1. Home
  2. Directory
  3. Michigan
  4. Saint Joseph
  5. Internal Medicine
  6. NPI Profile

SHAWN LOUIS MAREIN D.O.
NPI 1265964878
Internal Medicine - Pulmonary Disease in Saint Joseph, MI

Active since April 02, 2017PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
1234 NAPIER AVE, SAINT JOSEPH, MI 49085(269) 982-5864(269) 982-5113 Get Directions Write a Review

NPPES record last updated: August 4, 2023. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 1, 2020, Apr 2, 2017 (2 updates tracked since 2017).

About Shawn Louis Marein D.o. NPPES

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

SHAWN LOUIS MAREIN D.O. (NPI 1265964878) is an individual pulmonary disease provider in Saint Joseph, Michigan, licensed in Michigan (5101027331) and active in the NPI registry since April 2017. He is enrolled in Medicare PECOS, is affiliated with Lakeland Hospital, St Joseph, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1265964878
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameSHAWN LOUIS MAREINCredential: D.O.
Location Address1234 NAPIER AVESaint Joseph, MI 49085-2112
Mailing Address1215 E Michigan AveLansing, MI 48912-1811
Phone(269) 982-5864
Fax(269) 982-5113
Sole ProprietorYes
Medical School CMSOtherGraduated 2017
Enumeration DateApril 2, 2017
Last NPPES UpdateAugust 4, 20232 updates tracked since enumeration
NPPES CertifiedAugust 4, 2023
✔ NPI 1265964878 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in MI · 5101027331
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1234 NAPIER AVE, Saint Joseph, MI 49085
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Shawn Louis Marein D.o. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID840577011
PECOS Enrollment IDI20230802003632
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.

Areas of Expertise CMS Part B claims 9

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.

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.
109 services58 patients
Test to measure expiratory airflow and volume changes before and after medication administration 94060
This procedure measures how air flows in and out of your lungs. It's done before and after medication to see if the treatment improves your breathing. It's a simple, non-invasive test that involves breathing into a device called a spirometer.
51 services48 patients
Test to examine how well the lungs exchange gases 94729
This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.
47 services44 patients
Test to determine lung volumes using sensors 94726
This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.
44 services41 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
39 services34 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
30 services30 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Lakeland Hospital, St Joseph

Acute Care Hospitals · St Joseph, MI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number230021
Location1234 Napier AvenueSt Joseph, MI 49085 · Berrien County
Emergency services Birthing friendly

Corewell Health Watervliet Hospital

Acute Care Hospitals · Watervliet, MI
OwnershipVoluntary non-profit - Private
CMS Certification Number230078
Location400 Medical Park DrWatervliet, MI 49098 · Berrien County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49085 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
$126.15 typical visit price
range $54.34 – $166.68
Typical copayment $31.53 (range $13.58 – $41.67)
Most-billed visit code 99204
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality87.54
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Respiratory assist device, bi-level pressure capability, with back-up rate feature, used with noninvasive interface, e.g., nasal or facial mask (intermittent assist device with continuous positive airway pressure device) E0471
DME-Other DME · category DE001N
2 suppliers13 claims13 services$246.51 avg. paid by Medicare
Continuous positive airway pressure (cpap) device E0601
DME-Other DME · category DE001N
2 suppliers11 claims11 services$25.58 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers14 claims14 services$82.42 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
3 suppliers11 claims11 services$33.68 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

HANY S MESIHA MD
Internal Medicine
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 983-8300
CORY MINIER SCHMIDT MD
Pediatrics
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 985-4632
JORDAN ANDERSON
Occupational Therapist
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 983-8332
DR. KAREN J DYER M.D.
Pediatrics
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 985-4632
MR. NATHAN JOHN JORDAN MD
Radiology (Diagnostic Radiology)
1234 NAPIER AVE
ST JOSEPH, MI 49085
Berrien County (269) 983-8300
DR. JAMES G. SISAMIS MD
Anesthesiology
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 428-0118
DR. DIEGO P BETITA MD
Anesthesiology
1234 NAPIER AVE
SAINT JOSEPH, MI 49085
Berrien County (269) 428-0118
DR. JESSICA LYNN HAMILL SCHINDLER D.O.
Emergency Medicine
1234 NAPIER AVE, LAKELAND REGIONAL MEDICAL CENTER
SAINT JOSEPH, MI 49085
Berrien County (269) 982-4941

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 Shawn Marein's NPI number?

The NPI number for Shawn Marein is 1265964878. It was assigned to this individual provider in the NPPES registry on April 2, 2017.

Where is Shawn Marein located?

Shawn Marein practices at 1234 Napier Ave, Saint Joseph, MI 49085. The listed phone number is (269) 982-5864.

What is Shawn Marein's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Shawn Marein enrolled in Medicare?

Yes. Shawn Marein is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Shawn Marein accept?

Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 2 other insurers list Shawn Marein as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Shawn Marein affiliated with any hospitals?

According to CMS data, Shawn Marein is affiliated with Lakeland Hospital, St Joseph and Corewell Health Watervliet Hospital.

When was this NPI record last updated?

The NPPES record for Shawn Marein was last updated on August 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.