Mark Sewell, M.D.
NPI 1912913880 · Maternal & Fetal Medicine Physician · Alexandria, VA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sewell, M.D. is a Maternal & Fetal Medicine Physician provider in Alexandria, VA (NPI 1912913880).
Provider details
- NPI number
- 1912913880
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2011-1303 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
3 documented practice locations
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
Additional practice locations (2)
- 155 Memorial DrivePinehurst, NC 28374-8159Phone: (910) 715-2220Fax: (910) 908-7378
- 3300 Gallows RdFalls Church, VA 22042-3307Phone: (703) 776-4001Fax: (703) 776-7113
Registry dates
- Enumerated
- 2006-07-31
- Last updated
- 2021-07-20
- Certified
- 2021-07-20
Frequently asked questions
- What is Mark Sewell's NPI number?
- Mark Sewell's National Provider Identifier (NPI) is 1912913880, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sewell's specialty?
- Mark Sewell is listed in the NPPES registry with a primary specialty of Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Sewell located?
- Mark Sewell's practice location on file with NPPES is 4320 Seminary Rd, Alexandria, VA 22304-1535.
- What is Mark Sewell's phone number?
- The practice phone number listed in the NPPES registry for Mark Sewell is (703) 504-3000.
- Does Mark Sewell accept Medicare?
- Mark Sewell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sewell's NPI active?
- Yes — Mark Sewell's NPI (1912913880) is active in the NPPES registry as of the last update on 2021-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.