Dr. Christopher John Shamass, DO
- Medicare services, 2024
- 414
- Medicare patients, 2024
- 393
- Part D claims, 2024
- 82
- Hospital affiliations
- 1
- Industry payments
- $891
- Practice address
- 1000 Harrington St, Mount Clemens, MI 48043
- Practice phone
- Call (586) 493-8000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
McLaren Macomb Hospital
Mount Clemens, Michigan
Find Dr. Shamass' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Christopher John Shamass is an emergency medicine physician in Mount Clemens, Michigan
Dr. Shamass practices at McLaren Macomb Hospital in Mount Clemens, Michigan.
Dr. Shamass' NPI, 1376807784, was assigned on June 29, 2012. Dr. Shamass graduated from Michigan State University College of Osteopathic Medicine in 2012. Dr. Shamass holds Michigan license 5101019938.
- NPI
- 1376807784NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6103145891
- NPI enumeration date
- June 29, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (586) 493-8000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher John Shamass practices at McLaren Macomb Hospital in Mount Clemens, Michigan
Dr. Shamass' primary practice is McLaren Macomb Hospital, at 1000 Harrington St, Mount Clemens, MI 48043 in Macomb County. The practice phone is (586) 493-8000.
- McLaren Macomb Hospital1000 Harrington St, Mount Clemens, MI 48043 · Macomb CountyPhone(586) 493-8000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Christopher John Shamass is affiliated with 2 sites of care and 2 medical groups
Dr. Shamass' primary practice is McLaren Macomb Hospital in Mount Clemens, Michigan. Dr. Shamass is also affiliated with McLaren Macomb. The medical group on file is Observation Physicians of Macomb. Dmand AI also links Dr. Shamass to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher John Shamass' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Shamass practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| McLaren Macomb Hospital | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Christopher John Shamass is one of 2,045 emergency medicine physicians in Michigan
Emergency medicine is Dr. Shamass' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Shamass is licensed in Michigan.
Specialties and state licenses
- Emergency medicine, MichiganPrimary
Emergency medicine physicians near Dr. Shamass
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Christopher John Shamass billed Medicare for 414 services in 2024
CMS data shows 414 Medicare services from Dr. Shamass across 4 procedure codes in 2024, for 393 Medicare patients. Medicare paid $57,761 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Shamass' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4332024: 4144%
- Surgery
- 2023: 112024: 0100%
Dr. Shamass compared with the Michigan median for emergency medicine physicians, 2024
- Dr. Shamass
- Michigan median
- Medicare services
- 414vs 23477% above
- Medicare patients
- 393vs 21484% above
- Part D claims
- 16vs 4665% below
Medians across 1,937 emergency medicine physicians in Michigan with Dmand AI profiles that report each measure.
Dr. Shamass' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Shamass and other emergency medicine physicians in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Christopher John Shamass treated 393 Medicare patients in 2024, average age 72
CMS counts 393 Medicare patients who saw Dr. Shamass in 2024. The largest group is 75 to 84, with 122 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.08, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Shamass' median patient age at 65, with 53% women.
Dr. Shamass' Medicare patients by age, 2024
Dr. Shamass' Medicare patients by sex, 2024
- Women22858%
- Men16542%
Chronic conditions among Dr. Shamass' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis53%
- Anxiety51%
- Ischemic heart disease48%
- Mood disorders46%
- Diabetes42%
- Depression39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Shamass' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christopher John Shamass wrote 82 Medicare Part D claims in 2024
In 2024, Dr. Shamass wrote 82 Medicare Part D claims for 62 patients. 96% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $68 in total drug cost. In 2023, CMS named 12 claims across 1 drug.
Dr. Shamass' Part D claims by kind of drug, 2024
- Generic79 claims96%
- Brand-name and other3 claims4%
Dr. Shamass' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Shamass' Part D claims, 2024
- Opioids22%18 of 82 claims
- Antibiotics26%21 of 82 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 122024: 1633%
Drugs named by CMS: 1 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Christopher John Shamass takes part in Medicare
Dr. Shamass accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Christopher John Shamass received $891 in industry payments from 2016 to 2024
CMS Open Payments shows 13 general payments to Dr. Shamass from 9 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $246.
General payments to Dr. Shamass by program year, 2016 to 2024
Companies that paid Dr. Shamass the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Christopher John Shamass graduated from Michigan State University College of Osteopathic Medicine
Dr. Shamass graduated from Michigan State University College of Osteopathic Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Christopher John Shamass's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Christopher John Shamass
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Christopher John Shamass' NPI number?
Dr. Christopher John Shamass' NPI number is 1376807784. It was assigned on June 29, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher John Shamass?
Dr. Christopher John Shamass is an emergency medicine physician in Mount Clemens, Michigan. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Christopher John Shamass practice?
Dr. Shamass practices at 1000 Harrington St, Mount Clemens, MI 48043. Dr. Shamass' primary practice is McLaren Macomb Hospital in Mount Clemens, Michigan. Dmand AI also links Dr. Shamass to 1 medical group.
What is Dr. Christopher John Shamass' office phone number?
The practice phone on file for Dr. Shamass is (586) 493-8000.
What is Dr. Christopher John Shamass' medical license number?
Dr. Shamass holds Michigan license 5101019938.
Which hospitals is Dr. Christopher John Shamass affiliated with?
Dr. Shamass is affiliated with McLaren Macomb.
What medical group is Dr. Christopher John Shamass part of?
Dr. Shamass is linked to Observation Physicians of Macomb. Dmand AI links Dr. Shamass to 1 more medical group.
Does Dr. Christopher John Shamass accept Medicare?
Yes. CMS data shows Dr. Shamass billed Medicare for 414 services in 2024, and Dr. Shamass accepts Medicare assignment.
How many Medicare patients does Dr. Christopher John Shamass see?
CMS counts 393 Medicare patients who saw Dr. Shamass in 2024, with an average age of 72.
What services does Dr. Christopher John Shamass bill to Medicare?
In 2024, Dr. Shamass' most billed Medicare services were emergency department visit (99285), critical care (99291) and emergency department visit (99284).
Show 4 more questionsShow fewer questions
Where did Dr. Christopher John Shamass go to medical school?
Dr. Shamass graduated from Michigan State University College of Osteopathic Medicine in 2012.
What drugs does Dr. Christopher John Shamass prescribe most?
In 2024 Medicare Part D data, Dr. Shamass' most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. Christopher John Shamass received payments from drug or device companies?
CMS Open Payments shows $891 in general payments to Dr. Shamass from 9 companies from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Christopher John Shamass been practicing?
Dr. Shamass graduated from medical school in 2012, 14 years ago.
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