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Nick Mashour, M.D
NPI 1508896515 · Internal Medicine Physician · Costa Mesa, CA
Nick Mashour, M.D is a Internal Medicine Physician provider in Costa Mesa, CA (NPI 1508896515).
Provider details
- NPI number
- 1508896515
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- Yes
- License
- A72007 (CA)
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
125 Baker St E
Suite 180
Costa Mesa, CA 92626-4509
Phone: (714) 540-5900
Fax: (714) 540-5906
Street-level locationGet directions
Mailing address
Po Box 1867
Huntington Beach, CA 92647-1867
Registry dates
- Enumerated
- 2006-07-04
- Last updated
- 2013-01-31
Frequently asked questions
- What is Nick Mashour's NPI number?
- Nick Mashour's National Provider Identifier (NPI) is 1508896515, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nick Mashour's specialty?
- Nick Mashour is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nick Mashour located?
- Nick Mashour's practice location on file with NPPES is 125 Baker St E, Costa Mesa, CA 92626-4509.
- What is Nick Mashour's phone number?
- The practice phone number listed in the NPPES registry for Nick Mashour is (714) 540-5900.
- Is Nick Mashour's NPI active?
- Yes — Nick Mashour's NPI (1508896515) is active in the NPPES registry as of the last update on 2013-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.