DR. EMILY ANN HAMMER DO
NPI 1306189519
Emergency Medicine in Grand Blanc, MI
About Dr. Emily Ann Hammer Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EMILY ANN HAMMER DO (NPI 1306189519) is an individual emergency medicine provider in Grand Blanc, Michigan, licensed in Michigan (5101020254) and active in the NPI registry since April 2013. She is enrolled in Medicare PECOS, is affiliated with Ascension Genesys Hospital, and is a graduate of Michigan State University College Of Osteopathic Medicine (2013).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Emily Ann Hammer Do 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 Emily Hammer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Blanc, MI 48439
- Reassigned Medicare billing, Michigan enrollment
- 41 clinicians in this Medicare group
Grand Blanc, MI 48439
- Reassigned Medicare billing, Michigan enrollment
- 43 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Ascension Genesys Hospital
Acute Care Hospitals · Grand Blanc, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48439 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.
GRAND BLANC, MI 48439
GRAND BLANC, MI 48439
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 Emily Hammer's NPI number?
The NPI number for Emily Hammer is 1306189519. It was assigned to this individual provider in the NPPES registry on April 5, 2013.
Where is Emily Hammer located?
Emily Hammer practices at 1 Genesys Pkwy, Grand Blanc, MI 48439. The listed phone number is (810) 606-6372.
What is Emily Hammer's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Emily Hammer enrolled in Medicare?
Yes. Emily Hammer 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 Emily Hammer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Emily Hammer reassigns Medicare benefits to 2 organizations: Emergency Medicine Physicians Of Genesee County, PLLC (Grand Blanc, MI) and Observation Medicine Group PLLC (Grand Blanc, MI). 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 Emily Hammer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Emily Hammer accept?
Health plans from Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Emily Hammer 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 Emily Hammer affiliated with any hospitals?
According to CMS data, Emily Hammer is affiliated with Ascension Genesys Hospital.
When was this NPI record last updated?
The NPPES record for Emily Hammer was last updated on April 1, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Emily Ann Hammer, DO · NPI 1306189519
Emergency Medicine physician in Grand Blanc, Michigan. Individual provider, active in the CMS NPPES registry since April 5, 2013.
## Identity
- **NPI:** 1306189519 (Entity type: Individual)
- **Enumerated:** April 5, 2013
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 5101020254 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 GENESYS PKWY, Grand Blanc, MI 48439-8065
- **Phone:** (810) 606-6372
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Emergency Medicine Physicians Of Genesee County, PLLC (NPI 1275899171, Grand Blanc, MI); Observation Medicine Group PLLC (NPI 1194084111, Grand Blanc, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Michigan State University College Of Osteopathic Medicine, class of 2013
## Record status
- **NPPES last updated:** April 1, 2016
---
Source: [NPI Profile](https://npiprofile.com/npi/1306189519) · Data from the CMS NPPES public registry.