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MARY KATHERINE GRANT APRN, CNM
NPI 1477313658
Advanced Practice Midwife in Chattanooga, TN

Active since March 22, 2024PECOS EnrolledAccepts Medicare Assignment
1511 GUNBARREL RD STE 111, CHATTANOOGA, TN 37421(423) 553-5999 Get Directions Write a Review

NPPES record last updated: April 20, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mary Katherine Grant Aprn, Cnm NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARY KATHERINE GRANT APRN, CNM (NPI 1477313658) is an individual advanced practice midwife in Chattanooga, Tennessee, licensed in Tennessee (35851) and active in the NPI registry since March 2024. She is enrolled in Medicare PECOS and is a graduate of Other (2024).

NPPES Registry Identity

NPI1477313658
Entity TypeIndividualFemale
Primary Taxonomy367A00000X
Provider Legal NameMARY KATHERINE GRANTCredential: APRN, CNM
Location Address1511 GUNBARREL RD STE 111Chattanooga, TN 37421-3897
Mailing Address1511 Gunbarrel Rd Ste 111Chattanooga, TN 37421-3897 · (423) 553-5999
Phone(423) 553-5999
Sole ProprietorYes
Medical School CMSOtherGraduated 2024
Enumeration DateMarch 22, 2024
Last NPPES UpdateApril 20, 2026
NPPES CertifiedApril 20, 2026
✔ NPI 1477313658 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAdvanced Practice MidwifePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367A00000X
License✔ Licensed in TN · 35851
Definition
Advanced practice midwifery encompasses the independent provision of care during pregnancy, childbirth, and the postpartum period; sexual and reproductive health; gynecologic health; and family planning services, including preconception care. Midwives also provide primary care for individuals from adolescence throughout the lifespan as well as care for the healthy newborn during the first 28 days of life. Midwives provide initial and ongoing comprehensive assessment, diagnosis, and treatment. Midwifery care includes health promotion, disease prevention, risk assessment and management, and individualized wellness education and counseling. Source: American College of Nurse-Midwives, www.midwife.org Additional Resources: See the American College of Nurse-Midwives, www.midwife.org, for more information on Certified Nurse-Midwives, Certified Midwives, the American Midwifery Certification Board (AMCB), and licensure.
Also ListedMidwifeTaxonomy 176B00000X · License 35851 (TN)
1511 GUNBARREL RD STE 111, Chattanooga, TN 37421
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Cigna Healthcare, UnitedHealthcare.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

Mary Katherine Grant Aprn, 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.

PECOS PAC ID4082184494
PECOS Enrollment IDI20260527002504
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Mary Grant reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Diana Health Tn, PC
103 mi
Obstetrics & Gynecology
300 STONECREST BLVD STE 310
Smyrna, TN 37167
  • Reassigned Medicare billing, Tennessee enrollment
  • 109 clinicians in this Medicare group
NPI 1457020844 (629) 206-6858

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 37421 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$81.53 typical visit price
range $52.64 – $160.89
Typical copayment $20.38 (range $13.16 – $40.22)
Most-billed visit code 99203
Established Patient
$66.01 typical visit price
range $16.72 – $131.41
Typical copayment $16.50 (range $4.18 – $32.85)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LYDIA JEANETTE VAN DYKE APRN CNM
Advanced Practice Midwife
1511 GUNBARREL RD STE 111
CHATTANOOGA, TN 37421
Hamilton County (423) 266-6116
LIBBY COMBS FNP-BC
Nurse Practitioner (Family)
1511 GUNBARREL RD STE 111
CHATTANOOGA, TN 37421
Hamilton County (423) 553-5999
MR. JACK M. ROWLAND MD
Obstetrics & Gynecology
1511 GUNBARREL RD STE 111
CHATTANOOGA, TN 37421
Hamilton County (423) 553-5999
AUTUMN J. HOLMES MSN, NP-C
Nurse Practitioner
1511 GUNBARREL RD STE 111
CHATTANOOGA, TN 37421
Hamilton County (423) 553-5999
JACK M ROWLAND, MD, LLC
Obstetrics & Gynecology
1511 GUNBARREL RD STE 111
CHATTANOOGA, TN 37421
Hamilton County (423) 553-5999
DR. KREG GOSTA JONSON M.D.
Obstetrics & Gynecology (Obstetrics)
1511 GUNBARREL RD STE 111
CHATTANOOGA, TN 37421
Hamilton County (423) 553-5999
COURTNEY STONE APRN, FNP-C
Nurse Practitioner (Family)
1511 GUNBARREL RD STE 111
CHATTANOOGA, TN 37421
Hamilton County (423) 553-5999

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 Mary Grant's NPI number?

The NPI number for Mary Grant is 1477313658. It was assigned to this individual provider in the NPPES registry on March 22, 2024.

Where is Mary Grant located?

Mary Grant practices at 1511 Gunbarrel Rd Ste 111, Chattanooga, TN 37421. The listed phone number is (423) 553-5999.

What is Mary Grant's specialty?

The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.

Is Mary Grant enrolled in Medicare?

Yes. Mary Grant 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 organization bills Medicare for Mary Grant's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Grant reassigns Medicare benefits to Diana Health Tn, PC (Smyrna, TN). The 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 Mary Grant's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mary Grant accept?

Health plans from Alliant Health Plans, Inc., Cigna Healthcare and UnitedHealthcare list Mary Grant 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.

When was this NPI record last updated?

The NPPES record for Mary Grant was last updated on April 20, 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.