Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Margaret Courtney Holtz, MD

Individual provider Pediatric Anesthesiology Physician · NPI 1477738300

Margaret Courtney Holtz, MD practises Anesthesiology in Marietta, Georgia. Graduated from University of Virginia School of Medicine in 2005, 21 years ago. Practices with Mak Anesthesia Holdings, LLC, a 368-clinician group and works from 5 locations. Licensed in Georgia.

Years since qualifying
21
Trained at
University of Virginia School of Medicine
Licensed in
GA
In the registry since
2008
Specialties on file
5
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

677 Church St NE
Marietta, GA 30060-1101
Phone: (770) 794-0477
Fax: (770) 794-3108
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 8954 Hospital Dr, Douglasville, GA 30134-2272 — (770) 794-0477
  • 146 Bill Carruth Pkwy, Hiram, GA 30141-3749 — (770) 794-0477
  • 531 Roselane St Nw Ste 830, Marietta, GA 30060-6979 — (770) 794-0477
  • 2540 Windy Hill Rd Se, Marietta, GA 30067-8605 — (770) 794-0477

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 001441 (GA)
Pediatric Anesthesiology Physician Taxonomy 207LP3000X · Licence 061896 (GA)
Pain Medicine (Anesthesiology) Physician Taxonomy 207LP2900X · Licence 061896 (GA)
Pain Medicine Physician Taxonomy 208VP0000X · Licence 061896 (GA)
Interventional Pain Medicine Physician Taxonomy 208VP0014X · Licence 061896 (GA)

Record details

NPI number1477738300
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 9, 2008
Last updated in NPPESAugust 28, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF VIRGINIA SCHOOL OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Mak Anesthesia Holdings, Llc — 368 clinicians
Accepts Medicare assignment Not indicated
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients272
Services billed 667 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Honoraria $42,160 12 payments
Travel and Lodging $13,853 57 payments · travel or lodging paid or reimbursed, such as to attend a conference
Consulting Fee $6,670 5 payments
Food and Beverage $1,911 47 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Wellstar Kennestone Regional Medical Center Hospital · Marietta, GA

Colleagues at Mak Anesthesia Holdings, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 368 clinicians in the practice; 12 are shown here.

Other providers in Marietta