Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
DR. NICHOLAS JOHN-JAMES LETTNER-KNOWLTON, MD
ActiveDR. NICHOLAS JOHN-JAMES LETTNER-KNOWLTON, MD is a Internal Medicine healthcare provider located in SAGINAW, Michigan. NPI 1356075147 is currently active in the NPPES registry. Verify at CMS.
Internal Medicine · SAGINAW, MI
Registration Details
- NPI Number
- 1356075147
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Jul 15, 2022 (4.086640548958 yrs)
- Last Updated
- Jan 9, 2026
- Licenses
-
4301514040 (MI)4301514040 (MI)
Practice Information
- Address
-
1015 S WASHINGTON AVESAGINAW, MI, 486012556Browse MI providers · Browse ZIP 48601
- Phone
- 9897467500
- Fax
- 9897467728
- Primary Specialty
-
Internal Medicine
207R00000X
- Additional Specialty
- Hospitalist
Other Internal Medicine Providers in SAGINAW, MI
| Name | Credential | NPI |
|---|---|---|
| NIKOLAI KINACHTCHOUK | M.D. | 1306830963 |
| LIOUDMILA KINACHTCHOUK | M.D. | 1124012786 |
| RAMA C MULPURI | M.D. | 1366439697 |
| RAY PETER MANGULABNAN | MD | 1003804766 |
| DR. MARK FRANCIS KULIGOWSKI | DO | 1629069406 |
| NICHOLAS PARON | M.D. | 1568446540 |
Data sourced from the NPPES National Provider Identifier registry. This information is for informational purposes only and is not a substitute for verifying credentials with the appropriate licensing authority. For official verification, use the NPPES NPI Registry or the relevant state medical board.