Dr. Mark W. Schaar, MD
- Medicare services, 2024
- 519
- Medicare patients, 2024
- 103
- Part D claims, 2024
- 6,576
- Hospital affiliations
- 2
- Industry payments
- $23,144
- Practice address
- 3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911
- Practice phone
- Call (517) 374-7600
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Capital Internal Medicine Associates
Primary care practice · Lansing, Michigan
Find Dr. Schaar's 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. Mark W. Schaar is a family medicine physician in Lansing, Michigan
Dr. Schaar practices at Capital Internal Medicine Associates in Lansing, Michigan.
Dr. Schaar's NPI, 1932180148, was assigned on November 7, 2005. Dr. Schaar graduated from Michigan State University College of Human Medicine in 1985. Dr. Schaar holds Michigan license 4301050244.
- NPI
- 1932180148NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3274508536
- NPI enumeration date
- November 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (517) 374-7600
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 67
- Medical school graduation
- 1985
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark W. Schaar practices at Capital Internal Medicine Associates in Lansing, Michigan
Dr. Schaar's primary practice is Capital Internal Medicine Associates, at 3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911. The practice phone is (517) 374-7600.
- Capital Internal Medicine Associates3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911Phone(517) 374-7600
Source: Dmand AI Affiliation Data
Dr. Mark W. Schaar is affiliated with 4 sites of care and 2 medical groups
Dr. Schaar's primary practice is Capital Internal Medicine Associates in Lansing, Michigan. Dr. Schaar is also affiliated with University of Michigan Health-Sparrow Lansing. The medical group on file is Capital Internal Medicine Associates. Dmand AI also links Dr. Schaar to 1 more hospital, 1 group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mark W. Schaar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Schaar practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Capital Internal Medicine Associates | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark W. Schaar is one of 4,931 family medicine physicians in Michigan
Family medicine is Dr. Schaar's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Schaar is licensed in Michigan.
Specialties and state licenses
- Family medicine, MichiganPrimary
Family medicine physicians near Dr. Schaar
Counts of family 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. Mark W. Schaar billed Medicare for 519 services in 2024
CMS data shows 519 Medicare services from Dr. Schaar across 7 procedure codes in 2024, for 103 Medicare patients. Medicare paid $25,640 for them. Every service was in an office.
Dr. Schaar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 1042024: 269159%
- Office and hospital visits
- 2023: 1942024: 1921%
- Lab and pathology
- 2023: 332024: 4639%
- Tests and treatments
- 2023: 02024: 12
Dr. Schaar compared with the Michigan median for family medicine physicians, 2024
- Dr. Schaar
- Michigan median
- Medicare services
- 519vs 2482.1 times
- Medicare patients
- 103vs 1128% below
- Part D claims
- 5,957vs 1,0335.8 times
Medians across 4,990 family medicine physicians in Michigan with Dmand AI profiles that report each measure.
Dr. Schaar's 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. Schaar and other family medicine physicians in Michigan.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark W. Schaar treated 103 Medicare patients in 2024, average age 72
CMS counts 103 Medicare patients who saw Dr. Schaar in 2024. The largest group is 65 to 74, with 47 patients. 70% of them have high blood pressure, and 68% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.23, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Schaar's median patient age at 55, with 49% women.
Dr. Schaar's Medicare patients by age, 2024
Dr. Schaar's Medicare patients by sex, 2024
- Women4544%
- Men5856%
Chronic conditions among Dr. Schaar's Medicare patients, 2024
- High blood pressure70%
- High cholesterol68%
- Arthritis54%
- Diabetes38%
- Depression28%
- Mood disorders27%
- Ischemic heart disease26%
- Anxiety24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Schaar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women49%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark W. Schaar wrote 6,576 Medicare Part D claims in 2024
In 2024, Dr. Schaar wrote 6,576 Medicare Part D claims for 386 patients. 86% of them were for generic drugs. CMS names the drug for 5,957 of them, across 116 drugs with 11 or more claims each, at $677,573 in total drug cost. In 2023, CMS named 5,968 claims across 114 drugs.
Dr. Schaar's Part D claims by kind of drug, 2024
- Generic5,668 claims86%
- Brand-name874 claims13%
- Other34 claims1%
Dr. Schaar's 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. Schaar's Part D claims, 2024
- Opioids4%264 of 6,576 claims
- Antibiotics3%169 of 6,576 claims
- Antipsychotics, patients 65 and over1%76 of 6,576 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: 5,9682024: 5,957No change
Drugs named by CMS: 116 in 2024, 114 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. Mark W. Schaar takes part in Medicare
Dr. Schaar 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. Mark W. Schaar received $23,144 in industry payments from 2016 to 2025
CMS Open Payments shows 1,418 general payments to Dr. Schaar from 76 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Novo Nordisk Inc paid the most, $2,044.
General payments to Dr. Schaar by program year, 2016 to 2025
General payments to Dr. Schaar by kind, 2016 to 2025
- Food and beverage$22,94099%
- Education$2041%
Companies that paid Dr. Schaar the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark W. Schaar graduated from Michigan State University College of Human Medicine
Dr. Schaar graduated from Michigan State University College of Human Medicine in 1985.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark W. Schaar'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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. Mark W. Schaar
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. Mark W. Schaar's NPI number?
Dr. Mark W. Schaar's NPI number is 1932180148. It was assigned on November 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark W. Schaar?
Dr. Mark W. Schaar is a family medicine physician in Lansing, Michigan. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark W. Schaar practice?
Dr. Schaar practices at 3955 Patient Care Dr Ste A Suite A, Lansing, MI 48911. Dr. Schaar's primary practice is Capital Internal Medicine Associates in Lansing, Michigan. Dmand AI also links Dr. Schaar to 1 hospital, 1 group practice or clinic and 1 medical group.
What is Dr. Mark W. Schaar's office phone number?
The practice phone on file for Dr. Schaar is (517) 374-7600.
What is Dr. Mark W. Schaar's medical license number?
Dr. Schaar holds Michigan license 4301050244.
Which hospitals is Dr. Mark W. Schaar affiliated with?
Dr. Schaar is affiliated with University of Michigan Health-Sparrow Lansing. Dmand AI links Dr. Schaar to 1 more hospital.
What medical group is Dr. Mark W. Schaar part of?
Dr. Schaar is linked to Capital Internal Medicine Associates. Dmand AI links Dr. Schaar to 1 more medical group.
Does Dr. Mark W. Schaar accept Medicare?
Yes. CMS data shows Dr. Schaar billed Medicare for 519 services in 2024, and Dr. Schaar accepts Medicare assignment.
How many Medicare patients does Dr. Mark W. Schaar see?
CMS counts 103 Medicare patients who saw Dr. Schaar in 2024, with an average age of 72.
What services does Dr. Mark W. Schaar bill to Medicare?
In 2024, Dr. Schaar's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0439).
Show 4 more questionsShow fewer questions
Where did Dr. Mark W. Schaar go to medical school?
Dr. Schaar graduated from Michigan State University College of Human Medicine in 1985.
What drugs does Dr. Mark W. Schaar prescribe most?
In 2024 Medicare Part D data, Dr. Schaar's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Rosuvastatin Calcium.
Has Dr. Mark W. Schaar received payments from drug or device companies?
CMS Open Payments shows $23,144 in general payments to Dr. Schaar from 76 companies from 2016 to 2025. The largest total came from Novo Nordisk Inc.
How long has Dr. Mark W. Schaar been practicing?
Dr. Schaar graduated from medical school in 1985, 41 years ago.
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