Nader Mirhoseni, M.D.
NPI 1588645964 · Gastroenterology Physician · Mission Viejo, CA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nader Mirhoseni, M.D. is a Gastroenterology Physician provider in Mission Viejo, CA (NPI 1588645964).
Provider details
- NPI number
- 1588645964
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A85775 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,777 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 450 | $113 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 318 | $166 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 157 | $129 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 140 | $90 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 124 | $127 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 81 | 22 |
| Linaclotidebrand: Linzess | 72 | 14 |
| Pantoprazole Sodium | 63 | 19 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 52 | 51 |
| Lipase/Protease/Amylasebrand: Zenpep | 39 | — |
| Sucralfate | 35 | — |
| Lipase/Protease/Amylasebrand: Creon |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,360 across 56 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 26921 Crown Valley PkwySuite 201Mission Viejo, CA 92691-6501Phone: (949) 348-2900Fax: (949) 348-0960
Registry dates
- Enumerated
- 2005-11-10
- Last updated
- 2020-10-21
- Certified
- 2020-10-21
Frequently asked questions
- What is Nader Mirhoseni's NPI number?
- Nader Mirhoseni's National Provider Identifier (NPI) is 1588645964, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nader Mirhoseni's specialty?
- Nader Mirhoseni is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Nader Mirhoseni located?
- Nader Mirhoseni's practice location on file with NPPES is 26691 Plaza Ste 150, Mission Viejo, CA 92691-6329.
- What is Nader Mirhoseni's phone number?
- The practice phone number listed in the NPPES registry for Nader Mirhoseni is (949) 348-2900.
- Does Nader Mirhoseni accept Medicare?
- Nader Mirhoseni is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nader Mirhoseni's NPI active?
- Yes — Nader Mirhoseni's NPI (1588645964) is active in the NPPES registry as of the last update on 2020-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.