2026 NPPES data Adult Reconstructive Orthopaedic Surgery Physician NPI 1629192240 M.D.
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Vincent Yamamoto, M.D.

Adult Reconstructive Orthopaedic Surgery Physician in Walnut Creek, California. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 1,245 in Adult Reconstructive Orthopaedic Surgery Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration — see our methodology.

Federal data — no proprietary rating. We show these CMS records as-is — no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
15
Medicare Part D claims · 11 beneficiaries · Adult Reconstructive Orthopaedic Surgery Physician avg: 493
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Vincent Yamamoto, M.D. filed 15 Medicare Part D claims in 2023 as a Adult Reconstructive Orthopaedic Surgery Physician in Walnut Creek, California.

15
Part D claims, 2023

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

Vincent Yamamoto, M.D.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

15 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

Vincent Yamamoto, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Vincent Yamamoto, M.D.?

Quality data not reported

NPI registry status

Active

Issued 03/19/2007

NPI 1629192240

Primary specialty

Adult Reconstructive Orthopaedic Surgery Physician

Niche

1,245 US NPIs in this specialty

Medicare Part D claims

15 97% vs specialty avg

2023 prescription claims

Specialty avg: 493

Specialty distribution in California

How Adult Reconstructive Orthopaedic Surgery Physician compares to other specialties among California providers

California providers

Largest specialties in California (% of in-state providers)

Behavior Technician — 17.3%Behavior Technician17.3%Marriage & Family Therapist — 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program — 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor — 3.9%Mental Health Counselor3.9%Pharmacist — 3.5%Pharmacist3.5%Clinical Social Worker — 3.1%Clinical Social Worker3.1%Adult Reconstructive Orthopaedic Surgery Physician — 0%Adult Reconstructive Orthopaedic Surgery Physician0%
Largest specialties in California (% of in-state providers)

Specialty board-certification context

Estimated specialty board-certified rate — Adult Reconstructive Orthopaedic Surgery Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Adult Reconstructive Orthopaedic Surgery Physician ABMS/AOA estimate

Est. board-certified rate (Adult Reconstructive Orthopaedic Surgery Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Adult Reconstructive Orthopaedic Surgery Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

Vincent Yamamoto, M.D. appears in the CMS NPPES registry as a Adult Reconstructive Orthopaedic Surgery Physician provider holding M.D. credentials at 1425 S MAIN ST, Walnut Creek, CA, 94596, with a listed phone of (925) 295-4000. NPI 1629192240 was issued on 03/19/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Yamamoto most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 15 prescription claims written by this provider, covering 11 Medicare beneficiaries and totaling roughly $147 in drug spend. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Adult Reconstructive Orthopaedic Surgery Physician is a narrow specialty nationwide, with 1,245 enrolled providers across 51 states and an average of 493 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1425 S MAIN ST
Walnut Creek, CA 94596

Provider Details

NPI 1629192240
Specialty Adult Reconstructive Orthopaedic Surgery Physician
Credentials M.D.
Gender Male
NPI Issued 03/19/2007

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to Vincent Yamamoto, M.D.. To verify Vincent Yamamoto, M.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

15
Total Claims
$147
Total Drug Cost
11
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15
Total Day Supply
189
Brand Drug Cost
$0
Generic Drug Cost
$147
Antibiotic Claims
12

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
0.80
Age Distribution
<65: 0, 65-74: N/A, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Amoxicillin
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Adult Reconstructive Orthopaedic Surgery Physician Overview

How Vincent Yamamoto, M.D. fits within the Adult Reconstructive Orthopaedic Surgery Physician landscape nationally.

1,245
Adult Reconstructive Orthopaedic Surgery Physician Providers in US
51
States with Adult Reconstructive Orthopaedic Surgery Physician
493
Avg Claims per Provider

Vincent Yamamoto, M.D.'s 15 claims are below the specialty average of 493.

Nearby Adult Reconstructive Orthopaedic Surgery Physician Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Yamamoto.

Compare Adult Reconstructive Orthopaedic Surgery Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Adult Reconstructive Orthopaedic Surgery Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Vincent Yamamoto, M.D.'s specialty?
Vincent Yamamoto, M.D. specializes in Adult Reconstructive Orthopaedic Surgery Physician and practices in Walnut Creek, California. Credentials: M.D..
How much does Vincent Yamamoto, M.D. prescribe under Medicare Part D?
In 2023, Vincent Yamamoto, M.D. wrote 15 Medicare Part D claims totaling $147 in drug costs for 11 beneficiaries.
Where is Vincent Yamamoto, M.D. located?
Vincent Yamamoto, M.D. is located at 1425 S MAIN ST, Walnut Creek, CA, 94596. Phone: (925) 295-4000.
What is Vincent Yamamoto, M.D.'s NPI number?
Vincent Yamamoto, M.D.'s National Provider Identifier (NPI) is 1629192240, issued on 03/19/2007.
How many Adult Reconstructive Orthopaedic Surgery Physician providers are there in the US?
There are 1,245 Adult Reconstructive Orthopaedic Surgery Physician providers across 51 states in the US. The average Adult Reconstructive Orthopaedic Surgery Physician provider writes 493 Medicare Part D claims per year.
What drugs does Vincent Yamamoto, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Vincent Yamamoto, M.D.'s most frequently prescribed drugs include Amoxicillin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Vincent Yamamoto, M.D. accept Medicare?
Vincent Yamamoto, M.D. appears in CMS Medicare data with 15 Part D claims and 11 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Vincent Yamamoto, M.D.'s credentials?
Vincent Yamamoto, M.D.'s NPI is 1629192240 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology

Compiled from official public sources by the PlainDoctor editorial team.