GRETCHEN LEE HAHN CNM
NPI 1245284926
Advanced Practice Midwife in Charleston, SC
About Gretchen Lee Hahn Cnm NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRETCHEN LEE HAHN CNM (NPI 1245284926) is an individual advanced practice midwife in Charleston, South Carolina, licensed in South Carolina (2815) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Musc Medical Center, and is a graduate of Other (2006).
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
Gretchen Lee Hahn 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 Gretchen Hahn reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Charleston, SC 29425
- Reassigned Medicare billing, South Carolina enrollment
- 357 clinicians in this Medicare group
Charleston, SC 29425
- Reassigned Medicare billing, South Carolina enrollment
- 2,594 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.
Musc Medical Center
Acute Care Hospitals · Charleston, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29425 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
CHARLESTON, SC 29425
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 Gretchen Hahn's NPI number?
The NPI number for Gretchen Hahn is 1245284926. It was assigned to this individual provider in the NPPES registry on May 19, 2006.
Where is Gretchen Hahn located?
Gretchen Hahn practices at 171 Ashley Ave, Charleston, SC 29425. The listed phone number is (843) 792-1414.
What is Gretchen Hahn's specialty?
The primary specialty registered for this NPI is Advanced Practice Midwife with taxonomy code 367A00000X.
Is Gretchen Hahn enrolled in Medicare?
Yes. Gretchen Hahn 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 Gretchen Hahn's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Hahn reassigns Medicare benefits to 2 organizations: Medical University Hospital Authority (Charleston, SC) and University Medical Associates Of The Medical University Of South Carol (Charleston, SC). 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 Gretchen Hahn's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gretchen Hahn accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, BlueCross BlueShield of South Carolina and First Choice Next and 1 other insurer list Gretchen Hahn 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 Gretchen Hahn affiliated with any hospitals?
According to CMS data, Gretchen Hahn is affiliated with Musc Medical Center.
When was this NPI record last updated?
The NPPES record for Gretchen Hahn was last updated on October 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.
# Gretchen Lee Hahn, CNM · NPI 1245284926
Advanced Practice Midwife physician in Charleston, South Carolina. Individual provider, active in the CMS NPPES registry since May 19, 2006.
## Identity
- **NPI:** 1245284926 (Entity type: Individual)
- **Enumerated:** May 19, 2006
- **Primary specialty:** Advanced Practice Midwife · taxonomy 367A00000X
- **State license:** 2815 (South Carolina)
- **Sole proprietor:** No
## Practice location
- **Address:** 171 ASHLEY AVE, Charleston, SC 29425-8908
- **Phone:** (843) 792-1414
## 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): Medical University Hospital Authority (NPI 1255305876, Charleston, SC); University Medical Associates Of The Medical University Of South Carol (NPI 1013934629, Charleston, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** October 21, 2020
- **Other identifiers:** Medicaid MW0158 (SC)
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Source: [NPI Profile](https://npiprofile.com/npi/1245284926) · Data from the CMS NPPES public registry.