MRS. KAREN ANNE MACKINNON CNM
NPI 1346384328
Advanced Practice Midwife in Westminster, MD
About Mrs. Karen Anne Mackinnon Cnm NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. KAREN ANNE MACKINNON CNM (NPI 1346384328) is an individual advanced practice midwife in Westminster, Maryland, licensed in Maryland (R130497) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS, is affiliated with Johns Hopkins Hospital, The, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
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
Mrs. Karen Anne Mackinnon Cnm 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 Karen Mackinnon reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Lutherville, MD 21093
- Reassigned Medicare billing, Maryland and District of Columbia enrollments
- Also billed through NPI 1255359972 (District of Columbia)
- 952 clinicians in this Medicare group
Fulton, MD 20759
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Capital Womens Care LLC
- 167 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.
Johns Hopkins Hospital, The
Acute Care Hospitals · Baltimore, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21157 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare 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.
WESTMINSTER, MD 21157
WESTMINSTER, MD 21157
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 Karen Mackinnon's NPI number?
The NPI number for Karen Mackinnon is 1346384328. It was assigned to this individual provider in the NPPES registry on February 16, 2007. The provider is also known as Karen Anne Sullivan Cnm.
Where is Karen Mackinnon located?
Karen Mackinnon practices at 844 Washington Rd Ste 302, Westminster, MD 21157. The listed phone number is (410) 848-6294.
What is Karen Mackinnon's specialty?
The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.
Is Karen Mackinnon enrolled in Medicare?
Yes. Karen Mackinnon 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 Karen Mackinnon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Mackinnon reassigns Medicare benefits to 2 organizations: Johns Hopkins Community Physicians, Inc (Lutherville, MD) and Capital Women's Care, L.L.C. (Fulton, MD). 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 Karen Mackinnon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Karen Mackinnon affiliated with any hospitals?
According to CMS data, Karen Mackinnon is affiliated with Johns Hopkins Hospital, The.
When was this NPI record last updated?
The NPPES record for Karen Mackinnon was last updated on April 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.
# Mrs. Karen Anne Mackinnon, CNM · NPI 1346384328
Advanced Practice Midwife physician in Westminster, Maryland. Individual provider, active in the CMS NPPES registry since February 16, 2007.
## Identity
- **NPI:** 1346384328 (Entity type: Individual)
- **Enumerated:** February 16, 2007
- **Primary specialty:** Advanced Practice Midwife · taxonomy 367A00000X
- **State license:** R130497 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 844 WASHINGTON RD STE 302, Westminster, MD 21157
- **Phone:** (410) 848-6294 · **Fax:** (410) 848-3009
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Johns Hopkins Community Physicians, Inc (NPI 1134940299, Lutherville, MD); Capital Women's Care, L.L.C. (NPI 1679534069, Fulton, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2001
## Record status
- **NPPES last updated:** April 9, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1346384328) · Data from the CMS NPPES public registry.