JOHN JOSEPH MACIEJEWSKI M.D.
NPI 1235334137
Internal Medicine - Hematology in Ann Arbor, MI
About John Joseph Maciejewski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN JOSEPH MACIEJEWSKI M.D. (NPI 1235334137) is an individual hematology provider in Ann Arbor, Michigan, licensed in Michigan (4301116418) and active in the NPI registry since June 2007. He is enrolled in Medicare PECOS, is affiliated with University Of Michigan Health System, and is a graduate of R Franklin University Of Med & Sci/chicago Medical School (2001).
NPPES Registry Identity
Specialties & Licenses 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Joseph Maciejewski M.d. 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.
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Michigan Health System
Acute Care Hospitals · Ann Arbor, MIPromedica Toledo Hospital
Acute Care Hospitals · Toledo, OHPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 48109 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
ANN ARBOR, MI 48109
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 John Maciejewski's NPI number?
The NPI number for John Maciejewski is 1235334137. It was assigned to this individual provider in the NPPES registry on June 19, 2007.
Where is John Maciejewski located?
John Maciejewski practices at 1500 E Medical Center Dr, Ann Arbor, MI 48109. The listed phone number is (734) 936-4000.
What is John Maciejewski's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology, with taxonomy code 207RH0000X.
Is John Maciejewski enrolled in Medicare?
Yes. John Maciejewski 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.
What insurance does John Maciejewski accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list John Maciejewski 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 John Maciejewski affiliated with any hospitals?
According to CMS data, John Maciejewski is affiliated with University Of Michigan Health System and Promedica Toledo Hospital.
When was this NPI record last updated?
The NPPES record for John Maciejewski was last updated on February 19, 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.
# John Joseph Maciejewski, M.D. · NPI 1235334137
Hematology physician in Ann Arbor, Michigan. Individual provider, active in the CMS NPPES registry since June 19, 2007.
## Identity
- **NPI:** 1235334137 (Entity type: Individual)
- **Enumerated:** June 19, 2007
- **Primary specialty:** Internal Medicine - Hematology · taxonomy 207RH0000X
- **State license:** 4301116418 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 E MEDICAL CENTER DR, Ann Arbor, MI 48109-5000
- **Phone:** (734) 936-4000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** R Franklin University Of Med & Sci/chicago Medical School, class of 2001
## Record status
- **NPPES last updated:** February 19, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1235334137) · Data from the CMS NPPES public registry.