Christopher Ko, M.D.
NPI 1255364105 · Internal Medicine Physician · Vienna, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Ko, M.D. is a Internal Medicine Physician provider in Vienna, VA (NPI 1255364105).
Provider details
- NPI number
- 1255364105
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA08039300 (NJ)
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
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
- 2006-07-07
- Last updated
- 2023-09-08
- Certified
- 2023-09-08
Frequently asked questions
- What is Christopher Ko's NPI number?
- Christopher Ko's National Provider Identifier (NPI) is 1255364105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Ko's specialty?
- Christopher Ko is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Ko located?
- Christopher Ko's practice location on file with NPPES is 8133 Leesburg Pike, Vienna, VA 22182-2751.
- What is Christopher Ko's phone number?
- The practice phone number listed in the NPPES registry for Christopher Ko is (703) 291-0021.
- Does Christopher Ko accept Medicare?
- Christopher Ko is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Ko's NPI active?
- Yes — Christopher Ko's NPI (1255364105) is active in the NPPES registry as of the last update on 2023-09-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.