Dr Mark E Lassise, MD - Medicare Psychiatry in Mason City, IA

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Dr Mark E Lassise, MD is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in Mason City, Iowa. He went to University Of Colorado School Of Medicine, Denver and graduated in 1980 and has 46 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice North Iowa Mercy Clinics and his current practice location is 250 S Crescent Dr Ste 10, Mason City, Iowa. You can reach out to his office (for appointments etc.) via phone at (641) 494-5170.

Dr Mark E Lassise is licensed to practice in Iowa (license number 22919) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1023002508.

Contact Information

Dr Mark E Lassise, MD
250 S Crescent Dr Ste 10,
Mason City, IA 50401-2926
(641) 494-5170
(641) 494-5175

Map and Direction




Physician's Profile

Full NameDr Mark E Lassise
GenderMale
SpecialityPsychiatry
Experience46 Years
Location250 S Crescent Dr Ste 10, Mason City, Iowa
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Mark E Lassise attended and graduated from University Of Colorado School Of Medicine, Denver in 1980
  NPI Data:
  • NPI Number: 1023002508
  • Provider Enumeration Date: 09/09/2005
  • Last Update Date: 07/06/2020
  Medicare PECOS Information:
  • PECOS PAC ID: 8022059666
  • Enrollment ID: I20050513000446

Medical Identifiers

Medical identifiers for Dr Mark E Lassise such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1023002508NPI-NPPES
2223412MedicaidIA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry 22919 (Iowa)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercyone New Hampton Medical CenterNew hampton, IAHospital
Mercyone Oelwein Medical CenterOelwein, IAHospital
Regional Health Services Of Howard CountyCresco, IAHospital
Mitchell County Regional HealthOsage, IAHospital
Madison County Health Care SystemWinterset, IAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
North Iowa Mercy Clinics7810809076304

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Mark E Lassise allows following entities to bill medicare on his behalf.
Entity NameNorth Iowa Mercy Clinics
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1780278242
PECOS PAC ID: 7810809076
Enrollment ID: O20031105000273
Entity NameMason City Clinic PC
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1043254055
PECOS PAC ID: 2860385572
Enrollment ID: O20040205001159
Entity NamePalmer Lutheran Health Center Inc
Entity TypePart A Provider - Critical Access Hospital
Entity IdentifiersNPI Number: 1598765398
PECOS PAC ID: 4284544255
Enrollment ID: O20061104000164

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Mark E Lassise is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Mark E Lassise, MD
250 S Crescent Dr,
Mason City, IA 50401-2926

Ph: (641) 494-5400		Dr Mark E Lassise, MD
250 S Crescent Dr Ste 10,
Mason City, IA 50401-2926

Ph: (641) 494-5170

Reviews and Comments


Psychiatry & Neurology Doctors in Mason City, IA

Dr. Michael Adams Blackmore, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 20 5th St Nw, Mason City, IA 50401
Phone: 641-422-9000    Fax: 641-422-9088
Dr. Rajinder K Verma, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 250 S Crescent Dr, Mason City, IA 50401
Phone: 641-494-5290    Fax: 641-494-5294
Rene Marie Duregger, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 250 S Crescent Dr, Mason City, IA 50401
Phone: 641-494-5170    
Dr. Rogerio Miranda Ramos, M.D.
Psychiatry & Neurology
Medicare: May Accept Medicare Assignments
Practice Location: 250 S Crescent Dr Ste 10, Mason City, IA 50401
Phone: 641-494-5170    Fax: 641-494-5175
Ronald M Larsen, MD
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 1000 4th St Sw, Mmcni Administration, Mason City, IA 50401
Phone: 641-422-7492    
Dr. Sant Hayreh, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 250 S Crescent Dr, Mason City, IA 50401
Phone: 641-422-6760    Fax: 641-422-6677
Alireza Yarahmadi, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 1000 4th St Sw, Ste Im, Mason City, IA 50401
Phone: 641-428-6999    Fax: 641-428-6678

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.