Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Karl M. Baumgartner, MD
Pediatrics Physician in Mesa, AZ · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1174522890
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Registry record
Entity type Individual (Type 1)
Name Karl M. Baumgartner
Credential MD
Sex Male
Practice address 5131 E Southern Ave, Mesa, AZ, 85206
Phone (480) 833-5437
Fax (480) 833-9349
Enumeration date Jul 14, 2005
Last updated in NPPES Jan 15, 2018
Taxonomy & licenses
2080A0000X Pediatric Adolescent Medicine Physician Allopathic & Osteopathic Physicians · License 22020 (AZ) Secondary
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 |
|---|---|---|---|
| 166654 | Medicaid | AZ | - |
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
What specialty is Karl Baumgartner?
Karl Baumgartner is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
Browse all → James Williams Pediatric Hematology & Oncology Physician · Mesa, AZ NPI 1316930837 Joseph Gassen Pediatrics Physician · Mesa, AZ NPI 1972586006 Sanjay Shah Pediatric Hematology & Oncology Physician · Mesa, AZ NPI 1740263474 Adrianna Salazar Speech-Language Pathologist · Mesa, AZ NPI 1043363831 Ginger Carlson Clinical Psychologist · Mesa, AZ NPI 1881722692 Phoenix Children'S Medical Group Multi-Specialty Clinic/Center · Mesa, AZ NPI 1487814240 Phoenix Children'S Hospital, Inc. Children's Hospital · Mesa, AZ NPI 1275886434 Phoenix Children'S Hospital, Inc. Urgent Care Clinic/Center · Mesa, AZ NPI 1215271911
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-15.