Mark Pfeifer, MD
NPI 1699753384 · Internal Medicine Physician · Louisville, KY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Pfeifer, MD is a Internal Medicine Physician provider in Louisville, KY (NPI 1699753384).
Provider details
- NPI number
- 1699753384
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25447 (KY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-01-04
- Last updated
- 2008-05-02
Frequently asked questions
- What is Mark Pfeifer's NPI number?
- Mark Pfeifer's National Provider Identifier (NPI) is 1699753384, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Pfeifer's specialty?
- Mark Pfeifer is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Pfeifer located?
- Mark Pfeifer's practice location on file with NPPES is 201 Abraham Flexner Way, Louisville, KY 40202-3841.
- What is Mark Pfeifer's phone number?
- The practice phone number listed in the NPPES registry for Mark Pfeifer is (502) 589-6788.
- Does Mark Pfeifer accept Medicare?
- Mark Pfeifer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Pfeifer's NPI active?
- Yes — Mark Pfeifer's NPI (1699753384) is active in the NPPES registry as of the last update on 2008-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.