Shawn Marein, D.O.
NPI 1265964878 · Pulmonary Disease Physician · Saint Joseph, MI
Enrolled with Medicare as Practitioner - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Shawn Marein, D.O. is a Pulmonary Disease Physician provider in Saint Joseph, MI (NPI 1265964878).
Provider details
- NPI number
- 1265964878
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
380 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 109 | $204 |
| Test to Measure Expiratory Airflow and Volume Changes Before and After Medication Administration94060 | 51 | $10 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 47 | $8 |
| Test to Determine Lung Volumes Using Sensors94726 | 44 | $11 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 39 | $93 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 30 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 73 | 32 |
| Fluticasone/Umeclidin/Vilanterbrand: Trelegy Ellipta | 71 | 14 |
| Umeclidinium Bromidebrand: Incruse Ellipta | 41 | — |
| Albuterol Sulfatebrand: Ventolin Hfa | 27 | — |
| Umeclidinium Brm/Vilanterol Trbrand: Anoro Ellipta | 26 | — |
| Tiotropium Bromidebrand: Spiriva Respimat | 25 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$10,588 across 18 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1215 E Michigan AveLansing, MI 48912-1811Phone: (517) 364-3530
Registry dates
- Enumerated
- 2017-04-02
- Last updated
- 2023-08-04
- Certified
- 2023-08-04
Frequently asked questions
- What is Shawn Marein's NPI number?
- Shawn Marein's National Provider Identifier (NPI) is 1265964878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Shawn Marein's specialty?
- Shawn Marein is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Shawn Marein located?
- Shawn Marein's practice location on file with NPPES is 1234 Napier Ave, Saint Joseph, MI 49085-2112.
- What is Shawn Marein's phone number?
- The practice phone number listed in the NPPES registry for Shawn Marein is (269) 982-5864.
- Does Shawn Marein accept Medicare?
- Shawn Marein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Shawn Marein's NPI active?
- Yes — Shawn Marein's NPI (1265964878) is active in the NPPES registry as of the last update on 2023-08-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.