Dr. Mark E. Lassise, MD
- Medicare services, 2024
- 522
- Medicare patients, 2024
- 120
- Part D claims, 2024
- 709
- MIPS score, 2024
- 82
- Hospital affiliations
- 5
- Practice address
- 235 8th Avenue West, Cresco, IA 52136
- Practice phone
- Call (563) 547-2101
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Lassise'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 E. Lassise is a psychiatrist in Cresco, Iowa
Dr. Lassise practices at Regional Health Services of Howard County in Cresco, Iowa, part of State of Iowa.
Dr. Lassise's NPI, 1023002508, was assigned on September 9, 2005. Dr. Lassise graduated from University of Colorado School of Medicine, Denver in 1980. Dr. Lassise holds Iowa license 22919.
- NPI
- 1023002508NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8022059666
- NPI enumeration date
- September 9, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (563) 547-2101
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark E. Lassise practices at Regional Health Services of Howard County in Cresco, Iowa
Dr. Lassise's primary practice is Regional Health Services of Howard County, at 235 8th Avenue West, Cresco, IA 52136 in Howard County. The practice phone is (563) 547-2101.
- Regional Health Services of Howard County235 8th Avenue West, Cresco, IA 52136 · Howard CountyPhone(563) 547-2101
Source: Dmand AI Affiliation Data
Dr. Mark E. Lassise is affiliated with 7 sites of care and 3 medical groups
Dr. Lassise's primary practice is Regional Health Services of Howard County in Cresco, Iowa, part of State of Iowa. Dr. Lassise is also affiliated with MercyOne Oelwein Medical Center. The medical group on file is MercyOne North Iowa Anesthesia Professional Services. Dmand AI also links Dr. Lassise to 3 more hospitals, 2 group practices and clinics and 2 medical groups, 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. Mark E. Lassise's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lassise practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Regional Health Services of Howard County | Available with a free account |
| +6 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark E. Lassise is one of 276 psychiatrists in Iowa
Psychiatry is Dr. Lassise's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Lassise is licensed in Iowa.
Specialties and state licenses
- Psychiatry, IowaPrimary
Psychiatrists near Dr. Lassise
Counts of psychiatrists 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 E. Lassise billed Medicare for 522 services in 2024
CMS data shows 522 Medicare services from Dr. Lassise across 4 procedure codes in 2024, for 120 Medicare patients. Medicare paid $25,139 for them.
Dr. Lassise's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5982024: 51015%
- Tests and treatments
- 2023: 252024: 1252%
Where Dr. Lassise's Medicare services took place, 2024
- In an office48092%
- In a facility428%
Dr. Lassise compared with the Iowa median for psychiatrists, 2024
- Dr. Lassise
- Iowa median
- Medicare services
- 522vs 1842.8 times
- Medicare patients
- 120vs 6876% above
- Part D claims
- 603vs 1563.9 times
Medians across 295 psychiatrists in Iowa with Dmand AI profiles that report each measure.
Dr. Lassise'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. Lassise and other psychiatrists in Iowa.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark E. Lassise treated 120 Medicare patients in 2024, average age 76
CMS counts 120 Medicare patients who saw Dr. Lassise in 2024. The largest group is 65 to 74, with 48 patients. 75% of them have depression, and 75% have high blood pressure. 20% are also on Medicaid. Their average risk score is 1.38, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Lassise's median patient age at 77, with 72% women.
Dr. Lassise's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Lassise's Medicare patients by sex, 2024
- Women8470%
- Men3630%
Chronic conditions among Dr. Lassise's Medicare patients, 2024
- Depression75%
- High blood pressure75%
- Mood disorders75%
- High cholesterol71%
- Anxiety57%
- Arthritis54%
- Diabetes38%
- Chronic kidney disease37%
Share of Medicare patients with each condition. A patient can have several.
Dr. Lassise's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 77
Patient panel by sex, all payers
- Women72%
- Men28%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark E. Lassise wrote 709 Medicare Part D claims in 2024
In 2024, Dr. Lassise wrote 709 Medicare Part D claims for 101 patients. 98% of them were for generic drugs. CMS names the drug for 603 of them, across 19 drugs with 11 or more claims each, at $8,067 in total drug cost. In 2023, CMS named 3,564 claims across 50 drugs.
