Mary Margaret O'Neill MD Inc
NPI 1669432092 · Obstetrics & Gynecology Physician · Campbell, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Margaret O'Neill MD Inc is a Obstetrics & Gynecology Physician organization in Campbell, CA (NPI 1669432092).
Provider details
- NPI number
- 1669432092
- Entity type
- Organization
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mary Oneill, President(408) 583-0522
- License
- G069694 (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
20 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
Other names (DBA / former)
- Doing business as
- Cedar Ob/Gyn Inc
Registry dates
- Enumerated
- 2006-03-28
- Last updated
- 2020-03-17
- Certified
- 2020-03-17
Frequently asked questions
- What is Mary Margaret O'Neill MD Inc's NPI number?
- Mary Margaret O'Neill MD Inc's National Provider Identifier (NPI) is 1669432092, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mary Margaret O'Neill MD Inc?
- Mary Margaret O'Neill MD Inc is classified in the NPPES registry as Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Margaret O'Neill MD Inc located?
- Mary Margaret O'Neill MD Inc's practice location on file with NPPES is 200 W Campbell Ave, Campbell, CA 95008-1030.
- What is Mary Margaret O'Neill MD Inc's phone number?
- The practice phone number listed in the NPPES registry for Mary Margaret O'Neill MD Inc is (408) 583-0522.
- Does Mary Margaret O'Neill MD Inc accept Medicare?
- Mary Margaret O'Neill MD Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Mary Margaret O'Neill MD Inc?
- The authorized official listed on Mary Margaret O'Neill MD Inc's NPPES record is Mary Oneill, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mary Margaret O'Neill MD Inc's NPI active?
- Yes — Mary Margaret O'Neill MD Inc's NPI (1669432092) is active in the NPPES registry as of the last update on 2020-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.