Dr. Jun-Ichi Ohara, MD, PhD
- Medicare services, 2024
- 870
- Medicare patients, 2024
- 128
- Part D claims, 2024
- 1,225
- Hospital affiliations
- 1
- Industry payments
- $97
- Practice address
- 22 Odyssey, Suite 175, Irvine, CA 92618
- Practice phone
- Call (949) 654-8963
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Odyssey ASC Endoscopy Center
Surgery Center - Medicare-Certified · Irvine, California
Find Dr. Ohara's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jun-Ichi Ohara is a gastroenterologist in Irvine, California
Dr. Ohara practices at Odyssey ASC Endoscopy Center in Irvine, California.
Dr. Ohara's NPI, 1578665667, was assigned on September 1, 2006. Dr. Ohara graduated from Okayama Univ- Fac Med in 1975. Dr. Ohara holds California license AO53621A.
- NPI
- 1578665667NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335183573
- NPI enumeration date
- September 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (949) 654-8963
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 77
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jun-Ichi Ohara practices at Odyssey ASC Endoscopy Center in Irvine, California
Dr. Ohara's primary practice is Odyssey ASC Endoscopy Center, at 22 Odyssey, Suite 175, Irvine, CA 92618. The practice phone is (949) 654-8963.
- Odyssey ASC Endoscopy Center22 Odyssey, Suite 175, Irvine, CA 92618Phone(949) 654-8963
Source: Dmand AI Affiliation Data
Dr. Jun-Ichi Ohara is affiliated with 3 sites of care and 1 medical group
Dr. Ohara's primary practice is Odyssey ASC Endoscopy Center in Irvine, California. Dr. Ohara is also affiliated with Hoag Hospital Newport Beach. The medical group on file is Ohara & Associates. Dmand AI also links Dr. Ohara to 1 more group practice or clinic, named with a free account. Dr. Ohara's employer is on file too: a surgery center (asc).
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jun-Ichi Ohara's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ohara practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Odyssey ASC Endoscopy Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jun-Ichi Ohara is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Ohara's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Ohara is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Ohara's licenses on file in 3 states: California, Utah and Wyoming.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
- Utah license
- Wyoming license
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute mini-stroke (TIA), acute skin infection, aneurysm, atrial fibrillation and flutter, chronic anemia and chronic diabetes among the conditions Dr. Ohara treats.
Gastroenterologists near Dr. Ohara
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jun-Ichi Ohara billed Medicare for 870 services in 2024
CMS data shows 870 Medicare services from Dr. Ohara across 11 procedure codes in 2024, for 128 Medicare patients. Medicare paid $80,786 for them.
Dr. Ohara's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4092024: 54233%
- Surgery
- 2023: 1212024: 18553%
- Tests and treatments
- 2023: 692024: 7712%
- Other services
- 2023: 382024: 5237%
- Lab and pathology
- 2023: 252024: 1444%
Where Dr. Ohara's Medicare services took place, 2024
- In an office82495%
- In a facility465%
Dr. Ohara compared with the California median for gastroenterologists, 2024
- Dr. Ohara
- California median
- Medicare services
- 870vs 58648% above
- Medicare patients
- 128vs 30258% below
- Part D claims
- 860vs 3802.3 times
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Ohara's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ohara and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jun-Ichi Ohara treated 128 Medicare patients in 2024, average age 77
CMS counts 128 Medicare patients who saw Dr. Ohara in 2024. The largest group is 75 to 84, with 53 patients. 75% of them have high cholesterol, and 71% have high blood pressure. Their average risk score is 0.69, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ohara's median patient age at 59, with 50% women.
Dr. Ohara's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ohara's Medicare patients by sex, 2024
- Women7256%
- Men5644%
Chronic conditions among Dr. Ohara's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Diabetes24%
- Arthritis17%
- Osteoporosis15%
- Cancer14%
- Ischemic heart disease12%
- Chronic kidney disease11%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ohara's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women50%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jun-Ichi Ohara wrote 1,225 Medicare Part D claims in 2024
In 2024, Dr. Ohara wrote 1,225 Medicare Part D claims for 136 patients. 91% of them were for generic drugs. CMS names the drug for 860 of them, across 23 drugs with 11 or more claims each, at $27,801 in total drug cost. In 2023, CMS named 1,060 claims across 24 drugs.
