Alexander Bollis, M.D.
NPI 1558309757 · Cardiovascular Disease Physician · O Fallon, MO
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexander Bollis, M.D. is a Cardiovascular Disease Physician provider in O Fallon, MO (NPI 1558309757).
Provider details
- NPI number
- 1558309757
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 36068 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-02
- Last updated
- 2008-10-09
Frequently asked questions
- What is Alexander Bollis's NPI number?
- Alexander Bollis's National Provider Identifier (NPI) is 1558309757, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Bollis's specialty?
- Alexander Bollis is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Alexander Bollis located?
- Alexander Bollis's practice location on file with NPPES is 5551 Winghaven Blvd, O Fallon, MO 63368-3617.
- What is Alexander Bollis's phone number?
- The practice phone number listed in the NPPES registry for Alexander Bollis is (636) 695-2514.
- Does Alexander Bollis accept Medicare?
- Alexander Bollis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexander Bollis's NPI active?
- Yes — Alexander Bollis's NPI (1558309757) is active in the NPPES registry as of the last update on 2008-10-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.