Dr. Mark E Lassise
M.D. | Psychiatry | 45+ years Exp
250 S Crescent Dr Ste 10, Mason City
Iowa, 50401-2926
641-494-5170 641-494-5175
Maps & DirectionsDr. Mark E Lassise is a Mason City, Iowa based psychiatrist with 45 years of experience in Psychiatry. He completed his graduation from University Of Colorado School Of Medicine, Denver in 1980. and . He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Mark E Lassise is 22919 for Psychiatry in Iowa. His current practice location is 250 S Crescent Dr Ste 10, Mason City. Patients can reach him at 641-494-5170 or can fax him at 641-494-5175. Dr. Mark E Lassise is M.D. in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1023002508.
Dr. Mark E Lassise specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
Complete Profile:
Dr. Mark E Lassise speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | Dr. Mark E Lassise |
| Specialization: | Psychiatry |
| Gender: | Male |
| Credentials: | M.D. |
| Experience: | 45+ years |
| Medical School Attended: | University Of Colorado School Of Medicine, Denver |
| Graduation Year: | 1980 |
| Accepts Medicare Assignment: | Yes |
| Practice Address: | 250 S Crescent Dr Ste 10, Mason City,
Iowa, 50401-2926 |
| Phone: | 641-494-5170 |
| Fax: | 641-494-5175 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| PAC ID: | 8022059666 |
| Enrollment ID: | I20050513000446 |
| NPI Number: | 1023002508 |
| NPI Enumeration Date: | 09 Sep, 2005 |
| NPI Last Update On: | 06 Jul, 2020 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. Mark E Lassise are as mentioned below.
| License Number | Specialization | State | Status | |
| 22919 | Psychiatry | Iowa | Primary | |
Hospital Affiliation:
Surgeons are affiliated to many hospitals whom they worked with in the past or are presently working with. One surgeon can be affiliated to four to five hospitals at a time.
| Hospital Name (CCN) | State | Hospital Type |
| (160064) | Mason city, IA | Acute Care Hospital |
| (161316) | West union, IA | Critical Access Hospital |
| (161328) | Cresco, IA | Critical Access Hospital |
| (161323) | Osage, IA | Critical Access Hospital |
| (161331) | New hampton, IA | Critical Access Hospital |
Group Practice:
Group practices are practice of medicine by a group of physicians who share their premises and other resources. Following list states all the group name
with which Dr. Mark E Lassise is associated with along with the number of members in that group.
| Organization Name (Group PAC ID) | Members |
| Mason City Clinic Pc (2860385572) | 43 |
| North Iowa Mercy Clinics (7810809076) | 258 |
Other Medical Identifiers:
Other legacy medical identifiers associated with Dr. Mark E Lassise such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
| Identifier | Type | State | Issuer |
| 2223412 | Medicaid | Iowa | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Dr. Mark E Lassise
250 S Crescent Dr,
Mason City, Iowa |
| Zip: | 50401-2926 |
| Phone Number: | 641-494-5400 |
| Fax Number: | 641-494-5403 |
Patients can reach Dr. Mark E Lassise at
250 S Crescent Dr Ste 10, Mason City, Iowa or can
call to book an appointment on 641-494-5170.
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Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 13 October, 2025.