MICHAEL C SLACK MD
NPI 1588758940
Pediatrics - Pediatric Cardiology in Baltimore, MD
About Michael C Slack Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL C SLACK MD (NPI 1588758940) is an individual pediatric cardiology provider in Baltimore, Maryland, licensed in Maryland (D55380) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with University Of Maryland Medical Center, and is a graduate of Uniformed Services Uhs Fe Hebert School Of Med (1983).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 8
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
Michael C 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
3Medicare enrollment records show Michael Slack reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Baltimore, MD 21201
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: University Of Maryland Pediatric Associates, PA
- 172 clinicians in this Medicare group
Baltimore, MD 21239
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 277 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Maryland Medical Center
Acute Care Hospitals · Baltimore, MDMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21201
BALTIMORE, MD 21201
BALTIMORE, MD 21201
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 Michael Slack's NPI number?
The NPI number for Michael Slack is 1588758940. It was assigned to this individual provider in the NPPES registry on October 2, 2006.
Where is Michael Slack located?
Michael Slack practices at 22 S Greene St N5w70c, Baltimore, MD 21201. The listed phone number is (410) 328-2427.
What is Michael Slack's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Michael Slack enrolled in Medicare?
Yes. Michael 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 Michael Slack's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Slack reassigns Medicare benefits to 3 organizations: University Of Maryland Pediatric Assoc PA (Baltimore, MD), Medstar Medical Group II LLC (Baltimore, MD) and Medstar Heart Institute LLC (Washington, DC). 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 Michael Slack's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Michael Slack affiliated with any hospitals?
According to CMS data, Michael Slack is affiliated with University Of Maryland Medical Center.
When was this NPI record last updated?
The NPPES record for Michael Slack was last updated on January 5, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Michael C Slack, MD · NPI 1588758940
Pediatric Cardiology physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since October 2, 2006.
## Identity
- **NPI:** 1588758940 (Entity type: Individual)
- **Enumerated:** October 2, 2006
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** D55380 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 22 S GREENE ST, N5W70C, Baltimore, MD 21201-1544
- **Phone:** (410) 328-2427 · **Fax:** (443) 462-3137
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): University Of Maryland Pediatric Assoc PA (NPI 1174628580, Baltimore, MD); Medstar Medical Group II LLC (NPI 1184046187, Baltimore, MD); Medstar Heart Institute LLC (NPI 1528345378, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Uniformed Services Uhs Fe Hebert School Of Med, class of 1983
## Record status
- **NPPES last updated:** January 5, 2015
- **Other identifiers:** Medicaid 202009200 (MD); Medicare UPIN F83329; Medicare ID-Type Unspecified 010842C95; and 5 more
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Source: [NPI Profile](https://npiprofile.com/npi/1588758940) · Data from the CMS NPPES public registry.