2026 NPPES data General Practice Dentistry NPI 1669542502 DDS
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DAVID BUCHAN, DDS

General Practice Dentistry in SAN CLEMENTE, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
72
Medicare Part D claims · 33 beneficiaries · General Practice Dentistry avg: 82

What the federal data shows

DAVID BUCHAN, DDS filed 72 Medicare Part D claims in 2023 as a General Practice Dentistry in SAN CLEMENTE, California.

72
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.

DAVID BUCHAN, DDS's Medicare Part D volume vs every U.S. prescriber

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

72 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

What does the federal data show about DAVID BUCHAN, DDS?

Quality data not reported

NPI registry status

Active

Issued 11/08/2006

NPI 1669542502

Primary specialty

General Practice Dentistry

High-volume

121,627 US NPIs in this specialty

Medicare Part D claims

72 12% vs specialty avg

2023 prescription claims

Specialty avg: 82

Specialty distribution in California

How General Practice Dentistry compares to other specialties among California providers

California providers

General Practice Dentistry share within California

1. General Practice Dentistry42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
General Practice Dentistry share within California

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Dentistry (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
General Practice Dentistry ABMS/AOA estimate

Est. board-certified rate (General Practice Dentistry) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (General Practice Dentistry) — 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).

DAVID BUCHAN, DDS appears in the CMS NPPES registry as a General Practice Dentistry provider holding DDS credentials at 657 CAMINO DE LOS MARES STE 132, SAN CLEMENTE, CA, 92673, with a listed phone of (949) 496-1221. NPI 1669542502 was issued on 11/08/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BUCHAN 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 72 prescription claims written by this provider, covering 33 Medicare beneficiaries and totaling roughly $364 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.

General Practice Dentistry is a high-volume specialty nationwide, with 121,627 enrolled providers across 56 states and an average of 82 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

657 CAMINO DE LOS MARES STE 132
SAN CLEMENTE, CA 92673

Provider Details

NPI 1669542502
Specialty General Practice Dentistry
Credentials DDS
Gender Male
NPI Issued 11/08/2006

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 DAVID BUCHAN, DDS. To verify DAVID BUCHAN, DDS'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.

72
Total Claims
$364
Total Drug Cost
33
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
76
Total Day Supply
672
Brand Drug Cost
$0
Generic Drug Cost
$364
Antibiotic Claims
43

Patient Demographics

Average Patient Age
76.8 years
Avg HCC Risk Score
1.35
Gender Split
52% female / 48% male

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
30
Ibuprofen
16

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

General Practice Dentistry Overview

How DAVID BUCHAN, DDS fits within the General Practice Dentistry landscape nationally.

121,627
General Practice Dentistry Providers in US
56
States with General Practice Dentistry
82
Avg Claims per Provider

DAVID BUCHAN, DDS's 72 claims are below the specialty average of 82.

Nearby General Practice Dentistry Providers in California

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

Compare General Practice Dentistry nationally: see state-by-state distribution →

Frequently Asked Questions

What is DAVID BUCHAN, DDS's specialty?
DAVID BUCHAN, DDS specializes in General Practice Dentistry and practices in SAN CLEMENTE, California. Credentials: DDS.
How much does DAVID BUCHAN, DDS prescribe under Medicare Part D?
In 2023, DAVID BUCHAN, DDS wrote 72 Medicare Part D claims totaling $364 in drug costs for 33 beneficiaries.
Where is DAVID BUCHAN, DDS located?
DAVID BUCHAN, DDS is located at 657 CAMINO DE LOS MARES STE 132, SAN CLEMENTE, CA, 92673. Phone: (949) 496-1221.
What is DAVID BUCHAN, DDS's NPI number?
DAVID BUCHAN, DDS's National Provider Identifier (NPI) is 1669542502, issued on 11/08/2006.
How many General Practice Dentistry providers are there in the US?
There are 121,627 General Practice Dentistry providers across 56 states in the US. The average General Practice Dentistry provider writes 82 Medicare Part D claims per year.
What drugs does DAVID BUCHAN, DDS prescribe most often?
Based on 2023 Medicare Part D data, DAVID BUCHAN, DDS's most frequently prescribed drugs include Amoxicillin, Ibuprofen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID BUCHAN, DDS accept Medicare?
DAVID BUCHAN, DDS appears in CMS Medicare data with 72 Part D claims and 33 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID BUCHAN, DDS's credentials?
DAVID BUCHAN, DDS's NPI is 1669542502 with credentials DDS. 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