Christos Mastroyannis, MD FACOG
NPI 1629009543 · Reproductive Endocrinology Physician · Fairfax, VA
Christos Mastroyannis, MD FACOG is a Reproductive Endocrinology Physician provider in Fairfax, VA (NPI 1629009543).
Provider details
- NPI number
- 1629009543
- Entity type
- Individual
- Primary specialty
- Reproductive Endocrinology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD FACOG
- Sex
- Male
- Sole proprietor
- No
- License
- 0101045024 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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
Mailing address
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Christos Mastroyannis's NPI number?
- Christos Mastroyannis's National Provider Identifier (NPI) is 1629009543, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christos Mastroyannis's specialty?
- Christos Mastroyannis is listed in the NPPES registry with a primary specialty of Reproductive Endocrinology Physician (Allopathic & Osteopathic Physicians).
- Where is Christos Mastroyannis located?
- Christos Mastroyannis's practice location on file with NPPES is 8501 Arlington Blvd, Fairfax, VA 22031-4617.
- What is Christos Mastroyannis's phone number?
- The practice phone number listed in the NPPES registry for Christos Mastroyannis is (877) 449-0400.
- Is Christos Mastroyannis's NPI active?
- Yes — Christos Mastroyannis's NPI (1629009543) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.