Christopher J Kreiner, MD
Emergency Medicine · Cass City, MI
At a glance
4675 Hill St, Cass City, MI 48726-1008
NPPES record updated Nov 18, 2022. Public records can lag behind changes at a practice.
Before you call: a quick checklist
- Are you accepting new patients?
- Do you accept my specific insurance plan?
- Do you provide the service I need at this address?
- Do I need a referral, and what is the earliest appointment?
Insurance participation and appointment availability are not established by these public records.
Medicare & insurance
Insurance participation is not established by these public records. Ask the practice and your insurer about your specific plan and this location.
How to check your coverage
Use your plan’s provider directory or the member-services number on your insurance card. Confirm the clinician, practice address, service, and whether a referral is required. A missing opt-out record does not establish Medicare acceptance.
Check the official Medicare directory ↗Practice location
4675 Hill StCass City, MI 48726-1008
Additional reported practice locations
3559 Pine StDeckerville, MI 484277703
Phone: 8103762835 3601 W 13 Mile Rd
Royal Oak, MI 480736712
Phone: 2485510424
Fax: 2485515426
Education & affiliations
- Medical / professional school
- Michigan State University College Of Human Medicine
- Graduation year
- 2006
- CMS specialties
- Emergency Medicine
Practice groups
Reported hospital affiliations
- Deckerville Community Hospital Deckerville, MI
- Hills & Dales General Hospital Cass City, MI
Graduation year does not establish years in practice. A reported affiliation does not establish employment, current admitting privileges, or insurance participation.
Source: CMS National Downloadable File · Published Oct 15, 2026.
Source: CMS Facility Affiliation Data · Published Oct 15, 2026.
Procedures in the public data
Reported activity can help you ask more informed questions about a practice’s services.
No displayed procedure-category record in this release. This does not mean the clinician performs no procedures.
CMS uses a one-year claims window with a reporting lag. Counts cover the Medicare activity included by CMS, not all patients. “1–10” is a published range. Volume is not a quality or outcomes score. Coverage and methodology
Source: CMS Utilization Data · Published Oct 15, 2026.
Service-mix comparison is unavailable for this NPI in the imported Medicare service file.
Industry-reported general payments
No matching general-payment summary in the imported release. This is not a verified zero and does not rule out other payment types or years.
Source: CMS 2025 payments grouped by covered recipient and nature of payments · Published Jun 30, 2026.
Professional details: NPI, taxonomy & registry record
Registry details
- Primary taxonomy
- Emergency Medicine
- Taxonomy code
- 207P00000X
- Enumeration date
- May 11, 2007
- Record updated
- Nov 18, 2022
More registry details
- Provider type
- Individual · Type 1
- Reported credentials
- MD
Reported taxonomies and licenses
207P00000X · Primary
License reported: 4301087653 MI
License numbers and credentials are reported to NPPES; HCPList does not independently verify them.
Practice location
4675 Hill StCass City, MI 48726-1008
- Phone
- (989) 872-6227
Mailing address
3601 W 13 MILE RDROYAL OAK, MI 480736712
Information may be outdated or incomplete. Confirm details directly with the practice. HCPList is an independent directory and is not affiliated with CMS.
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