Mary St. John, MMS, PA-C
NPI 1255840385 · Medical Physician Assistant · Charlotte, NC
Mary St. John, MMS, PA-C is a Medical Physician Assistant provider in Charlotte, NC (NPI 1255840385).
Provider details
- NPI number
- 1255840385
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- MMS, PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 0010-07443 (NC)
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
8 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
- 2017-09-20
- Last updated
- 2017-09-20
Frequently asked questions
- What is Mary St. John's NPI number?
- Mary St. John's National Provider Identifier (NPI) is 1255840385, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary St. John's specialty?
- Mary St. John is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary St. John located?
- Mary St. John's practice location on file with NPPES is 1900 Scott Ave, Charlotte, NC 28203-6046.
- What is Mary St. John's phone number?
- The practice phone number listed in the NPPES registry for Mary St. John is (704) 334-7311.
- Is Mary St. John's NPI active?
- Yes — Mary St. John's NPI (1255840385) is active in the NPPES registry as of the last update on 2017-09-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.