Quick answers
- Does Allison F. Messina accept Medicare assignment?
- Yes. Medicare's clinician data says Allison F. Messina accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Allison F. Messina's NPI number?
- 1124056999. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Allison F. Messina works
Medicare's Facility Affiliation Data lists Allison F. Messina at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Cape Cod HospitalHyannis, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220012
- Johns Hopkins All Children's HospitalSaint Petersburg, FL · Children's Hospital · Emergency services: listed by Medicare · CCN 103300
Practice locations
Addresses where Allison F. Messina is enrolled with Medicare (CMS data updated October 2, 2026).
- 601 5th St S, Suite 5St Petersburg, FL 33701 (727) 727‑4429
Group practices
Medicare enrollment lists Allison F. Messina as a member of this group (CMS data updated October 2, 2026).
- Pediatric Physician Services, Inc.209 clinicians in the group
Specialties
- Infectious Diseaseprimary
Other infectious disease doctors in St Petersburg
Clinicians with the same Medicare primary specialty in St Petersburg, FL — not a recommendation.
Other clinicians in Pediatric Physician Services, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Medical school | Vanderbilt University School Of Medicine |
|---|---|
| Graduation year | 1998 (28 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124056999 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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