MARY GREELEY MEDICAL CENTER
NPI 1720946536
General Practice in Ames, IA
About Mary Greeley Medical Center NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY GREELEY MEDICAL CENTER (NPI 1720946536), doing business as Mary Greeley Medical Group, is a healthcare organization registered as a general practice in Ames, Iowa and active in the NPI registry since January 2026. The organization lists Amber Deardorff, President/ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 11
Other Names 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mary Greeley Medical Center is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
42Medicare enrollment records show 42 clinicians reassign Medicare billing to Mary Greeley Medical Center, which bills Medicare for the services they deliver. Of these, 16 practice at this address and 19 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 11
Nearest to this location (20)
See all 42Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Greeley Medical Center's NPI number?
The NPI number for Mary Greeley Medical Center is 1720946536. It was assigned to this organization in the NPPES registry on January 12, 2026. The provider is doing business as Mary Greeley Medical Group.
Where is Mary Greeley Medical Center located?
Mary Greeley Medical Center is located at 1111 Duff Ave, Ames, IA 50010. The listed phone number is (515) 239-2011.
What is Mary Greeley Medical Center's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Mary Greeley Medical Center enrolled in Medicare?
Yes. Mary Greeley Medical Center is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Mary Greeley Medical Center?
According to the CMS Revalidation Reassignment List (October 2026 release), 42 clinicians in 11 Medicare specialties reassign their Medicare billing to Mary Greeley Medical Center. A 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 the clinician's services. The largest specialties are Nurse Practitioner (12), Neurology (11) and Psychiatry (6). Of these, 16 practice at this address and 19 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Mary Greeley Medical Center was last updated on July 6, 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.
# Mary Greeley Medical Center · NPI 1720946536
General Practice organization in Ames, Iowa. Organization record, active in the CMS NPPES registry since January 12, 2026.
## Identity
- **NPI:** 1720946536 (Entity type: Organization)
- **Enumerated:** January 12, 2026
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **Also known as:** Mary Greeley Medical Group (Doing Business As)
- **Organization subpart:** Yes (part of Mary Greeley Medical Center)
- **Authorized official:** Amber Deardorff, PRESIDENT/CEO
## Practice location
- **Address:** 1111 DUFF AVE, Ames, IA 50010-5745
- **Phone:** (515) 239-2011
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 42 clinicians in 11 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (12), Neurology (11), Psychiatry (6); 16 practice at this address and 19 within 10 miles; [full list](https://npiprofile.com/npi/1720946536/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 6, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1720946536) · Data from the CMS NPPES public registry.