Dr. Nathan S. Oh, DO
- Medicare services, 2024
- 223
- Medicare patients, 2024
- 173
- Part D claims, 2024
- 26
- Publications
- 12
- MIPS score, 2024
- 86
- Practice address
- 300 Hillmont Avenue, Ventura, CA 93003
- Practice phone
- Call (805) 652-6075
- 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
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. Nathan S. Oh is a neurosurgeon in Ventura, California
Dr. Oh practices at Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency.
Dr. Oh's NPI, 1992115778, was assigned on May 2, 2014. Dr. Oh graduated from Arizona School of Dentistry and Oral Health - Mesa in 2014. Dr. Oh holds California license 20A14440.
- NPI
- 1992115778NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3971875246
- NPI enumeration date
- May 2, 2014
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (805) 652-6075
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 38
- Medical school graduation
- 2014
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nathan S. Oh practices at Ventura County Medical Center in Ventura, California
Dr. Oh's primary practice is Ventura County Medical Center, at 300 Hillmont Avenue, Ventura, CA 93003 in Ventura County. The practice phone is (805) 652-6075.
- Ventura County Medical Center300 Hillmont Avenue, Ventura, CA 93003 · Ventura CountyPhone(805) 652-6075
Source: Dmand AI Affiliation Data
Dr. Nathan S. Oh is affiliated with 4 sites of care and 1 medical group
Dr. Oh's primary practice is Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency. Dr. Oh is also affiliated with Community Memorial Hospital - Ventura. The medical group on file is Ventura County Medical Center. Dmand AI also links Dr. Oh to 1 more community health center and 1 therapy and rehab clinic, each named with a free account. Dr. Oh's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nathan S. Oh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Oh practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ventura County Medical Center | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Ventura County Health Care Agency and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nathan S. Oh is one of 846 neurosurgeons in California
Neurological surgery is Dr. Oh's primary specialty in the NPI Registry, under taxonomy code 207T00000X. Dr. Oh is board certified in 2015 - 2027 by the CA State License. Dr. Oh is licensed in California.
Specialties and state licenses
- Neurological surgery, CaliforniaPrimary
Clinical focus
Dmand AI lists back and neck pain treatment without fusion, craniotomy, lower back pain, neck pain and spine problems, spinal fusion and thoracic spine disorders among the conditions Dr. Oh treats.
Neurosurgeons near Dr. Oh
Counts of neurosurgeons 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. Nathan S. Oh billed Medicare for 223 services in 2024
CMS data shows 223 Medicare services from Dr. Oh across 4 procedure codes in 2024, for 173 Medicare patients. Medicare paid $19,868 for them.
Where Dr. Oh's Medicare services took place, 2024
- In an office3315%
- In a facility19085%
Dr. Oh compared with the California median for neurosurgeons, 2024
- Dr. Oh
- California median
- Medicare services
- 223vs 216Close to median
- Medicare patients
- 173vs 15412% above
Medians across 679 neurosurgeons in California with Dmand AI profiles that report each measure.
Dr. Oh'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.
Need commercial claims for Dr. Oh?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Oh and other neurosurgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathan S. Oh treated 173 Medicare patients in 2024, average age 72
CMS counts 173 Medicare patients who saw Dr. Oh in 2024. The largest group is 65 to 74, with 70 patients. 75% of them have high blood pressure, and 73% have high cholesterol. 62% are also on Medicaid. Their average risk score is 1.96, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Oh's median patient age at 63, with 56% women.
Dr. Oh's Medicare patients by age, 2024
Dr. Oh's Medicare patients by sex, 2024
- Women9555%
- Men7845%
Chronic conditions among Dr. Oh's Medicare patients, 2024
- High blood pressure75%
- High cholesterol73%
- Arthritis71%
- Diabetes46%
- Mood disorders43%
- Depression38%
- Anxiety33%
- Stroke or TIA32%
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 63
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan S. Oh wrote 26 Medicare Part D claims in 2024
In 2024, Dr. Oh wrote 26 Medicare Part D claims for 14 patients. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Nathan S. Oh scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Oh for performance year 2024, reported as part of a group. Dr. Oh accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Oh as offering telehealth. CMS counts 78 procedures of laminectomy or laminotomy (partial removal of spine bones) by Dr. Oh, more than 89% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Oh's MIPS scores, performance year 2024
- 86of 100Final score
- 64.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 72of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Oh ranks in Medicare procedure volume
- Spinal fusion
- 85th percentile160 procedures
- Laminectomy or laminotomy (partial removal of spine bones)
- 89th percentile78 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Nathan S. Oh has 12 publications on record
Dmand AI links 12 papers to Dr. Oh, published from 2015 to 2018. Dr. Oh's most frequent co-authors are Daniela Annenelie Bota, MD, Ruslana Maria Cannell, MD and Ryan M. Casserly, MD.
