Cameron Isao Oba, M.D.
Internal Medicine Physician · San Jose, CA
Cameron Isao Oba, M.D. is an internal medicine physician with a practice address in San Jose, California, and NPI 1851357917, issued on Apr 25, 2006. Check the license (California A68975, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cameron Isao Oba
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A68975 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2410 Samaritan Dr, San Jose, CA 95124
- Phone
- (408) 371-9010
- Enumerated
- Apr 25, 2006
- Record last updated
- Apr 22, 2024
- Fax
- (408) 371-2633
- Medicare enrollment
- Enrolled (PECOS I20080725000235); accepts Medicare assignment
- Medical or professional school
- New York University Medical College - Nlg, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 2410 Samaritan Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Cameron Isao Oba in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A68975Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average internal medicine physician in 2024
7,849 Medicare Part D claims for 859 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 443 claims were for opioids.
Most prescribed
- Atorvastatin Calcium480 claims
- Amlodipine Besylate309 claims
- Losartan Potassium267 claims
- Levothyroxine Sodium249 claims
- Lisinopril235 claims
- Hydrocodone-Acetaminophen227 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.
Industry payments in 2024: $28.48
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- University Healthcare AllianceMenlo Park, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cameron Isao Oba among 17,696 internal medicine physician records in California
Cameron Isao Oba, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1997 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
428 internal medicine physician records list a practice address in San Jose
They are 428 of the 20,925 NPPES records with a practice address in San Jose, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Jose → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Rekha Dharmaji, M.DSan Jose, CA 951241437211588
- Sunitha Gubbala, M.D.San Jose, CA 951241992761118
- Shabnam Husain, M.D.San Jose, CA 951241609987577
- Shahe Komshian, M.D.San Jose, CA 951241902917883
- Denise Massey, MDSan Jose, CA 951241487719118
Common questions
What is Cameron Isao Oba, M.D.'s NPI number?
Cameron Isao Oba, M.D.'s National Provider Identifier (NPI) is 1851357917, issued on Apr 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Cameron Isao Oba, M.D. located?
The NPPES record lists a practice address at 2410 Samaritan Dr, San Jose, CA, 95124. Phone: (408) 371-9010. Providers update this record themselves, so call before visiting.
How can I verify Cameron Isao Oba, M.D.'s license?
NPPES lists California license number A68975, 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 Cameron Isao Oba, M.D. prescribe under Medicare Part D?
In 2024, Cameron Isao Oba, M.D. had 7,849 Medicare Part D claims for 859 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.