Mark Feinberg, MD, PHD
NPI 1851019236 · Internal Medicine Physician · Philadelphia, PA
Mark Feinberg, MD, PHD is a Internal Medicine Physician provider in Philadelphia, PA (NPI 1851019236).
Provider details
- NPI number
- 1851019236
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G73726 (CA)
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
3 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
- 2022-08-22
- Last updated
- 2022-08-22
- Certified
- 2022-08-21
Frequently asked questions
- What is Mark Feinberg's NPI number?
- Mark Feinberg's National Provider Identifier (NPI) is 1851019236, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Feinberg's specialty?
- Mark Feinberg is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Feinberg located?
- Mark Feinberg's practice location on file with NPPES is 1020 W Upsal St, Philadelphia, PA 19119-3715.
- What is Mark Feinberg's phone number?
- The practice phone number listed in the NPPES registry for Mark Feinberg is (215) 435-6981.
- Is Mark Feinberg's NPI active?
- Yes — Mark Feinberg's NPI (1851019236) is active in the NPPES registry as of the last update on 2022-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.