Quick answers
- Which hospitals does Lawrence T. Harmon work at?
- Medicare's official clinician data lists Lawrence T. Harmon at 5 hospitals: Alton Memorial Hospital, Anderson Hospital, Barnes Jewish Hospital, Gateway Regional Medical Center and Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Lawrence T. Harmon see patients?
- Medicare's clinician data lists 1 practice location in Granite City, IL. Call before your visit to confirm the address.
- What is Lawrence T. Harmon's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Lawrence T. Harmon accept Medicare assignment?
- Medicare's clinician data says Lawrence T. Harmon may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Lawrence T. Harmon?
- (618) 451-1500, as listed in official Medicare / NPI Registry data.
- What is Lawrence T. Harmon's NPI number?
- 1275526956. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Lawrence T. Harmon works
Medicare's Facility Affiliation Data lists Lawrence T. Harmon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alton Memorial HospitalAlton, IL · Acute Care Hospital · CCN 140002
- Anderson HospitalMaryville, IL · Acute Care Hospital · CCN 140289
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Gateway Regional Medical CenterGranite City, IL · Acute Care Hospital · CCN 140125
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
Practice locations
Addresses where Lawrence T. Harmon is enrolled with Medicare (CMS data updated 2026-10-02).
- 2044 Madison Ave, Suite 24Granite City, IL 62040 (618) 451‑1500
Group practices
Medicare enrollment lists Lawrence T. Harmon as a member of this group (CMS data updated 2026-10-02).
- Ahs Il Medical Group LLC45 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Granite City
Clinicians with the same Medicare primary specialty in Granite City, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1974 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1275526956 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians