Dr. Michael Seung Oh, MD
- Medicare services, 2016
- 14
- Medicare patients, 2024
- 17
- Part D claims, 2024
- 2,455
- Hospital affiliations
- 1
- Industry payments
- $626
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Oh's professional email, personal email and mobile number
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Dr. Michael Seung Oh is a neurologist in Fontana, California
Dr. Oh practices at Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
Dr. Oh's NPI, 1972763555, was assigned on June 16, 2008. Dr. Oh graduated from Medical College of Wisconsin in 2008. Dr. Oh holds California license A123554.
- NPI
- 1972763555NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6709029127
- NPI enumeration date
- June 16, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael Seung Oh practices at Fontana Medical Center in Fontana, California
Dr. Oh's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Source: Dmand AI Affiliation Data
Dr. Michael Seung Oh is affiliated with 2 sites of care and 1 medical group
Dr. Oh's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Oh to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael Seung Oh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oh practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael Seung Oh is one of 2,207 neurologists in California
Neurology is Dr. Oh's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Oh is licensed in California.
Specialties and state licenses
- Neurology, CaliforniaPrimary
Neurologists near Dr. Oh
Counts of neurologists 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. Michael Seung Oh billed Medicare for 14 services in 2016
CMS data shows 14 Medicare services from Dr. Oh across 1 procedure code in 2016, for 17 Medicare patients. Medicare paid $750 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Oh compared with the California median for neurologists, 2016
- Dr. Oh
- California median
- Medicare services
- 14vs 40497% below
- Medicare patients
- 17vs 19091% below
- Part D claims
- 2,243vs 3246.9 times
Medians across 1,995 neurologists in California with Dmand AI profiles that report each measure.
Dr. Oh's most billed Medicare procedure codes, 2016
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael Seung Oh treated 17 Medicare patients in 2024, average age 68
CMS counts 17 Medicare patients who saw Dr. Oh in 2024. 65% of them have high blood pressure, and 65% have high cholesterol. Their average risk score is 1.50, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Oh's median patient age at 52, with 67% women.
Chronic conditions among Dr. Oh's Medicare patients, 2024
- High blood pressure65%
- High cholesterol65%
Share of Medicare patients with each condition. A patient can have several.
Dr. Oh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 52
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael Seung Oh wrote 2,455 Medicare Part D claims in 2024
In 2024, Dr. Oh wrote 2,455 Medicare Part D claims for 488 patients. 95% of them were for generic drugs. CMS names the drug for 2,243 of them, across 50 drugs with 11 or more claims each, at $116,334 in total drug cost. In 2023, CMS named 2,255 claims across 54 drugs.
Dr. Oh's Part D claims by kind of drug, 2024
- Generic2,331 claims95%
- Brand-name111 claims5%
- Other13 claims1%
Dr. Oh'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. Oh's Part D claims, 2024
- Antipsychotics, patients 65 and over1%25 of 2,455 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: 2,2552024: 2,2431%
Drugs named by CMS: 50 in 2024, 54 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
How Dr. Michael Seung Oh takes part in Medicare
Dr. Oh accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Michael Seung Oh received $626 in industry payments from 2019 to 2025
CMS Open Payments shows 10 general payments to Dr. Oh from 7 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 91% of the total. Kuros Biosciences USA, Inc paid the most, $178.
General payments to Dr. Oh by program year, 2019 to 2025
General payments to Dr. Oh by kind, 2019 to 2025
- Food and beverage$57291%
- Travel and lodging$549%
Companies that paid Dr. Oh the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael Seung Oh graduated from Medical College of Wisconsin
Dr. Oh graduated from Medical College of Wisconsin in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael Seung Oh'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 DataDmand AI Org Hierarchy 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Michael Seung Oh
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. Michael Seung Oh's NPI number?
Dr. Michael Seung Oh's NPI number is 1972763555. It was assigned on June 16, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael Seung Oh?
Dr. Michael Seung Oh is a neurologist in Fontana, California. The primary specialty in the NPI Registry is Neurology Physician (taxonomy code 2084N0400X).
Where does Dr. Michael Seung Oh practice?
Dr. Oh practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Oh's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. Dmand AI also links Dr. Oh to 1 group practice or clinic.
What is Dr. Michael Seung Oh's office phone number?
The practice phone on file for Dr. Oh is (909) 427-5000.
What is Dr. Michael Seung Oh's medical license number?
Dr. Oh holds California license A123554.
Which hospitals is Dr. Michael Seung Oh affiliated with?
Dr. Oh practices at Fontana Medical Center in Fontana, California.
What medical group is Dr. Michael Seung Oh part of?
Dr. Oh is linked to Southern California Permanente Medical Group.
Does Dr. Michael Seung Oh accept Medicare?
Yes. CMS data shows Dr. Oh billed Medicare for 14 services in 2016, and Dr. Oh accepts Medicare assignment.
How many Medicare patients does Dr. Michael Seung Oh see?
CMS counts 17 Medicare patients who saw Dr. Oh in 2024, with an average age of 68.
What services does Dr. Michael Seung Oh bill to Medicare?
In 2016, Dr. Oh's most billed Medicare services were hospital inpatient care (99232).
Show 4 more questionsShow fewer questions
Where did Dr. Michael Seung Oh go to medical school?
Dr. Oh graduated from Medical College of Wisconsin in 2008.
What drugs does Dr. Michael Seung Oh prescribe most?
In 2024 Medicare Part D data, Dr. Oh's most prescribed drugs by claims were Gabapentin, Carbidopa-Levodopa and Levetiracetam.
Has Dr. Michael Seung Oh received payments from drug or device companies?
CMS Open Payments shows $626 in general payments to Dr. Oh from 7 companies from 2019 to 2025. The largest total came from Kuros Biosciences USA, Inc.
How long has Dr. Michael Seung Oh been practicing?
Dr. Oh graduated from medical school in 2008, 18 years ago.
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