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Michael Siemer, M.D.
NPI 1134280589 · Pediatrics Physician · Saint Louis, MO
Michael Siemer, M.D. is a Pediatrics Physician provider in Saint Louis, MO (NPI 1134280589).
Provider details
- NPI number
- 1134280589
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- R8F24 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
621 S New Ballas Rd
Suite 6006b
Saint Louis, MO 63141-8232
Phone: (314) 251-6299
Fax: (314) 251-4450
Street-level locationGet directions
Mailing address
621 S New Ballas Rd
Saint Louis, MO 63141-8232
Registry dates
- Enumerated
- 2006-12-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Michael Siemer's NPI number?
- Michael Siemer's National Provider Identifier (NPI) is 1134280589, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Siemer's specialty?
- Michael Siemer is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Siemer located?
- Michael Siemer's practice location on file with NPPES is 621 S New Ballas Rd, Saint Louis, MO 63141-8232.
- What is Michael Siemer's phone number?
- The practice phone number listed in the NPPES registry for Michael Siemer is (314) 251-6299.
- Is Michael Siemer's NPI active?
- Yes — Michael Siemer's NPI (1134280589) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.