Data from the NPPES registry. May not reflect recent changes — verify at nppes.cms.hhs.gov.
DR. FREDERICK RICHARD STACK, MD
Active Sole ProprietorDR. FREDERICK RICHARD STACK, MD is a Internal Medicine healthcare provider located in SIOUX CITY, Iowa. NPI 1548256977 is currently active in the NPPES registry. Verify at CMS.
Internal Medicine · SIOUX CITY, IA
Registration Details
- NPI Number
- 1548256977
- Provider Type
- Individual
- Gender
- Male
- NPI Issued
- Sep 21, 2005 (20.712305652011 yrs)
- Last Updated
- Jan 28, 2026
- Licenses
-
91977 (MT)MD-46368 (IA)24459 (AZ)
- Sole Proprietor
- Yes
Practice Information
- Address
-
801 5TH STSIOUX CITY, IA, 511011326Browse IA providers · Browse ZIP 51101
- Phone
- 7122792010
- Fax
- 7122792034
- Primary Specialty
-
Internal Medicine
207R00000X
- Additional Specialty
- Internal Medicine
- Additional Specialty
- Specialist
Other Internal Medicine Providers in SIOUX CITY, IA
| Name | Credential | NPI |
|---|---|---|
| AMY L. CALLAGHAN | DO | 1215924964 |
| DR. RODRIGO TORRES | M.D. | 1952390189 |
| MARK O. CARLSON | M.D. | 1609837368 |
| JOLYNN A. BUGBEE | M.D. | 1801858774 |
| DAVID W LUCKE | MD | 1457309197 |
| DALE R HOLDIMAN | MD | 1306894050 |
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.