IndividualActive
Mary Gellens, MD
NPI 1992713747 · Nephrology Physician · Saint Louis, MO
Mary Gellens, MD is a Nephrology Physician provider in Saint Louis, MO (NPI 1992713747).
Provider details
- NPI number
- 1992713747
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- R7G08 (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
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
3660 Vista Ave
Saint Louis, MO 63110-2540
Phone: (314) 977-8765
Fax: (314) 771-0784
Street-level locationGet directions
Mailing address
3691 Rutger Ave
St Louis, MO 63110
Registry dates
- Enumerated
- 2006-08-04
- Last updated
- 2008-03-17
Frequently asked questions
- What is Mary Gellens's NPI number?
- Mary Gellens's National Provider Identifier (NPI) is 1992713747, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gellens's specialty?
- Mary Gellens is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Gellens located?
- Mary Gellens's practice location on file with NPPES is 3660 Vista Ave, Saint Louis, MO 63110-2540.
- What is Mary Gellens's phone number?
- The practice phone number listed in the NPPES registry for Mary Gellens is (314) 977-8765.
- Is Mary Gellens's NPI active?
- Yes — Mary Gellens's NPI (1992713747) is active in the NPPES registry as of the last update on 2008-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.