Nathan Strandmark, D.O.
Nathan Strandmark, D.O. is a Family Medicine Physician in Tulsa, OK, registered under NPI 1457428518.
Getting there
The practice address on file is 7912 E 31ST CT STE 300, Tulsa, OK 74145. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 7211 | OK | Family Medicine Physician primary |
This provider holds licence 7211 issued in OK. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Family Practice
- PAC ID
- 2769583905
- Enrollment ID
- I20210715000099
Medicare enrolment is recorded as approved under the provider type Practitioner - Family Practice. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Family Medicine covers
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity. NUCC Health Care Provider Taxonomy, code 207Q00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1457428518 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 30, 2006 |
| Last updated | Dec 22, 2025 |
| Status | Active |
| Sole proprietor | No |
| Credential | D.O. |
| Practice address |
7912 E 31ST CT STE 300 Tulsa, OK 74145 (918) 743-8200 Fax (918) 743-8609 |
| Mailing address |
601 S HARBOUR ISLAND BLVD STE 200 Tampa, FL 33602 |
| Other identifiers |
100088530
· Medicaid (KS) |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 4 | 5 | 7 | 4 | 2 | 8 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 4 | 1 | 7 | 8 | 2 | 7 | 5 | 2 |
Sum = 62 · next multiple of 10 = 70 · check digit = 8 · actual last digit = 8
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.