Jun-Ichi Ohara, M.D., PH.D.
NPI 1578665667 · Gastroenterology Physician · Irvine, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jun-Ichi Ohara, M.D., PH.D. is a Gastroenterology Physician provider in Irvine, CA (NPI 1578665667).
Provider details
- NPI number
- 1578665667
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- AO53621A (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
823 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 390 | $194 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 139 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 125 | $139 |
| Administration of Influenza Virus VaccineG0008 | 52 | $35 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 32 | $141 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 178 | 58 |
| Amlodipine Besylate | 121 | 34 |
| Pantoprazole Sodium | 77 | 36 |
| Losartan Potassium | 67 | 23 |
| Levothyroxine Sodium | 51 | 12 |
| Fenofibrate | 42 | 12 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$18 across 1 record (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
Registry dates
- Enumerated
- 2006-09-01
- Last updated
- 2020-02-18
- Certified
- 2020-02-18
Frequently asked questions
- What is Jun-Ichi Ohara's NPI number?
- Jun-Ichi Ohara's National Provider Identifier (NPI) is 1578665667, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jun-Ichi Ohara's specialty?
- Jun-Ichi Ohara is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jun-Ichi Ohara located?
- Jun-Ichi Ohara's practice location on file with NPPES is 22 Odyssey, Irvine, CA 92618-3195.
- What is Jun-Ichi Ohara's phone number?
- The practice phone number listed in the NPPES registry for Jun-Ichi Ohara is (949) 654-8963.
- Does Jun-Ichi Ohara accept Medicare?
- Jun-Ichi Ohara is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jun-Ichi Ohara's NPI active?
- Yes — Jun-Ichi Ohara's NPI (1578665667) is active in the NPPES registry as of the last update on 2020-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.