2026 NPPES data General Practice Dentistry NPI 1336174135 DDS
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JOHN ARMBRUSTER, DDS

General Practice Dentistry in WOODRUFF, South Carolina. 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
130
Medicare Part D claims · 87 beneficiaries · General Practice Dentistry avg: 82
What the federal data reveals: JOHN ARMBRUSTER, DDS is a General Practice Dentistry ([object Object]) practicing in WOODRUFF, South Carolina with a Medicare Part D prescribing footprint of 130 claims across 87 beneficiaries .

What stands out: JOHN ARMBRUSTER, DDS filed 130 Medicare Part D claims in 2023 across WOODRUFF, South Carolina. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

JOHN ARMBRUSTER, DDS at a glance

Quality data not reported

NPI registry status

Active

Issued 07/11/2006

NPI 1336174135

Primary specialty

General Practice Dentistry

High-volume

121,627 US NPIs in this specialty

Medicare Part D claims

130 59% vs specialty avg

2023 prescription claims

Specialty avg: 82

Specialty distribution in South Carolina

How General Practice Dentistry compares to other specialties among South Carolina providers

South Carolina providers

General Practice Dentistry share within South Carolina

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

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).

JOHN ARMBRUSTER, DDS is a General Practice Dentistry provider practicing in WOODRUFF, South Carolina, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DDS. NPI: 1336174135. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JOHN ARMBRUSTER, DDS appears in the CMS NPPES registry as a General Practice Dentistry provider holding DDS credentials at 601 E. GEORGIA STREET, WOODRUFF, SC, 29388, with a listed phone of (864) 476-8315. NPI 1336174135 was issued on 07/11/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARMBRUSTER 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 130 prescription claims written by this provider, covering 87 Medicare beneficiaries and totaling roughly $2K in drug spend, with an opioid prescribing rate of 10.0%. 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

601 E. GEORGIA STREET
WOODRUFF, SC 29388

Provider Details

NPI 1336174135
Specialty General Practice Dentistry
Credentials DDS
Gender Male
NPI Issued 07/11/2006

Medicare Part D Prescribing Data

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

130
Total Claims
$2K
Total Drug Cost
87
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
136
Total Day Supply
1,548
Generic Drug Cost
$2K
Opioid Claims
13 (10.0% rate)
Antibiotic Claims
87

Patient Demographics

Average Patient Age
73.8 years
Avg HCC Risk Score
1.19
Gender Split
53% female / 47% 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
67
Cephalexin
17

* 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 JOHN ARMBRUSTER, 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

JOHN ARMBRUSTER, DDS's 130 claims are above the specialty average of 82.

Nearby General Practice Dentistry Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as ARMBRUSTER.

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

Frequently Asked Questions

What is JOHN ARMBRUSTER, DDS's specialty?
JOHN ARMBRUSTER, DDS specializes in General Practice Dentistry and practices in WOODRUFF, South Carolina. Credentials: DDS.
How much does JOHN ARMBRUSTER, DDS prescribe under Medicare Part D?
In 2023, JOHN ARMBRUSTER, DDS wrote 130 Medicare Part D claims totaling $2K in drug costs for 87 beneficiaries.
Where is JOHN ARMBRUSTER, DDS located?
JOHN ARMBRUSTER, DDS is located at 601 E. GEORGIA STREET, WOODRUFF, SC, 29388. Phone: (864) 476-8315.
What is JOHN ARMBRUSTER, DDS's NPI number?
JOHN ARMBRUSTER, DDS's National Provider Identifier (NPI) is 1336174135, issued on 07/11/2006.
Does JOHN ARMBRUSTER, DDS prescribe opioids?
Yes, JOHN ARMBRUSTER, DDS had 13 opioid claims in 2023 with an opioid prescribing rate of 10.0%.
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 JOHN ARMBRUSTER, DDS prescribe most often?
Based on 2023 Medicare Part D data, JOHN ARMBRUSTER, DDS's most frequently prescribed drugs include Amoxicillin, Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN ARMBRUSTER, DDS accept Medicare?
JOHN ARMBRUSTER, DDS appears in CMS Medicare data with 130 Part D claims and 87 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN ARMBRUSTER, DDS's credentials?
JOHN ARMBRUSTER, DDS's NPI is 1336174135 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