NPI Portal NPI Lookup & Verification

Dr. Robert C Hartmann, MD

Dr. Robert C Hartmann is a Internal Medicine Physician provider (Internal Medicine) practicing in Jackson, CA, registered in the NPPES registry with NPI 1922019017 since 2006. The credential MD stands for Doctor of Medicine.

✓ Active NPI ✓ Valid NPI checksum

NPI 1922019017
Entity type Individual (Type 1)
Name Dr. Robert C Hartmann
Credential MD
Sex Male
Practice address 100 MISSION BLVD STE 2200, Jackson, CA, 95642
Phone 2092575900
Fax 2092575901
Enumeration date 2006-08-11
Last updated in NPPES 2019-02-20

Taxonomy & licenses

Taxonomy code Specialty Primary License State
207R00000X Internal Medicine Physician Primary C42503 CA

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
00C425030 Medicaid CA
Copy-ready billing details
Provider: Robert Hartmann, MD
NPI: 1922019017
Taxonomy: 207R00000X (Internal Medicine Physician)
Address: 100 MISSION BLVD STE 2200, Jackson, CA, 95642

Other providers at this practice address

NPI Name Type Specialty Location
1972567683 Robert Monie Individual Pulmonary Disease Physician Jackson, CA
1649357179 Michelle Roland Individual Internal Medicine Physician Jackson, CA
1639244296 Alan Belch Individual Physician Assistant Jackson, CA
1275609729 Scott Heatley Individual Internal Medicine Physician Jackson, CA

Verify this record

Cross-check NPI 1922019017 against the authoritative CMS record: view Dr. Robert C Hartmann on the official NPPES registry .

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. Read the full guide or validate an NPI number.

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 Robert Hartmann?
Robert Hartmann is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2019-02-20.