Maryellen Stemmer, D.O.
NPI 1467487942 · Obstetrics & Gynecology Physician · Yuba City, CA
Maryellen Stemmer, D.O. is a Obstetrics & Gynecology Physician provider in Yuba City, CA (NPI 1467487942).
Provider details
- NPI number
- 1467487942
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A6390 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2019-07-12
Frequently asked questions
- What is Maryellen Stemmer's NPI number?
- Maryellen Stemmer's National Provider Identifier (NPI) is 1467487942, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maryellen Stemmer's specialty?
- Maryellen Stemmer is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Maryellen Stemmer located?
- Maryellen Stemmer's practice location on file with NPPES is 483 Gabriel Ave, Yuba City, CA 95993-9389.
- What is Maryellen Stemmer's phone number?
- The practice phone number listed in the NPPES registry for Maryellen Stemmer is (530) 751-3880.
- Is Maryellen Stemmer's NPI active?
- Yes — Maryellen Stemmer's NPI (1467487942) is active in the NPPES registry as of the last update on 2019-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.