Dr. Matthew K. Folstein, MD
- Medicare services, 2024
- 235
- Medicare patients, 2024
- 160
- Part D claims, 2024
- 26
- Publications
- 7
- Hospital affiliations
- 2
- Practice address
- 5215 Holy Cross Pkwy, Mishawaka, IN 46545
- Practice phone
- Call (574) 335-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Folstein'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. Matthew K. Folstein is a general surgeon in Mishawaka, Indiana
Dr. Folstein practices at Saint Joseph Mishawaka Medical Center in Mishawaka, Indiana, part of Trinity Health.
Dr. Folstein's NPI, 1952536674, was assigned on May 26, 2009. Dr. Folstein graduated from University of Maryland School of Medicine in 2009. Dr. Folstein holds Indiana license 01074919.
- NPI
- 1952536674NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224342944
- NPI enumeration date
- May 26, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (574) 335-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Matthew K. Folstein practices at Saint Joseph Mishawaka Medical Center in Mishawaka, Indiana
Dr. Folstein's primary practice is Saint Joseph Mishawaka Medical Center, at 5215 Holy Cross Pkwy, Mishawaka, IN 46545 in St. Joseph County. The practice phone is (574) 335-5000.
- Saint Joseph Mishawaka Medical Center5215 Holy Cross Pkwy, Mishawaka, IN 46545 · St. Joseph CountyPhone(574) 335-5000
Source: Dmand AI Affiliation Data
Dr. Matthew K. Folstein is affiliated with 4 sites of care and 2 medical groups
Dr. Folstein's primary practice is Saint Joseph Mishawaka Medical Center in Mishawaka, Indiana, part of Trinity Health. Dr. Folstein is also affiliated with Norton King's Daughters' Health. The medical group on file is Saint Joseph Medical Group. Dmand AI also links Dr. Folstein to 1 more group practice or clinic, 1 therapy and rehab clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Matthew K. Folstein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Folstein practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Saint Joseph Mishawaka Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Trinity Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Matthew K. Folstein is one of 530 general surgeons in Indiana
Surgery is Dr. Folstein's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Folstein is licensed in Indiana.
Specialties and state licenses
- Surgery, IndianaPrimary
General surgeons near Dr. Folstein
Counts of general surgeons 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. Matthew K. Folstein billed Medicare for 235 services in 2024
CMS data shows 235 Medicare services from Dr. Folstein across 10 procedure codes in 2024, for 160 Medicare patients. Medicare paid $55,954 for them.
Dr. Folstein's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2112024: 15527%
- Surgery
- 2023: 332024: 80142%
Where Dr. Folstein's Medicare services took place, 2024
- In an office10645%
- In a facility12955%
Dr. Folstein compared with the Indiana median for general surgeons, 2024
- Dr. Folstein
- Indiana median
- Medicare services
- 235vs 15651% above
- Medicare patients
- 160vs 13122% above
- Part D claims
- 42vs 405% above
Medians across 526 general surgeons in Indiana with Dmand AI profiles that report each measure.
Dr. Folstein'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.
Need commercial claims for Dr. Folstein?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Folstein and other general surgeons in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Matthew K. Folstein treated 160 Medicare patients in 2024, average age 72
CMS counts 160 Medicare patients who saw Dr. Folstein in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 1.47, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Folstein's median patient age at 65, with 35% women.
Dr. Folstein's Medicare patients by age, 2024
Dr. Folstein's Medicare patients by sex, 2024
- Women8151%
- Men7949%
Chronic conditions among Dr. Folstein's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis41%
- Diabetes33%
- Chronic kidney disease28%
- Ischemic heart disease28%
- Anxiety26%
- Mood disorders26%
Share of Medicare patients with each condition. A patient can have several.
Dr. Folstein's 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
- Women35%
- Men65%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Matthew K. Folstein wrote 26 Medicare Part D claims in 2024
In 2024, Dr. Folstein wrote 26 Medicare Part D claims for 17 patients. 100% of them were for generic drugs. They cover 3 drugs, with $345 in total drug cost. In 2022, CMS named 11 claims across 1 drug.
Dr. Folstein's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 112023: 42282%
Drugs named by CMS: 3 in 2023, 1 in 2022.
