Nathan Oh, D.O.
Neurological Surgery Physician · Ventura, CA
Nathan Oh, D.O. is a neurological surgery physician with a practice address in Ventura, California, and NPI 1992115778, issued on May 2, 2014. Check the license (California 20A14440, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nathan Oh
- Credential
- D.O.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- 20A14440 CA
Self-reported in NPPES; status is on the state search - Practice location
- 300 Hillmont Ave Ste 401, Ventura, CA 93003
- Phone
- (805) 648-9830
- Enumerated
- May 2, 2014
- Record last updated
- Jul 17, 2023
- Fax
- (805) 648-9833
- Medicare enrollment
- Enrolled (PECOS I20210907002319); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 300 Hillmont Ave Ste 401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Duncan, DOSurgery Physician1316097439
- Hailey Eisner, D.O.Urology Physician1154771285
- Xin Guan, MDObstetrics & Gynecology Physician1902269434
- Teresa Hong, NPFamily Nurse Practitioner1013251396
- Kenneth Leong, MDPlastic Surgery Physician1366519266
- Nissar Shah, M.DEndocrinology, Diabetes & Metabolism Physician1407078215
Verify Nathan Oh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14440Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average neurological surgery physician in 2024
26 Medicare Part D claims for 14 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $86.64
2 payments; by number, the most common kind was food and beverage; the largest payer was Highridge Medical LLC. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- County OF VenturaSimi Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
Other neurological surgery physician records in California
- Mohamad Abbass, MDStanford, CA1679492151
- Samy Abdou, MDSan Diego, CA1215085006
- Kumar Abhinav, BSC MBBS, FRCS(SN)Stanford, CA1003331000
- Moustapha Abou-Samra, MDVentura, CA1194719807
- Bret Abshire, M.D.Murrieta, CA1992741912
- Deyaaldeen Abu Reesh, MDPalo Alto, CA1073201521
- Imad Abumeri, M.D.Bakersfield, CA1295732980
- Achal Achrol, M.D.Loma Linda, CA1275783276
- Geoffrey Adey, MDWalnut Creek, CA1447362520
- John Adler, MDStanford, CA1780736199
Common questions
What is Nathan Oh, D.O.'s NPI number?
Nathan Oh, D.O.'s National Provider Identifier (NPI) is 1992115778, issued on May 2, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Oh, D.O. located?
The NPPES record lists a practice address at 300 Hillmont Ave Ste 401, Ventura, CA, 93003. Phone: (805) 648-9830. Providers update this record themselves, so call before visiting.
How can I verify Nathan Oh, D.O.'s license?
NPPES lists California license number 20A14440, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathan Oh, D.O. prescribe under Medicare Part D?
In 2024, Nathan Oh, D.O. had 26 Medicare Part D claims for 14 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is Nathan Oh, D.O.'s MIPS final score?
The 2023 MIPS final score is 87.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.