OrganizationActive
Mark Youssef MD. Inc.
NPI 1912224189 · Family Medicine Physician · Pasadena, CA
Mark Youssef MD. Inc. is a Family Medicine Physician organization in Pasadena, CA (NPI 1912224189).
Provider details
- NPI number
- 1912224189
- Entity type
- Organization
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mark Youssef, President(626) 796-3552
- License
- A49793 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(83/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
275 S San Gabriel Blvd
Pasadena, CA 91107-4893
Phone: (626) 796-3552
Fax: (626) 796-3552
Street-level locationGet directions
Mailing address
275 S San Gabriel Blvd
Pasadena, CA 91107-4893
Registry dates
- Enumerated
- 2010-04-28
- Last updated
- 2010-04-28
Frequently asked questions
- What is Mark Youssef MD. Inc.'s NPI number?
- Mark Youssef MD. Inc.'s National Provider Identifier (NPI) is 1912224189, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mark Youssef MD. Inc.?
- Mark Youssef MD. Inc. is classified in the NPPES registry as Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Youssef MD. Inc. located?
- Mark Youssef MD. Inc.'s practice location on file with NPPES is 275 S San Gabriel Blvd, Pasadena, CA 91107-4893.
- What is Mark Youssef MD. Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Mark Youssef MD. Inc. is (626) 796-3552.
- Who is the authorized official for Mark Youssef MD. Inc.?
- The authorized official listed on Mark Youssef MD. Inc.'s NPPES record is Mark Youssef, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mark Youssef MD. Inc.'s NPI active?
- Yes — Mark Youssef MD. Inc.'s NPI (1912224189) is active in the NPPES registry as of the last update on 2010-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.