Margaret Mariella, M.D.
NPI 1033563689 · General Practice Physician · Danville, CA
Enrolled with Medicare as Order and Referring Only - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Mariella, M.D. is a General Practice Physician provider in Danville, CA (NPI 1033563689).
Provider details
- NPI number
- 1033563689
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2016-04-20
- Last updated
- 2021-05-24
- Certified
- 2021-05-10
Frequently asked questions
- What is Margaret Mariella's NPI number?
- Margaret Mariella's National Provider Identifier (NPI) is 1033563689, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Mariella's specialty?
- Margaret Mariella is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Mariella located?
- Margaret Mariella's practice location on file with NPPES is 1110 Mustang Dr, Danville, CA 94526.
- What is Margaret Mariella's phone number?
- The practice phone number listed in the NPPES registry for Margaret Mariella is (661) 326-2000.
- Does Margaret Mariella accept Medicare?
- Margaret Mariella is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Mariella's NPI active?
- Yes — Margaret Mariella's NPI (1033563689) is active in the NPPES registry as of the last update on 2021-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.