MARGARET MACGREGOR M.D.
NPI 1679665541
Neurological Surgery in Nashville, TN
About Margaret Macgregor M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET MACGREGOR M.D. (NPI 1679665541) is an individual neurological surgery provider in Nashville, Tennessee, licensed in Tennessee (55149) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, is affiliated with Anmed Health, and is a graduate of Other (1992).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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
Margaret Macgregor M.d. 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
10Medicare enrollment records show Margaret Macgregor reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Nashville, TN 37205
- Reassigned Medicare billing, Tennessee enrollment
- 1,304 clinicians in this Medicare group
Goodlettsville, TN 37072
- Reassigned Medicare billing, Kentucky enrollment
- 4 clinicians in this Medicare group
Fair Play, SC 29643
- Reassigned Medicare billing, South Carolina enrollment
- 381 clinicians in this Medicare group
Montgomery, AL 36117
- Reassigned Medicare billing, Alabama enrollment
- 439 clinicians in this Medicare group
Troy, AL 36079
- Reassigned Medicare billing, Alabama enrollment
- 514 clinicians in this Medicare group
Bamberg, SC 29003
- Reassigned Medicare billing, South Carolina enrollment
- 2,389 clinicians in this Medicare group
Darlington, SC 29532
- Reassigned Medicare billing, South Carolina enrollment
- 878 clinicians in this Medicare group
Petoskey, MI 49770
- Reassigned Medicare billing, Michigan enrollment
- 149 clinicians in this Medicare group
Corpus Christi, TX 78404
- Reassigned Medicare billing, Texas enrollment
- 27 clinicians in this Medicare group
Corpus Christi, TX 78404
- Reassigned Medicare billing, Texas enrollment
- 130 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Anmed Health
Acute Care Hospitals · Anderson, SCMusc Health Florence Medical Center
Acute Care Hospitals · Florence, SCSaint Thomas Rutherford Hospital
Acute Care Hospitals · Murfreesboro, TNTristar Summit Medical Center
Acute Care Hospitals · Hermitage, TNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 37205 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 Margaret Macgregor's NPI number?
The NPI number for Margaret Macgregor is 1679665541. It was assigned to this individual provider in the NPPES registry on September 29, 2006.
Where is Margaret Macgregor located?
Margaret Macgregor practices at 3638 Richland Ave, Nashville, TN 37205. The listed phone number is (217) 652-6267.
What is Margaret Macgregor's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Margaret Macgregor enrolled in Medicare?
Yes. Margaret Macgregor 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 Margaret Macgregor's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Macgregor reassigns Medicare benefits to 10 organizations: Saint Thomas Medical Partners (Nashville, TN), Advanced Diagnostic Imaging, PC (Goodlettsville, TN), Anmed Health (Fair Play, SC), Health Care Authority For Baptist Health, An Affiliate Of Uabhs (Montgomery, AL), Houston County Healthcare Authority (Troy, AL) and 5 more organizations, listed in the Medicare section above. 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 Margaret Macgregor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Macgregor accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, BlueCross BlueShield of South Carolina and Cigna Healthcare and 6 other insurers list Margaret Macgregor as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Margaret Macgregor affiliated with any hospitals?
According to CMS data, Margaret Macgregor is affiliated with Anmed Health, Musc Health Florence Medical Center, Saint Thomas Rutherford Hospital and Tristar Summit Medical Center.
When was this NPI record last updated?
The NPPES record for Margaret Macgregor was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.