Mark Morishige, MD
Orthopaedic Surgery Physician · Los Altos, CA
Mark Morishige, MD is an orthopaedic surgery physician with a practice address in Los Altos, California, and NPI 1619197639, issued on May 1, 2007. Check the license (California C171216, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Morishige
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- C171216 CA
38793 IA
64840 MN
Self-reported in NPPES; status is on the state search - Practice location
- 763 Altos Oaks Dr Ste 2, Los Altos, CA 94024
- Phone
- (408) 356-0444
- Enumerated
- May 1, 2007
- Record last updated
- Mar 29, 2023
- Fax
- (408) 358-5125
- Medicare enrollment
- Enrolled (PECOS I20210324001464); may accept Medicare assignment
- Medical or professional school
- University Of Chicago, Pritzker School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 763 Altos Oaks Dr Ste 2
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelly Kliman, LMFTMarriage & Family Therapist1154021590
Verify Mark Morishige in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C171216Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
139 Medicare Part D claims for 83 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 18 claims were for opioids.
Most prescribed
- Meloxicam105 claims
- Oxycodone-Acetaminophen12 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: $55.21
1 payment: food and beverage; the largest payer was Smith+Nephew, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 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
- Advanced Surgical AssociatesSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Morishige among 2,276 orthopaedic surgery physician records in California
Mark Morishige, MD is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 54% of them.
- NPI issued2007 · 54% of these records are older, 35% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2003 · median 2003 among the 1,347 with a school on file
- Record last updated2023 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Los Altos → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Jeffrey Kliman, M.D.Los Altos, CA 940241083725659
- John Parker, M.D.Los Altos, CA 940241407937519
- William Irving, M.D.Los Altos Hills, CA 940221033224134
- John Costouros, MDMenlo Park, CA 940271437238565
- Victoria Barber, MDDaly City, CA 940151962418533
- Yeukkei Cheung, M.D.Daly City, CA 940151912148438
- Stephen Conrad, MDDaly City, CA 940151588670186
- Alfredo Fernandez, MDDaly City, CA 940151871509471
Common questions
What is Mark Morishige, MD's NPI number?
Mark Morishige, MD's National Provider Identifier (NPI) is 1619197639, issued on May 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Morishige, MD located?
The NPPES record lists a practice address at 763 Altos Oaks Dr Ste 2, Los Altos, CA, 94024. Phone: (408) 356-0444. Providers update this record themselves, so call before visiting.
How can I verify Mark Morishige, MD's license?
NPPES lists California license number C171216, 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 Mark Morishige, MD prescribe under Medicare Part D?
In 2024, Mark Morishige, MD had 139 Medicare Part D claims for 83 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.