Jonathan Slack, MD
NPI 1487226387 · Pediatric Pathology Physician · Cleveland, OH
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jonathan Slack, MD is a Pediatric Pathology Physician provider in Cleveland, OH (NPI 1487226387).
Provider details
- NPI number
- 1487226387
- Entity type
- Individual
- Primary specialty
- Pediatric Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 287182 (MA)
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
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 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 (1)
- 300 Longwood AveBoston, MA 02115-5724Phone: (617) 355-4357
Registry dates
- Enumerated
- 2021-07-12
- Last updated
- 2023-03-11
- Certified
- 2023-03-11
Frequently asked questions
- What is Jonathan Slack's NPI number?
- Jonathan Slack's National Provider Identifier (NPI) is 1487226387, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Slack's specialty?
- Jonathan Slack is listed in the NPPES registry with a primary specialty of Pediatric Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Jonathan Slack located?
- Jonathan Slack's practice location on file with NPPES is 9500 Euclid Ave L2, Cleveland, OH 44195.
- What is Jonathan Slack's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Slack is (216) 448-4899.
- Does Jonathan Slack accept Medicare?
- Jonathan Slack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jonathan Slack's NPI active?
- Yes — Jonathan Slack's NPI (1487226387) is active in the NPPES registry as of the last update on 2023-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.