Mareen Greenway, M.D
NPI 1619388972 · Family Medicine Physician · Irvine, CA
Mareen Greenway, M.D is a Family Medicine Physician provider in Irvine, CA (NPI 1619388972).
Provider details
- NPI number
- 1619388972
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Female
- Sole proprietor
- No
- License
- A152024 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 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
- 2014-05-08
- Last updated
- 2022-07-08
- Certified
- 2021-05-05
Frequently asked questions
- What is Mareen Greenway's NPI number?
- Mareen Greenway's National Provider Identifier (NPI) is 1619388972, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mareen Greenway's specialty?
- Mareen Greenway is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mareen Greenway located?
- Mareen Greenway's practice location on file with NPPES is 4 Park Plz Ste 2050, Irvine, CA 92614-8603.
- What is Mareen Greenway's phone number?
- The practice phone number listed in the NPPES registry for Mareen Greenway is (949) 503-5111.
- Is Mareen Greenway's NPI active?
- Yes — Mareen Greenway's NPI (1619388972) is active in the NPPES registry as of the last update on 2022-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.