Dr. Lassise's Part D claims by kind of drug, 2024
- Generic692 claims98%
- Brand-name17 claims2%
Dr. Lassise'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. Lassise's Part D claims, 2024
- Antipsychotics, patients 65 and over24%167 of 709 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: 3,5642024: 60383%
Drugs named by CMS: 19 in 2024, 50 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
Dr. Mark E. Lassise scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Lassise for performance year 2024, reported as part of a group. Dr. Lassise accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Lassise as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Lassise's MIPS scores, performance year 2024
- 82of 100Final score
- 73.9of 100Quality
- 93of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Mark E. Lassise received $10,039 in industry payments from 2016 to 2025
CMS Open Payments shows 802 general payments to Dr. Lassise from 24 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Sunovion Pharmaceuticals Inc. paid the most, $2,059.
General payments to Dr. Lassise by program year, 2016 to 2025
General payments to Dr. Lassise by kind, 2016 to 2025
- Food and beverage$9,91299%
- Education$1271%
Companies that paid Dr. Lassise 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 E. Lassise graduated from University of Colorado School of Medicine, Denver
Dr. Lassise graduated from University of Colorado School of Medicine, Denver in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark E. Lassise'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)Clinician Public Reporting: Overall MIPS Performance (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 E. Lassise
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 E. Lassise's NPI number?
Dr. Mark E. Lassise's NPI number is 1023002508. It was assigned on September 9, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark E. Lassise?
Dr. Mark E. Lassise is a psychiatrist in Cresco, Iowa. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Mark E. Lassise practice?
Dr. Lassise practices at 235 8th Avenue West, Cresco, IA 52136. Dr. Lassise's primary practice is Regional Health Services of Howard County in Cresco, Iowa, part of State of Iowa. Dmand AI also links Dr. Lassise to 3 hospitals, 2 group practices and clinics and 2 medical groups.
What is Dr. Mark E. Lassise's office phone number?
The practice phone on file for Dr. Lassise is (563) 547-2101.
What is Dr. Mark E. Lassise's medical license number?
Dr. Lassise holds Iowa license 22919.
Which hospitals is Dr. Mark E. Lassise affiliated with?
Dr. Lassise practices at Regional Health Services of Howard County in Cresco, Iowa. Dr. Lassise is also affiliated with MercyOne Oelwein Medical Center. Dmand AI links Dr. Lassise to 3 more hospitals.
What medical group is Dr. Mark E. Lassise part of?
Dr. Lassise is linked to MercyOne North Iowa Anesthesia Professional Services. Dmand AI links Dr. Lassise to 2 more medical groups.
Does Dr. Mark E. Lassise accept Medicare?
Yes. CMS data shows Dr. Lassise billed Medicare for 522 services in 2024, and Dr. Lassise accepts Medicare assignment.
Does Dr. Mark E. Lassise offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Lassise as offering telehealth services.
What is Dr. Mark E. Lassise's MIPS score?
Dr. Lassise's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
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How many Medicare patients does Dr. Mark E. Lassise see?
CMS counts 120 Medicare patients who saw Dr. Lassise in 2024, with an average age of 76.
What services does Dr. Mark E. Lassise bill to Medicare?
In 2024, Dr. Lassise's most billed Medicare services were office visit, established patient (99213), office visit, established patient (99214) and office visit, new patient (99203).
Where did Dr. Mark E. Lassise go to medical school?
Dr. Lassise graduated from University of Colorado School of Medicine, Denver in 1980.
What drugs does Dr. Mark E. Lassise prescribe most?
In 2024 Medicare Part D data, Dr. Lassise's most prescribed drugs by claims were Buspirone HCl, Quetiapine Fumarate and Trazodone HCl.
Has Dr. Mark E. Lassise received payments from drug or device companies?
CMS Open Payments shows $10,039 in general payments to Dr. Lassise from 24 companies from 2016 to 2025. The largest total came from Sunovion Pharmaceuticals Inc.
How long has Dr. Mark E. Lassise been practicing?
Dr. Lassise graduated from medical school in 1980, 46 years ago.
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