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John O'Connor, M.D.
NPI 1356392310 · Family Medicine Physician · O Fallon, MO
John O'Connor, M.D. is a Family Medicine Physician provider in O Fallon, MO (NPI 1356392310).
Provider details
- NPI number
- 1356392310
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 35988 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
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
1002 Peruque Crossing Ct
Suite 101
O Fallon, MO 63366-2362
Phone: (636) 294-5900
Fax: (636) 294-5908
Street-level locationGet directions
Mailing address
1002 Peruque Crossing Ct
O Fallon, MO 63366-2362
Registry dates
- Enumerated
- 2006-05-15
- Last updated
- 2014-11-13
Frequently asked questions
- What is John O'Connor's NPI number?
- John O'Connor's National Provider Identifier (NPI) is 1356392310, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John O'Connor's specialty?
- John O'Connor is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John O'Connor located?
- John O'Connor's practice location on file with NPPES is 1002 Peruque Crossing Ct, O Fallon, MO 63366-2362.
- What is John O'Connor's phone number?
- The practice phone number listed in the NPPES registry for John O'Connor is (636) 294-5900.
- Is John O'Connor's NPI active?
- Yes — John O'Connor's NPI (1356392310) is active in the NPPES registry as of the last update on 2014-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.