DR. MARK KREIMER DO
NPI 1255735221
Emergency Medicine in Brooklyn, NY
About Dr. Mark Kreimer Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARK KREIMER DO (NPI 1255735221) is an individual emergency medicine provider in Brooklyn, New York, licensed in New York (288572) and active in the NPI registry since October 2014. He is enrolled in Medicare PECOS, is affiliated with Boca Raton Regional Hospital, and is a graduate of New York College Of Osteo Medicine Of New York Institute Of Technology (2014).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Dr. Mark Kreimer 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
12Medicare enrollment records show Mark Kreimer reassigns Medicare billing to 12 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Brooklyn, NY 11215
- Reassigned Medicare billing, New York enrollment
- 1,029 clinicians in this Medicare group
Middle Village, NY 11379
- Reassigned Medicare billing, New York enrollment
- 69 clinicians in this Medicare group
New Hyde Park, NY 11040
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
Englewood, NJ 07631
- Reassigned Medicare billing, New Jersey enrollment
- 28 clinicians in this Medicare group
Livingston, NJ 07039
- Reassigned Medicare billing, New Jersey enrollment
- 1,913 clinicians in this Medicare group
Yonkers, NY 10701
- Reassigned Medicare billing, New York enrollment
- 130 clinicians in this Medicare group
Dobbs Ferry, NY 10522
- Reassigned Medicare billing, New York enrollment
- 61 clinicians in this Medicare group
Somerset, NJ 08873
- Reassigned Medicare billing, New Jersey enrollment
- 1,557 clinicians in this Medicare group
Poughkeepsie, NY 12601
- Reassigned Medicare billing, New York enrollment
- 235 clinicians in this Medicare group
Birmingham, AL 35205
- Reassigned Medicare billing, Florida enrollment
- 802 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 5
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Boca Raton Regional Hospital
Acute Care Hospitals · Boca Raton, FLSteward Palmetto General Hospital
Acute Care Hospitals · Hialeah, FLLenox Hill Hospital
Acute Care Hospitals · New York, NYSt John's Riverside Hospital
Acute Care Hospitals · Yonkers, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11215 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Mark Kreimer's NPI number?
The NPI number for Mark Kreimer is 1255735221. It was assigned to this individual provider in the NPPES registry on October 20, 2014. The provider is also known as Dr. Mark Kreimer D.O..
Where is Mark Kreimer located?
Mark Kreimer practices at Nyp: Brooklyn Methodist Hospital Department Of Em 506 6th Street, Brooklyn, NY 11215. The listed phone number is (718) 780-5040.
What is Mark Kreimer's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mark Kreimer enrolled in Medicare?
Yes. Mark Kreimer 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 Mark Kreimer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Kreimer reassigns Medicare benefits to 12 organizations: Kings Physician Services, PC (Brooklyn, NY), Josef Schenker MD PC (Middle Village, NY), North Shore - Lij Medical PC (New Hyde Park, NY), Emergency Physicians Of Englewood, PC (Englewood, NJ), Rwjbh Observation Associates LLC (Livingston, NJ) and 7 more organizations, listed in the Medicare section above. 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 Mark Kreimer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mark Kreimer accept?
Health plans from Molina Healthcare list Mark Kreimer 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 Mark Kreimer affiliated with any hospitals?
According to CMS data, Mark Kreimer is affiliated with Boca Raton Regional Hospital, Steward Palmetto General Hospital, Lenox Hill Hospital and St John's Riverside Hospital.
When was this NPI record last updated?
The NPPES record for Mark Kreimer was last updated on October 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Dr. Mark Kreimer, DO · NPI 1255735221
Emergency Medicine physician in Brooklyn, New York. Individual provider, active in the CMS NPPES registry since October 20, 2014.
## Identity
- **NPI:** 1255735221 (Entity type: Individual)
- **Enumerated:** October 20, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 288572 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** NYP: BROOKLYN METHODIST HOSPITAL DEPARTMENT OF EM, 506 6TH STREET, Brooklyn, NY 11215
- **Phone:** (718) 780-5040
## 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:** 12 organizations under Medicare reassignment (form CMS-855R): Kings Physician Services, PC (NPI 1326698879, Brooklyn, NY); Josef Schenker MD PC (NPI 1275936932, Middle Village, NY); North Shore - Lij Medical PC (NPI 1790043479, New Hyde Park, NY); Emergency Physicians Of Englewood, PC (NPI 1891046264, Englewood, NJ); Rwjbh Observation Associates LLC (NPI 1760095806, Livingston, NJ); and 7 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York College Of Osteo Medicine Of New York Institute Of Technology, class of 2014
## Record status
- **NPPES last updated:** October 28, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1255735221) · Data from the CMS NPPES public registry.