NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1376807784 D.O.
Verify on CMS → Christopher Shamass, D.O.
Emergency Medicine Physician in Mount Clemens, Michigan.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 64,463 in Emergency Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
75
Medicare Part D claims · 46 beneficiaries · Emergency Medicine Physician avg: 352
Industry payments
$122.93
2 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Christopher Shamass, D.O. filed 75 Medicare Part D claims in 2023 as an Emergency Medicine Physician in Mount Clemens, Michigan.
- 75
- Part D claims, 2023
- Likely
- board-certified (heuristic)
- ≥0th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Christopher Shamass, D.O.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1376807784), first enumerated 06/29/2012.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 75 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
2 CMS Care Compare hospital affiliations on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$122.93 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Michigan statewide board action statistics are published annually — these figures describe aggregate state activity, not Christopher Shamass, D.O.'s individual license status. Verify directly with the state medical board.
Source: MI-BOM annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1376807784 · Emergency Medicine Physician
NPI-10 · ENUM-MID · TAX-MEGA · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1376807784
- ENUM-MID 2012
- TAX-MEGA 64K Emergency Medicine
- RX-TRACE 75
- BOOK-LIGHT 2,648 in Michigan
- PHOTO-ENUM Lora Alkhawam · 2012
Christopher Shamass, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
75 ≥ 0th percentile 0% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Christopher Shamass, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Christopher Shamass, D.O.?
Quality data not reportedPrimary specialty
Emergency Medicine Physician
Medicare Part D claims
75 79% vs specialty avg
Specialty distribution in Michigan
How Emergency Medicine Physician compares to other specialties among Michigan providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Emergency Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1376807784 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 06/29/2012 |
Hospital and facility affiliations
Facilities where Christopher Shamass, D.O. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Macomb Emergency Physicians PLLC
Mount Clemens, MI
Observation Physicians OF Macomb PLLC
Mount Clemens, MI
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Christopher Shamass, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$123
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Michigan MI-BOM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~41K Michigan medical licensees in 2023 - they are NOT specific to Christopher Shamass, D.O.. To verify Christopher Shamass, D.O.'s current license status, search the MI-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
123
Total board actions, Michigan 2023
Across 120 cases
3.00
Actions per 1,000 licensees
Michigan statewide rate
probation
Most common action type
44 cases
MI-BOM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Michigan disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
75
Total Claims
$490
Total Drug Cost
46
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 75
- Total Day Supply
- 547
- Generic Drug Cost
- $426
- Antibiotic Claims
- 25
Patient Demographics
- Average Patient Age
- 65.0 years
- Avg HCC Risk Score
- 1.70
- Gender Split
- 46% female / 54% male
- Age Distribution
- <65: 14, 65-74: 18, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Cephalexin | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Emergency Medicine Physician Overview
How Christopher Shamass, D.O. fits within the Emergency Medicine Physician landscape nationally.
64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider
Christopher Shamass, D.O.'s 75 claims are below the specialty average of 352.
Nationwide Emergency Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Shamass, both outside Michigan so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2012)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Emergency Medicine Physician Providers in Michigan
Other clinicians with the same primary specialty enrolled in Michigan, drawn from the same CMS NPPES roster as Shamass.
One of 2,648 Emergency Medicine Physician providers enrolled in Michigan, 5 are shown here.
Dr. Melanie Aaberg
DO
Trenton, MI
Dr. Sydney Abass
MD
Trenton, MI
Danya Abbas
Lenox, MI
Dr. Saiyeda Abbas
M.D.
Farmington Hills, MI
Dr. Nazer Abdel Fattah
D.O
Allen Park, MI
Compare Emergency Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Christopher Shamass, D.O.'s specialty? ▼
Christopher Shamass, D.O. specializes in Emergency Medicine Physician and practices in Mount Clemens, Michigan. Credentials: D.O..
How much does Christopher Shamass, D.O. prescribe under Medicare Part D? ▼
In 2023, Christopher Shamass, D.O. wrote 75 Medicare Part D claims totaling $490 in drug costs for 46 beneficiaries.
Where is Christopher Shamass, D.O. located? ▼
Christopher Shamass, D.O. is located at 1000 HARRINGTON BOULEVARD, Mount Clemens, MI, 48043. Phone: (586) 493-8195.
What is Christopher Shamass, D.O.'s NPI number? ▼
Christopher Shamass, D.O.'s National Provider Identifier (NPI) is 1376807784, issued on 06/29/2012.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does Christopher Shamass, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Christopher Shamass, D.O.'s most frequently prescribed drugs include Cephalexin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Christopher Shamass, D.O. accept Medicare? ▼
Christopher Shamass, D.O. appears in CMS Medicare data with 75 Part D claims and 46 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Christopher Shamass, D.O.'s credentials? ▼
Christopher Shamass, D.O.'s NPI is 1376807784 with credentials D.O.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.