Masaki Oishi, MD
Neurological Surgery Physician · Houston, TX
Masaki Oishi, MD is a neurological surgery physician with a practice address in Houston, Texas, and NPI 1962497222, issued on Sep 13, 2005. Check the license (Texas L6133, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Masaki Oishi
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- L6133 TX
Self-reported in NPPES; status is on the state search - Practice location
- 12121 Richmond Avenue, Houston, TX 77082
- Phone
- (281) 870-9292
- Enumerated
- Sep 13, 2005
- Record last updated
- May 30, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (281) 870-8493
- Medicaid ID
- 166350201 TX
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 669 in Texas → Look up another NPI →
Also registered at 12121 Richmond Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Francesco Cavallo, MDDiagnostic Radiology Physician1992745814
Verify Masaki Oishi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L6133Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average neurological surgery physician in 2024
16 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.
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.
Masaki Oishi among 669 neurological surgery physician records in Texas
Masaki Oishi, MD is one of 669 neurological surgery physician records with a practice address in Texas. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 88% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2014 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in Texas
There are 669 neurological surgery physician records in Texas.
All 669 in Texas → Every provider in Houston → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Homero Anchondo, MD PAHouston, TX 770821649261355
- Neda Jafari, DOHouston, TX 770821346452018
- Gary Kraus, MDHouston, TX 770821881782084
- Patrick Shih, M.D.Houston, TX 770821255652301
- Peter Yeh, M.D.Houston, TX 770811457415754
- Dani Bidros, M.D.Houston, TX 770841548430754
- Joseph Hsieh, MDHouston, TX 770891699901959
- Matthew Mullarkey, MDHouston, TX 770891790213114
Common questions
What is Masaki Oishi, MD's NPI number?
Masaki Oishi, MD's National Provider Identifier (NPI) is 1962497222, issued on Sep 13, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Masaki Oishi, MD located?
The NPPES record lists a practice address at 12121 Richmond Avenue, Houston, TX, 77082. Phone: (281) 870-9292. Providers update this record themselves, so call before visiting.
How can I verify Masaki Oishi, MD's license?
NPPES lists Texas license number L6133, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Masaki Oishi, MD prescribe under Medicare Part D?
In 2024, Masaki Oishi, MD had 16 Medicare Part D claims for 14 beneficiaries; the average among neurological surgery physician prescribers was 172. 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.