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. Matthew K. Folstein takes part in Medicare
Dr. Folstein accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Hernia repair - groin (open): 1 to 10 procedures (CMS shows small counts as a range)
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Matthew K. Folstein has 7 publications on record
Dmand AI links 7 papers to Dr. Folstein, published from 2010 to 2017. Dr. Folstein has published most often in Am Surg. Dr. Folstein's most frequent co-authors are Karan Chopra, MD, Devinder Singh, MD and Brian R. Gastman, MD.
Dr. Folstein's papers by year, 2010 to 2017
Dr. Folstein's most frequent co-authors
Recent publications by Dr. Folstein
Ann Plast Surg
See who Dr. Folstein researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Folstein works with, so you can find a warm path to the right general surgeons.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Matthew K. Folstein received $4,605 in industry payments from 2016 to 2025
CMS Open Payments shows 136 general payments to Dr. Folstein from 14 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 68% of the total. Intuitive Surgical, Inc. paid the most, $2,779.
General payments to Dr. Folstein by program year, 2016 to 2025
General payments to Dr. Folstein by kind, 2016 to 2025
- Food and beverage$3,14968%
- Travel and lodging$1,04723%
- Gifts$4099%
Companies that paid Dr. Folstein 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. Matthew K. Folstein graduated from University of Maryland School of Medicine
Dr. Folstein graduated from University of Maryland School of Medicine in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Matthew K. Folstein'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 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Matthew K. Folstein
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. Matthew K. Folstein's NPI number?
Dr. Matthew K. Folstein's NPI number is 1952536674. It was assigned on May 26, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew K. Folstein?
Dr. Matthew K. Folstein is a general surgeon in Mishawaka, Indiana. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Matthew K. Folstein practice?
Dr. Folstein practices at 5215 Holy Cross Pkwy, Mishawaka, IN 46545. Dr. Folstein's primary practice is Saint Joseph Mishawaka Medical Center in Mishawaka, Indiana, part of Trinity Health. Dmand AI also links Dr. Folstein to 1 group practice or clinic, 1 therapy and rehab clinic and 1 medical group.
What is Dr. Matthew K. Folstein's office phone number?
The practice phone on file for Dr. Folstein is (574) 335-5000.
What is Dr. Matthew K. Folstein's medical license number?
Dr. Folstein holds Indiana license 01074919.
Which hospitals is Dr. Matthew K. Folstein affiliated with?
Dr. Folstein practices at Saint Joseph Mishawaka Medical Center in Mishawaka, Indiana. Dr. Folstein is also affiliated with Norton King's Daughters' Health.
What medical group is Dr. Matthew K. Folstein part of?
Dr. Folstein is linked to Saint Joseph Medical Group. Dmand AI links Dr. Folstein to 1 more medical group.
Does Dr. Matthew K. Folstein accept Medicare?
Yes. CMS data shows Dr. Folstein billed Medicare for 235 services in 2024, and Dr. Folstein accepts Medicare assignment.
How many Medicare patients does Dr. Matthew K. Folstein see?
CMS counts 160 Medicare patients who saw Dr. Folstein in 2024, with an average age of 72.
What services does Dr. Matthew K. Folstein bill to Medicare?
In 2024, Dr. Folstein's most billed Medicare services were office visit, new patient (99204), office visit, established patient (99214) and hospital inpatient care (99222).
Show 6 more questionsShow fewer questions
Where did Dr. Matthew K. Folstein go to medical school?
Dr. Folstein graduated from University of Maryland School of Medicine in 2009.
What drugs does Dr. Matthew K. Folstein prescribe most?
In 2023 Medicare Part D data, Dr. Folstein's most prescribed drugs by claims were Amoxicillin-Clavulanate Potass, Hydrocodone-Acetaminophen and Oxycodone-Acetaminophen.
Has Dr. Matthew K. Folstein received payments from drug or device companies?
CMS Open Payments shows $4,605 in general payments to Dr. Folstein from 14 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Matthew K. Folstein been practicing?
Dr. Folstein graduated from medical school in 2009, 17 years ago.
Does Dr. Matthew K. Folstein do research?
Dmand AI links 7 publications to Dr. Folstein, published from 2010 to 2017.
Who does Dr. Matthew K. Folstein publish with?
Dr. Folstein's most frequent co-authors are Karan Chopra, MD (3 shared papers), Devinder Singh, MD (3 shared papers) and Brian R. Gastman, MD (2 shared papers).
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