Kuo S. Ooi, M.D.
Internal Medicine Physician · Rocklin, CA
Kuo S. Ooi, M.D. is an internal medicine physician with a practice address in Rocklin, California, and NPI 1598775421, issued on Aug 9, 2006. Check the license (California A96680, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Kuo S. Ooi
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A96680 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3104 Sunset Blvd Ste 2B, Rocklin, CA 95677
- Phone
- (916) 624-0300
- Enumerated
- Aug 9, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (916) 624-0631
- Medicare enrollment
- Enrolled (PECOS I20070402000317); accepts Medicare assignment
- 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 3104 Sunset Blvd Ste 2B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Julie Castner, PAPhysician Assistant1508357435
- Biljinder Chima, M.D.Sports Medicine (Family Medicine) Physician1205084910
- Saie Yoin ChoiSports Medicine (Family Medicine) Physician1073116356
- Michelle Thuy VI Do, MDFamily Medicine Physician1922680537
- Camille Fletchall, PA-CMedical Physician Assistant1790603538
- Michelle GeertsPhysician Assistant1396415188
Verify Kuo S. Ooi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A96680Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
29% more Medicare Part D claims than the average internal medicine physician in 2024
4,109 Medicare Part D claims for 310 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 92 claims were for opioids.
Most prescribed
- Atorvastatin Calcium347 claims
- Amlodipine Besylate189 claims
- Losartan Potassium168 claims
- Levothyroxine Sodium142 claims
- Rosuvastatin Calcium103 claims
- Lisinopril89 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: $2,333.94
130 payments; by number, the most common kind was 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
- Rocklin Family Practice And Sports MedicineRocklin, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kuo S. Ooi among 17,696 internal medicine physician records in California
Kuo S. Ooi, 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
- Graduated2001 · median 2004 among the 11,065 with a school on file
- Record last updated2023 · 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).
10 internal medicine physician records list a practice address in Rocklin
They are 10 of the 1,575 NPPES records with a practice address in Rocklin, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Rocklin → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mehak GulatiRocklin, CA 956771578056958
- Pamela Mercado, D.O.Rocklin, CA 956771255595351
- David Patella, M.D.Rocklin, CA 956771952331720
- Thomas Stafford, M.D.Rocklin, CA 956771043511868
- Chi Van Hoozen, M.D.Rocklin, CA 956771922119965
- Rosario Corazon Florante, MDRoseville, CA 956781356847024
- Parvez Islam, MDRoseville, CA 956781477631109
- Genevieve Logie, MDRoseville, CA 956781215909437
Common questions
What is Kuo S. Ooi, M.D.'s NPI number?
Kuo S. Ooi, M.D.'s National Provider Identifier (NPI) is 1598775421, issued on Aug 9, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Kuo S. Ooi, M.D. located?
The NPPES record lists a practice address at 3104 Sunset Blvd Ste 2B, Rocklin, CA, 95677. Phone: (916) 624-0300. Providers update this record themselves, so call before visiting.
How can I verify Kuo S. Ooi, M.D.'s license?
NPPES lists California license number A96680, 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 Kuo S. Ooi, M.D. prescribe under Medicare Part D?
In 2024, Kuo S. Ooi, M.D. had 4,109 Medicare Part D claims for 310 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.