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MARK A HASSEN MD
NPI 1932151958
Emergency Medicine in Farmington, MO

Active since May 17, 2006PECOS Enrolled
1212 WEBER RD, FARMINGTON, MO 63640(573) 701-7215(573) 701-7117 Get Directions Write a Review

NPPES record last updated: March 17, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mark A Hassen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK A HASSEN MD (NPI 1932151958) is an individual emergency medicine provider in Farmington, Missouri, licensed in Missouri (101250) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1932151958
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameMARK A HASSENCredential: MD
Location Address1212 WEBER RDFarmington, MO 63640-3325
Mailing Address4321 S Compton AveSaint Louis, MO 63111-1131 · (573) 701-7215 · Fax (573) 701-7117
Phone(573) 701-7215
Fax(573) 701-7117
Sole ProprietorNo
Enumeration DateMay 17, 2006
Last NPPES UpdateMarch 17, 2008
✔ NPI 1932151958 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in MO · 101250
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1212 WEBER RD, Farmington, MO 63640
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Other Identifiers 1

Medicare UPINF74668MO

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark A Hassen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Mark Hassen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Iron County Hospital District
17 mi
Rural Health
301 N HIGHWAY 21
Pilot Knob, MO 63663
  • Reassigned Medicare billing, Missouri enrollment
  • Also billed through NPI 1477648178 (Missouri)
  • 53 clinicians in this Medicare group
NPI 1073799367 (573) 546-8051
Potosi Emergency Group, LLC
20 mi
Emergency Medicine
300 HEALTH WAY DR
Potosi, MO 63664
  • Reassigned Medicare billing, Missouri enrollment
  • 60 clinicians in this Medicare group
NPI 1881075349 (800) 893-9698
Southeastern Emergency Physicians Of Memphis LLC
77 mi
Emergency Medicine
1 MEMORIAL DR
Alton, IL 62002
  • Reassigned Medicare billing, Missouri enrollment
  • 343 clinicians in this Medicare group
NPI 1437105277 (618) 463-7474

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
126 services119 patients
Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
69 services66 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
39 services38 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63640 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$81.64 typical visit price
range $52.28 – $161.24
Typical copayment $20.41 (range $13.07 – $40.31)
Most-billed visit code 99203
Established Patient
$93.24 typical visit price
range $16.30 – $131.05
Typical copayment $23.31 (range $4.07 – $32.76)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RICHARD C DORE' RN, CRNA
Nurse Anesthetist, Certified Registered
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 756-4581
PARKLAND HEALTH CENTER - WEBER ROAD
Medicare Defined Swing Bed Unit
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 756-4581
FARMINGTON MISSOURI HOSPITAL COMPANY, LLC
Medicare Defined Swing Bed Unit
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 756-4581
FARMINGTON CLINIC COMPANY LLC
Surgery
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 756-3662
BARBARA J ANDERSON RN, CRNA
Nurse Anesthetist, Certified Registered
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 756-4581
PARKLAND HEALTH CENTER - WEBER ROAD
Psychiatric Unit
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 756-4581
DWAYNE NATHAN DAMBA DO
Emergency Medicine
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 701-7215
FARMINGTON MISSOURI HOSPITAL COMPANY, LLC
General Acute Care Hospital
1212 WEBER RD
FARMINGTON, MO 63640
St. Francois County (573) 756-4581

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Hassen's NPI number?

The NPI number for Mark Hassen is 1932151958. It was assigned to this individual provider in the NPPES registry on May 17, 2006.

Where is Mark Hassen located?

Mark Hassen practices at 1212 Weber Rd, Farmington, MO 63640. The listed phone number is (573) 701-7215.

What is Mark Hassen's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Mark Hassen enrolled in Medicare?

Yes. Mark Hassen is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Mark Hassen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Hassen reassigns Medicare benefits to 3 organizations: Iron County Hospital District (Pilot Knob, MO), Potosi Emergency Group, LLC (Potosi, MO) and Southeastern Emergency Physicians Of Memphis LLC (Alton, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mark Hassen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mark Hassen was last updated on March 17, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.