NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Robert J Chesser, MD

Physical Medicine & Rehabilitation Physician in Rock Island, IL · enumerated 2005 · practices at Rammohan Marla, P.C..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1508863176

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Registry record

Entity type Individual (Type 1)
Name Dr. Robert J Chesser
Credential MD
Sex Male
Practice address Rock Island, IL, 61201
Fax (309) 779-2815
Enumeration date Jun 28, 2005
Last updated in NPPES Feb 5, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 036058383 (IL) Primary
208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 23454 (IA) 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
P01136858 Other IL RR MEDICARE
036058383 Medicaid IL -
0930263 Medicaid IA -
1508863176 Medicaid IA -
P01278237 Other IA RR MEDICARE

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 → Validate an NPI →

Frequently asked questions

What specialty is Robert Chesser?
Robert Chesser is registered in NPPES with the primary taxonomy of Physical Medicine & Rehabilitation 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-05.