Gary Lessmann, MD
NPI 1063488401 · Family Medicine Physician · Chesterfield, MO
Gary Lessmann, MD is a Family Medicine Physician provider in Chesterfield, MO (NPI 1063488401).
Provider details
- NPI number
- 1063488401
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- R2C68 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
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
- 2006-02-26
- Last updated
- 2020-02-19
- Certified
- 2020-02-19
Frequently asked questions
- What is Gary Lessmann's NPI number?
- Gary Lessmann's National Provider Identifier (NPI) is 1063488401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Lessmann's specialty?
- Gary Lessmann is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Lessmann located?
- Gary Lessmann's practice location on file with NPPES is 201 W Manor Dr, Chesterfield, MO 63017-2970.
- What is Gary Lessmann's phone number?
- The practice phone number listed in the NPPES registry for Gary Lessmann is (314) 576-7357.
- Is Gary Lessmann's NPI active?
- Yes — Gary Lessmann's NPI (1063488401) is active in the NPPES registry as of the last update on 2020-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.