NPI registry status
Active
2026 NPPES data General Practice Dentistry NPI 1639307184 D.D.S.
Verify on CMS → Chad Wassink, D.D.S.
General Practice Dentistry in Guthrie, Oklahoma.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 123,581 in General Practice Dentistry, 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
27
Medicare Part D claims · 19 beneficiaries · General Practice Dentistry avg: 84
What the federal data shows
Chad Wassink, D.D.S. filed 27 Medicare Part D claims in 2024 as a General Practice Dentistry in Guthrie, Oklahoma.
- 27
- Part D claims, 2024
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Chad Wassink, D.D.S.
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1639307184), first enumerated 06/23/2009.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 27 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
Compare Wassink with other General Practice Dentistry providers
Same primary specialty, same federal CMS NPPES roster.
All 6 General Practice Dentistry providers in Guthrie, OK →
Also enrolled in Oklahoma
- Dr. Nadine Abdelkader, DDS Oklahoma City, OK
- Dr. George Abdelnour, D.D.S. Muskogee, OK
- Dr. Elie Abou Nassar, DDS Norman, OK
- Dr. Joseph Acquaviva, DDS Oklahoma City, OK
- Dr. Robert Adair, D.D.S. Midwest City, OK
- Dr. Blake Adams, DDS Bixby, OK
Other specialties in Guthrie: Case Manager/Care Coordinator (25) · Mental Health Counselor (25) · Peer Specialist (23) · Counselor (21)
CMS NPPES provider registry desk
NPI 1639307184 · General Practice Dentistry
NPI-10 · ENUM-MID · TAX-MEGA · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1639307184
- ENUM-MID 2009
- TAX-MEGA 124K General Practice
- RX-TRACE 27
- BOOK-LIGHT 1,412 in Oklahoma
- PHOTO-ENUM Taj Haynes, D.M.D · 2009
Chad Wassink, D.D.S.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
27 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Chad Wassink, D.D.S.?
Quality data not reportedPrimary specialty
General Practice Dentistry
Medicare Part D claims
27 68% vs specialty avg
Specialty distribution in Oklahoma
How General Practice Dentistry compares to other specialties among Oklahoma providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for General Practice Dentistry. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1639307184 |
|---|---|
| Specialty | General Practice Dentistry |
| Credentials | D.D.S. |
| Gender | Male |
| NPI Issued | 06/23/2009 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
27
Total Claims
$162
Total Drug Cost
19
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 29.7
- Total Day Supply
- 419
- Generic Drug Cost
- $103
- Antibiotic Claims
- 12
Patient Demographics
- Average Patient Age
- 73.7 years
- Avg HCC Risk Score
- 0.78
- Age Distribution
- <65: 0, 65-74: 11, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. 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.
General Practice Dentistry Overview
How Chad Wassink, D.D.S. fits within the General Practice Dentistry landscape nationally.
123,581
General Practice Dentistry Providers in US
56
States with General Practice Dentistry
84
Avg Claims per Provider
Chad Wassink, D.D.S.'s 27 claims are below the specialty average of 84.
Nationwide General Practice Dentistry peers with similar MIPS or enrollment year
Two federal-record peer sets for Wassink, both outside Oklahoma so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2009)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby General Practice Dentistry Providers in Oklahoma
Other clinicians with the same primary specialty enrolled in Oklahoma, drawn from the same CMS NPPES roster as Wassink.
One of 1,412 General Practice Dentistry providers enrolled in Oklahoma, 11 are shown on this page.
Dr. Michael Adams
D.D.S.
Oklahoma City, OK
Dr. Gary Adolph
D.D.S
Okmulgee, OK
Dr. Matthew Agee
DDS
Yukon, OK
Dr. John Ainsworth
D.D.S.
Mustang, OK
Dr. Michael Aitson
D.D.S.
Woodward, OK
Compare General Practice Dentistry nationally: see state-by-state distribution →
Frequently Asked Questions
What is Chad Wassink, D.D.S.'s specialty? ▼
Chad Wassink, D.D.S. specializes in General Practice Dentistry and practices in Guthrie, Oklahoma. Credentials: D.D.S..
How much does Chad Wassink, D.D.S. prescribe under Medicare Part D? ▼
In 2024, Chad Wassink, D.D.S. wrote 27 Medicare Part D claims totaling $162 in drug costs for 19 beneficiaries.
Where is Chad Wassink, D.D.S. located? ▼
Chad Wassink, D.D.S. is located at 2001 S DIVISION ST, Guthrie, OK, 73044. Phone: (405) 282-6440.
What is Chad Wassink, D.D.S.'s NPI number? ▼
Chad Wassink, D.D.S.'s National Provider Identifier (NPI) is 1639307184, issued on 06/23/2009.
How many General Practice Dentistry providers are there in the US? ▼
There are 123,581 General Practice Dentistry providers across 56 states in the US. The average General Practice Dentistry provider writes 84 Medicare Part D claims per year.
What drugs does Chad Wassink, D.D.S. prescribe most often? ▼
Based on 2024 Medicare Part D data, Chad Wassink, D.D.S.'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 Chad Wassink, D.D.S. accept Medicare? ▼
Chad Wassink, D.D.S. appears in CMS Medicare data with 27 Part D claims and 19 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Chad Wassink, D.D.S.'s credentials? ▼
Chad Wassink, D.D.S.'s NPI is 1639307184 with credentials D.D.S.. 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
View source datasets and methodology notes
- 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 (2024). 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.