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Jonathan Knowlton, MD, PHD
NPI 1881217438 · Pediatrics Physician · Philadelphia, PA
Jonathan Knowlton, MD, PHD is a Pediatrics Physician provider in Philadelphia, PA (NPI 1881217438).
Provider details
- NPI number
- 1881217438
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- MT219927 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Established profile(64/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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
3401 Civic Center Blvd
Philadelphia, PA 19104-4319
Phone: (215) 590-1220
Street-level locationGet directions
Mailing address
3401 Civic Center Blvd
Philadelphia, PA 19104-4319
Registry dates
- Enumerated
- 2020-05-18
- Last updated
- 2020-05-18
- Certified
- 2020-05-18
Frequently asked questions
- What is Jonathan Knowlton's NPI number?
- Jonathan Knowlton's National Provider Identifier (NPI) is 1881217438, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Knowlton's specialty?
- Jonathan Knowlton is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Knowlton located?
- Jonathan Knowlton's practice location on file with NPPES is 3401 Civic Center Blvd, Philadelphia, PA 19104-4319.
- What is Jonathan Knowlton's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Knowlton is (215) 590-1220.
- Is Jonathan Knowlton's NPI active?
- Yes — Jonathan Knowlton's NPI (1881217438) is active in the NPPES registry as of the last update on 2020-05-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.