Susan Iffrig, N.P.
NPI 1588663405 · Family Nurse Practitioner · Saint Peters, MO
Susan Iffrig, N.P. is a Family Nurse Practitioner provider in Saint Peters, MO (NPI 1588663405).
Provider details
- NPI number
- 1588663405
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- N.P.
- Sex
- Female
- Sole proprietor
- No
- License
- 102332 (MO)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
2 documented practice locations
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
Additional practice locations (1)
- 330 First Capitol Dr.Suite 470St. Charles, MO 63301-2847Phone: (636) 946-1650Fax: (636) 947-6621
Registry dates
- Enumerated
- 2005-07-21
- Last updated
- 2021-01-28
- Certified
- 2021-01-28
Frequently asked questions
- What is Susan Iffrig's NPI number?
- Susan Iffrig's National Provider Identifier (NPI) is 1588663405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Iffrig's specialty?
- Susan Iffrig is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Susan Iffrig located?
- Susan Iffrig's practice location on file with NPPES is 1901 Trade Center Dr, Saint Peters, MO 63376-1262.
- What is Susan Iffrig's phone number?
- The practice phone number listed in the NPPES registry for Susan Iffrig is (636) 978-1610.
- Is Susan Iffrig's NPI active?
- Yes — Susan Iffrig's NPI (1588663405) is active in the NPPES registry as of the last update on 2021-01-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.