Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Steven Carl Hallberg, M.D.
Nephrology Physician in Ames, IA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1720077035
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Registry record
Entity type Individual (Type 1)
Name Dr. Steven Carl Hallberg
Credential M.D.
Sex Male
Practice address 1015 Duff Ave, Ames, IA, 50010
Phone (515) 239-4760
Fax (515) 239-4420
Enumeration date Oct 19, 2005
Last updated in NPPES Nov 13, 2020
Taxonomy & licenses
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0091389 | Medicaid | IA | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Steven Hallberg?
Steven Hallberg is registered in NPPES with the primary taxonomy of Nephrology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Darryl Johnson Obstetrics & Gynecology Physician · Ames, IA NPI 1720084916 Joyce Lines Obstetrics & Gynecology Physician · Ames, IA NPI 1649270588 Roberta Baldus Obstetrics & Gynecology Physician · Ames, IA NPI 1518967454 Jack Swanson Obstetrics & Gynecology Physician · Ames, IA NPI 1467445007 Jacob Alexander Nephrology Physician · Ames, IA NPI 1558357376 Bonnie Beer Obstetrics & Gynecology Physician · Ames, IA NPI 1609863216 Donna Deardorff Advanced Practice Midwife · Ames, IA NPI 1033107768 James Downard Obstetrics & Gynecology Physician · Ames, IA NPI 1720076243
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-13.