IndividualActive
Mark Schalk, RN
NPI 1225981749 · Registered Nurse · Del City, OK
Mark Schalk, RN is a Registered Nurse provider in Del City, OK (NPI 1225981749).
Provider details
- NPI number
- 1225981749
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- RN
- Sex
- Male
- Sole proprietor
- Yes
- License
- R0079023 (OK)
Specialties & taxonomies
Nursing Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
1900 S Sunnylane Rd
Del City, OK 73115-3102
Phone: (405) 677-5777
Street-level locationGet directions
Mailing address
10405 Se 23rd St
Midwest City, OK 73130-7639
Registry dates
- Enumerated
- 2026-02-16
- Last updated
- 2026-02-16
- Certified
- 2026-02-16
Frequently asked questions
- What is Mark Schalk's NPI number?
- Mark Schalk's National Provider Identifier (NPI) is 1225981749, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Schalk's specialty?
- Mark Schalk is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Mark Schalk located?
- Mark Schalk's practice location on file with NPPES is 1900 S Sunnylane Rd, Del City, OK 73115-3102.
- What is Mark Schalk's phone number?
- The practice phone number listed in the NPPES registry for Mark Schalk is (405) 677-5777.
- Is Mark Schalk's NPI active?
- Yes — Mark Schalk's NPI (1225981749) is active in the NPPES registry as of the last update on 2026-02-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.