Dr. Oh's most frequent co-authors
- Daniela Annenelie Bota, MD1 shared paper
- Ruslana Maria Cannell, MD1 shared paper
- Ryan M. Casserly, MD1 shared paper
Recent publications by Dr. Oh
See who Dr. Oh researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Oh works with, so you can find a warm path to the right neurosurgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Nathan S. Oh received $1,647 in industry payments from 2024 to 2025
CMS Open Payments shows 6 general payments to Dr. Oh from 6 drug and device companies from 2024 to 2025. Honoraria make up the largest share, 91% of the total. Brainlab, Inc. paid the most, $1,500.
General payments to Dr. Oh by program year, 2024 to 2025
General payments to Dr. Oh by kind, 2024 to 2025
- Honoraria$1,50091%
- Food and beverage$1479%
Companies that paid Dr. Oh the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathan S. Oh graduated from Arizona School of Dentistry and Oral Health - Mesa
Dr. Oh graduated from Arizona School of Dentistry and Oral Health - Mesa in 2014. Dr. Oh is a member of AANS and CNS.
- Medical school
- Board certified in 2015 - 2027
Source: Dmand AI Professional Profile Data
Dr. Nathan S. Oh accepts plans from 8 insurance carriers
Dr. Oh is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- Humana
Plan types Dr. Oh accepts, by number of carriers
- Medicare6
- PPO6
- HMO4
- POS3
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Nathan S. 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 (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)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Nathan S. 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. Nathan S. Oh's NPI number?
Dr. Nathan S. Oh's NPI number is 1992115778. It was assigned on May 2, 2014, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan S. Oh?
Dr. Nathan S. Oh is a neurosurgeon in Ventura, California. The primary specialty in the NPI Registry is Neurological Surgery Physician (taxonomy code 207T00000X).
Where does Dr. Nathan S. Oh practice?
Dr. Oh practices at 300 Hillmont Avenue, Ventura, CA 93003. Dr. Oh's primary practice is Ventura County Medical Center in Ventura, California, part of Ventura County Health Care Agency. Dmand AI also links Dr. Oh to 1 community health center and 1 therapy and rehab clinic.
What is Dr. Nathan S. Oh's office phone number?
The practice phone on file for Dr. Oh is (805) 652-6075.
What is Dr. Nathan S. Oh's medical license number?
Dr. Oh holds California license 20A14440.
Which hospitals is Dr. Nathan S. Oh affiliated with?
Dr. Oh practices at Ventura County Medical Center in Ventura, California. Dr. Oh is also affiliated with Community Memorial Hospital - Ventura.
What medical group is Dr. Nathan S. Oh part of?
Dr. Oh is linked to Ventura County Medical Center.
Does Dr. Nathan S. Oh accept Medicare?
Yes. CMS data shows Dr. Oh billed Medicare for 223 services in 2024, and Dr. Oh accepts Medicare assignment.
Does Dr. Nathan S. Oh offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Oh as offering telehealth services.
What is Dr. Nathan S. Oh's MIPS score?
Dr. Oh's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
Show 9 more questionsShow fewer questions
How many Medicare patients does Dr. Nathan S. Oh see?
CMS counts 173 Medicare patients who saw Dr. Oh in 2024, with an average age of 72.
Is Dr. Nathan S. Oh board certified?
Yes. Dr. Oh is board certified in 2015 - 2027 by the CA State License.
What services does Dr. Nathan S. Oh bill to Medicare?
In 2024, Dr. Oh's most billed Medicare services were office visit, established patient (99214), office visit, new patient (99204) and hospital inpatient care (99223).
Where did Dr. Nathan S. Oh go to medical school?
Dr. Oh graduated from Arizona School of Dentistry and Oral Health - Mesa in 2014.
Has Dr. Nathan S. Oh received payments from drug or device companies?
CMS Open Payments shows $1,647 in general payments to Dr. Oh from 6 companies from 2024 to 2025. The largest total came from Brainlab, Inc.
How long has Dr. Nathan S. Oh been practicing?
Dr. Oh graduated from medical school in 2014, 12 years ago.
Does Dr. Nathan S. Oh do research?
Dmand AI links 12 publications to Dr. Oh, published from 2015 to 2018.
Who does Dr. Nathan S. Oh publish with?
Dr. Oh's most frequent co-authors are Daniela Annenelie Bota, MD (1 shared paper), Ruslana Maria Cannell, MD (1 shared paper) and Ryan M. Casserly, MD (1 shared paper).
What insurance does Dr. Nathan S. Oh accept?
Dr. Oh is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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