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DR. CHRISTOPHER JOHN SHAMASS D.O.
NPI 1376807784
Emergency Medicine in Mount Clemens, MI

Active since June 29, 2012PECOS EnrolledAccepts Medicare Assignment
1000 HARRINGTON BOULEVARD, MOUNT CLEMENS, MI 48043(586) 493-8195(586) 493-3250 Get Directions Write a Review

NPPES record last updated: June 29, 2012. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Christopher John Shamass D.o. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHRISTOPHER JOHN SHAMASS D.O. (NPI 1376807784) is an individual emergency medicine provider in Mount Clemens, Michigan, licensed in Michigan (5101019938) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS, is affiliated with Mclaren Macomb, and is a graduate of Michigan State University College Of Osteopathic Medicine (2012).

NPPES Registry Identity

NPI1376807784
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. CHRISTOPHER JOHN SHAMASSCredential: D.O.
Location Address1000 HARRINGTON BOULEVARDMount Clemens, MI 48043
Mailing Address1000 Harrington BoulevardMount Clemens, MI 48043 · (586) 493-8195 · Fax (586) 493-3250
Phone(586) 493-8195
Fax(586) 493-3250
Sole ProprietorNo
Medical School CMSMichigan State University College Of Osteopathic MedicineGraduated 2012
Enumeration DateJune 29, 2012
✔ NPI 1376807784 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MI · 5101019938
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1000 HARRINGTON BOULEVARD, Mount Clemens, MI 48043
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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. Christopher John Shamass D.o. 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.

PECOS PAC ID6103145891
PECOS Enrollment IDI20150803000503
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Christopher Shamass reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Macomb Emergency Physicians PLLC
Same address
Emergency Medicine
1000 HARRINGTON ST
Mount Clemens, MI 48043
  • Reassigned Medicare billing, Michigan enrollment
  • 26 clinicians in this Medicare group
NPI 1609235217 (586) 493-8000
Observation Physicians Of Macomb PLLC
Same address
Emergency Medicine
1000 HARRINGTON ST
Mount Clemens, MI 48043
  • Reassigned Medicare billing, Michigan enrollment
  • 32 clinicians in this Medicare group
NPI 1144855941 (586) 493-8000

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.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
261 services249 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
91 services91 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
50 services46 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
12 services12 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mclaren Macomb

Acute Care Hospitals · Mount Clemens, MI
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230227
Location1000 Harrington StMount Clemens, MI 48043 · Macomb County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 48043 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$90.76 typical visit price
range $58.04 – $177.36
Typical copayment $22.69 (range $14.51 – $44.34)
Most-billed visit code 99203
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Christopher Shamass's NPI number?

The NPI number for Christopher Shamass is 1376807784. It was assigned to this individual provider in the NPPES registry on June 29, 2012.

Where is Christopher Shamass located?

Christopher Shamass practices at 1000 Harrington Boulevard, Mount Clemens, MI 48043. The listed phone number is (586) 493-8195.

What is Christopher Shamass's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Christopher Shamass enrolled in Medicare?

Yes. Christopher Shamass 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 Christopher Shamass's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Shamass reassigns Medicare benefits to 2 organizations: Macomb Emergency Physicians PLLC (Mount Clemens, MI) and Observation Physicians Of Macomb PLLC (Mount Clemens, 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 Christopher Shamass's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Christopher Shamass affiliated with any hospitals?

According to CMS data, Christopher Shamass is affiliated with Mclaren Macomb.

When was this NPI record last updated?

The NPPES record for Christopher Shamass was last updated on June 29, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.