476 services. The services billed most often include injection, epoetin alfa, (for non-esrd use), 1000 units, subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. NPI 1982863098 identifies this record in the national registry.
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
- (559) 228-6600
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
568 E HERNDON AVE SUITE 201
Fresno, CA 93720
Conditions Commonly Evaluated or Treated
Within Nephrology 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
Most searched conditions
Acid-base disorders
Anatomical conditions
Autoimmune conditions
Blood disorders
Blood pressure
Cysts and growths
Diabetes complications
Dialysis complications
Electrolyte disorders
Fluid retention
Genetic disorders
Hormone disorders
Infections
Inflammatory conditions
Kidney damage
Kidney failure
Kidney filter diseases
Lab abnormalities
Metabolic disorders
Multi-organ conditions
Structural kidney issues
Symptoms
Urine abnormalities
Urine symptoms
Vascular conditions
Vascular kidney issues
Procedures & services
Medical diet therapy
Most searched procedures
Consultations
Diagnostic tests
Diagnostics
Dialysis
Dialysis access
- Dialysis Access Physical Exam
- Dialysis Catheter Removal
- Dialysis Fistula Repair
- Temporary Dialysis Line Placement
Diet and nutrition
Imaging
Infusions
Interventional procedures
Lab tests
- 24-hour urine test
- Comprehensive Metabolic Panel
- Kidney Function Blood Test
- Parathyroid hormone monitoring
- Urine protein check
- Urine sediment test
Medication management
- Active Vitamin D Therapy
- Resistant Blood Pressure Medication Adjustment
- Steroid Therapy For Kidney Inflammation
Medication therapy
- Acid reducer treatment for kidneys
- Phosphate binder therapy
- Potassium lowering treatment
- Red blood cell booster injections
- Water pill adjustment
Patient education
Prevention
Procedures
Specialized therapies
Supportive care
Surgical procedures
Transplant care
Vascular access
Procedures Most Often Billed to Medicare
10,476 services · 3,824 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
592 | More often than most peers in Nephrology |
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
335 | More than most peers in Nephrology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
159 | More than most peers in Nephrology |
| Injection, epoetin alfa, (for non-esrd use), 1000 units | Drug given | J0885 |
3,552 | More often than most peers in Nephrology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
804 | More than most peers in Nephrology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
692 | More than most peers in Nephrology |
| Phosphate level | Lab test | 84100 |
481 | More than most peers in Nephrology |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
465 | More often than most peers in Nephrology |
| Magnesium level | Lab test | 83735 |
462 | More often than most peers in Nephrology |
| Creatinine level to test for kidney function or muscle injury | Lab test | 82570 |
354 | More often than most peers in Nephrology |
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 kidney specialists at this location 8
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 kidney specialists in Fresno 6
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Jefferson Medical College of Thomas Jefferson University 8
Other providers in the same specialty who trained at the same institution.
Class of 2006 at Jefferson Medical College of Thomas Jefferson University 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of needle into vein for collection of blood sample 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Gregory Martinez's specialty?
Gregory Martinez is a kidney specialist in Fresno, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nephrology”.
NPI registry
Where can I find Gregory Martinez?
Gregory Martinez is listed at 568 E Herndon Ave Suite 201, Fresno, CA 93720. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Gregory Martinez?
The number on file is (559) 228-6600. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Gregory Martinez's NPI number?
Gregory Martinez's National Provider Identifier is 1982863098. 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 Gregory Martinez's education?
Gregory Martinez attended Jefferson Medical College of Thomas Jefferson University, graduating in 2006. This comes from the CMS National Downloadable File.
CMS public data
How long has Gregory Martinez been practicing?
Gregory Martinez has 20 years experience. Calculated from a graduation year of 2006, reported in the CMS National Downloadable File.
CMS public data
What is Gregory Martinez known for?
According to Medicare billing data, Gregory Martinez performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as dialysis services, 4 or more physician visits per month and injection of drug or substance under skin or into muscle, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Gregory Martinez confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gregory Martinez. If this is you, claiming it is free.
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