Dr. Ohara's Part D claims by kind of drug, 2024
- Generic1,115 claims91%
- Brand-name99 claims8%
- Other11 claims1%
Dr. Ohara's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ohara's Part D claims, 2024
- Antibiotics2%23 of 1,225 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,0602024: 86019%
Drugs named by CMS: 23 in 2024, 24 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Jun-Ichi Ohara ranks in the 55th percentile for upper gastrointestinal (gi) endoscopy for acid reflux in Medicare
Dr. Ohara accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ohara as offering telehealth. CMS counts 29 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Ohara, more than 55% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Ohara ranks in Medicare procedure volume
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 55th percentile29 procedures
- Colonoscopy
- 52nd percentile27 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Jun-Ichi Ohara received $97 in industry payments from 2018 to 2024
CMS Open Payments shows 5 general payments to Dr. Ohara from 2 drug and device companies from 2018 to 2024. Food and beverage make up the largest share, 100% of the total. GlaxoSmithKline, LLC. paid the most, $79.
General payments to Dr. Ohara by program year, 2018 to 2024
Companies that paid Dr. Ohara the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jun-Ichi Ohara has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ohara, most recently CMS Stage 1 EHR in 2012.
Awards and honors for Dr. Ohara
- 2012
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Jun-Ichi Ohara graduated from Okayama Univ- Fac Med
Dr. Ohara graduated from Okayama Univ- Fac Med in 1975.
- Medical school
- Board certified in gastroenterology
Source: Dmand AI Professional Profile Data
Dr. Jun-Ichi Ohara accepts plans from 12 insurance carriers
Dr. Ohara is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +4 more carriersWith a free account
Plan types Dr. Ohara accepts, by number of carriers
- Medicare8
- PPO7
- HMO4
- POS4
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Jun-Ichi Ohara's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jun-Ichi Ohara
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jun-Ichi Ohara's NPI number?
Dr. Jun-Ichi Ohara's NPI number is 1578665667. It was assigned on September 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jun-Ichi Ohara?
Dr. Jun-Ichi Ohara is a gastroenterologist in Irvine, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Jun-Ichi Ohara practice?
Dr. Ohara practices at 22 Odyssey, Suite 175, Irvine, CA 92618. Dr. Ohara's primary practice is Odyssey ASC Endoscopy Center in Irvine, California. Dmand AI also links Dr. Ohara to 1 group practice or clinic.
What is Dr. Jun-Ichi Ohara's office phone number?
The practice phone on file for Dr. Ohara is (949) 654-8963.
What is Dr. Jun-Ichi Ohara's medical license number?
Dr. Ohara holds California license AO53621A, one of the licenses on file in 3 states.
Which states has Dr. Jun-Ichi Ohara been licensed in?
Dmand AI has state licenses on file for Dr. Ohara in California (1994 to 2026), Utah (1993 to 1996) and Wyoming (1993 to 1996).
Which hospitals is Dr. Jun-Ichi Ohara affiliated with?
Dr. Ohara is affiliated with Hoag Hospital Newport Beach.
What medical group is Dr. Jun-Ichi Ohara part of?
Dr. Ohara is linked to Ohara & Associates.
Does Dr. Jun-Ichi Ohara accept Medicare?
Yes. CMS data shows Dr. Ohara billed Medicare for 870 services in 2024, and Dr. Ohara accepts Medicare assignment.
Does Dr. Jun-Ichi Ohara offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ohara as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Jun-Ichi Ohara see?
CMS counts 128 Medicare patients who saw Dr. Ohara in 2024, with an average age of 77.
Is Dr. Jun-Ichi Ohara board certified?
Yes. Dr. Ohara is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Jun-Ichi Ohara bill to Medicare?
In 2024, Dr. Ohara's most billed Medicare services were office visit, established patient (99215), surgery: heart and blood vessels (36415) and office visit, established patient (99214).
Where did Dr. Jun-Ichi Ohara go to medical school?
Dr. Ohara graduated from Okayama Univ- Fac Med in 1975.
What drugs does Dr. Jun-Ichi Ohara prescribe most?
In 2024 Medicare Part D data, Dr. Ohara's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Pantoprazole Sodium.
Has Dr. Jun-Ichi Ohara received payments from drug or device companies?
CMS Open Payments shows $97 in general payments to Dr. Ohara from 2 companies from 2018 to 2024. The largest total came from GlaxoSmithKline, LLC.
How long has Dr. Jun-Ichi Ohara been practicing?
Dr. Ohara graduated from medical school in 1975, 51 years ago.
What insurance does Dr. Jun-Ichi Ohara accept?
Dr. Ohara is in network with 12 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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