Maki Yamamoto, MD
Surgery Physician · Orange, CA
Maki Yamamoto, MD is a surgery physician with a practice address in Orange, California, and NPI 1336328194, issued on Oct 29, 2007. Check the license (California A95898, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Maki Yamamoto
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- A95898 CA
ME110286 FL
Self-reported in NPPES; status is on the state search - Practice location
- 333 City Blvd W, Orange, CA 92868
- Phone
- (714) 456-6847
- Enumerated
- Oct 29, 2007
- Record last updated
- Nov 17, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (714) 456-3967
- Medicare enrollment
- Enrolled (PECOS I20140820002675); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2004
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 333 City Blvd W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christopher Armstrong, M.D.Surgery Physician1912260035
- Andrew Barleben, M.D., M.P.H.Surgery Physician1497936900
- Dana BergerMaternal & Fetal Medicine Physician1497287387
- Raymond Chou, M.D.Student in an Organized Health Care Education/Training Program1013449651
- Hugh ChungSurgery Physician1639309156
Verify Maki Yamamoto in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A95898Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
50% fewer Medicare Part D claims than the average surgery physician in 2024
74 Medicare Part D claims for 63 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 48 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen24 claims
- Tramadol Hcl22 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 MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University Surgeons OF Orange A Medical GroupOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maki Yamamoto among 3,118 surgery physician records in California
Maki Yamamoto, MD is one of 3,118 surgery physician records with a practice address in California. 75% 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 45% of them.
- NPI issued2007 · 45% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2004 · median 2003 among the 1,901 with a school on file
- Record last updated2014 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Orange → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Jeffrey Chao, MDOrange, CA 928681164515995
- Kim Charney, M.D.Orange, CA 928681699790899
- Hisham El-Bayar, M.D., F.A.C.S.Orange, CA 928681659376622
- Sami Hamamji, M.D.Orange, CA 928681457425282
- Jay Harness, M.D.Orange, CA 928681477549426
- David K Imagawa, MDOrange, CA 928681467532630
- Rajesh Khanijou, M.D.Orange, CA 928681548239098
- Eric Kuncir, M.D.Orange, CA 928681053382085
Common questions
What is Maki Yamamoto, MD's NPI number?
Maki Yamamoto, MD's National Provider Identifier (NPI) is 1336328194, issued on Oct 29, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Maki Yamamoto, MD located?
The NPPES record lists a practice address at 333 City Blvd W, Orange, CA, 92868. Phone: (714) 456-6847. Providers update this record themselves, so call before visiting.
How can I verify Maki Yamamoto, MD's license?
NPPES lists California license number A95898, 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 Maki Yamamoto, MD prescribe under Medicare Part D?
In 2024, Maki Yamamoto, MD had 74 Medicare Part D claims for 63 beneficiaries; the average among surgery physician prescribers was 147. Part D covers Medicare prescriptions only.
What is Maki Yamamoto, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100. 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.