JONATHAN CORWIN SLACK MD
NPI 1487226387
Pathology - Pediatric Pathology in Cleveland, OH
About Jonathan Corwin Slack Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JONATHAN CORWIN SLACK MD (NPI 1487226387) is an individual pediatric pathology provider in Cleveland, Ohio, licensed in Massachusetts (287182) and active in the NPI registry since July 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in Boston, and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Jonathan Corwin Slack Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Jonathan Slack reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cleveland, OH 44195
- Reassigned Medicare billing, Ohio enrollment
- 7,608 clinicians in this Medicare group
Wooster, OH 44691
- Reassigned Medicare billing, Ohio enrollment
- 837 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 44195 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Jonathan Slack's NPI number?
The NPI number for Jonathan Slack is 1487226387. It was assigned to this individual provider in the NPPES registry on July 12, 2021.
Where is Jonathan Slack located?
Jonathan Slack practices at 9500 Euclid Ave L2 Office 216, Cleveland, OH 44195. The listed phone number is (216) 448-4899.
What is Jonathan Slack's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Pediatric Pathology, with taxonomy code 207ZP0213X.
Is Jonathan Slack enrolled in Medicare?
Yes. Jonathan Slack is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Jonathan Slack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jonathan Slack reassigns Medicare benefits to 2 organizations: The Cleveland Clinic Foundation (Cleveland, OH) and Wooster Clinic, LLC (Wooster, OH). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jonathan Slack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Jonathan Slack was last updated on March 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Jonathan Corwin Slack, MD · NPI 1487226387
Pediatric Pathology physician in Cleveland, Ohio. Individual provider, active in the CMS NPPES registry since July 12, 2021.
## Identity
- **NPI:** 1487226387 (Entity type: Individual)
- **Enumerated:** July 12, 2021
- **Primary specialty:** Pathology - Pediatric Pathology · taxonomy 207ZP0213X
- **State license:** 287182 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 9500 EUCLID AVE L2, OFFICE 216, Cleveland, OH 44195
- **Phone:** (216) 448-4899
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Cleveland Clinic Foundation (NPI 1679525919, Cleveland, OH); Wooster Clinic, LLC (NPI 1033135009, Wooster, OH) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** March 11, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1487226387) · Data from the CMS NPPES public registry.