Mark Klaassen, DO
NPI 1225886021 · Student in an Organized Health Care Education/Training Program · Lawton, OK
Mark Klaassen, DO is a Student in an Organized Health Care Education/Training Program provider in Lawton, OK (NPI 1225886021).
Provider details
- NPI number
- 1225886021
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
2 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$15 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-05-08
- Last updated
- 2024-05-08
- Certified
- 2024-05-08
Frequently asked questions
- What is Mark Klaassen's NPI number?
- Mark Klaassen's National Provider Identifier (NPI) is 1225886021, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Klaassen's specialty?
- Mark Klaassen is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Mark Klaassen located?
- Mark Klaassen's practice location on file with NPPES is 3401 W Gore Blvd, Lawton, OK 73505-6332.
- What is Mark Klaassen's phone number?
- The practice phone number listed in the NPPES registry for Mark Klaassen is (580) 585-5545.
- Is Mark Klaassen's NPI active?
- Yes — Mark Klaassen's NPI (1225886021) is active in the NPPES registry as of the last update on 2024-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.