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Edit this profileAt a glance
- 11100 Warner Ave Ste 158, Fountain Valley, CA 92708
About Dr. Mostafa
Based in Fountain Valley, CA, Essam A. Mostafa, M.D. is listed in the NPI registry under nephrology. According to Medicare claims data, Essam cared for 1,004 Medicare patients across 4,854 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, critical care, first 30-74 minutes, and initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes. NPI 1316932270 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
- (714) 486-2586
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
11100 WARNER AVE STE 158
Fountain Valley, CA 92708
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
4,854 services · 1,004 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Hemodialysis procedure with physician evaluation | Treatment | 90935 |
261 | More than most peers in Nephrology |
| Dialysis services, 4 or more physician visits per month (20 years or older) | Treatment | 90960 |
186 | More often than most peers in Nephrology |
| Dialysis procedure including 1 evaluation | Treatment | 90945 |
53 | More often than most peers in Nephrology |
| Dialysis services, 2-3 physician visits per month (20 years or older) | Treatment | 90961 |
18 | Less often than most peers in Nephrology |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
2,843 | More than most peers in Nephrology |
| Critical care, first 30-74 minutes | Office visit | 99291 |
901 | More than most peers in Nephrology |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
386 | 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 |
144 | As often as other peers in Nephrology |
| Telephone medical discussion with physician, 11-20 minutes | Office visit | 99442 |
46 | More often than most peers in Nephrology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
16 | Less 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 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
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.
More connections — 29 related providers in 4 groups
Other kidney specialists in Fountain Valley 5
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1992 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Hemodialysis procedure with physician evaluation 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Essam A. Mostafa specialize in?
Essam A. Mostafa is a kidney specialist in Fountain Valley, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Nephrology”.
NPI registry
Where is Essam A. Mostafa located?
Essam A. Mostafa is listed at 11100 Warner Ave Ste 158, Fountain Valley, CA 92708. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Essam A. Mostafa's phone number?
The number on file is (714) 486-2586. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Essam A. Mostafa's NPI number?
Essam A. Mostafa's National Provider Identifier is 1316932270. 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 Essam A. Mostafa train?
Essam A. Mostafa attended Other, graduating in 1992. This comes from the CMS National Downloadable File.
CMS public data
How long has Essam A. Mostafa been practicing?
Essam A. Mostafa has 34 years experience. Calculated from a graduation year of 1992, reported in the CMS National Downloadable File.
CMS public data
What does Essam A. Mostafa do most often?
According to Medicare billing data, Essam A. Mostafa provides treatments such as hemodialysis procedure with physician evaluation and dialysis services, 4 or more physician visits per month, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Essam A. Mostafa confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Essam A. Mostafa. If this is you, claiming it is free.
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