Sean Cassleman, DO
NPI 1720404775 · Internal Medicine Physician · Saint Clair Shores, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Cassleman, DO is a Internal Medicine Physician provider in Saint Clair Shores, MI (NPI 1720404775).
Provider details
- NPI number
- 1720404775
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 5101020867 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
637 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 267 | $127 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 89 | $90 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 75 | $130 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 69 | $16 |
| Assessment of Emotional Or Behavioral Problems96127 | 63 | $5 |
| Hemoglobin A1c Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 90 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 410 | 110 |
| Levothyroxine Sodium | 288 | 69 |
| Losartan Potassium | 250 | 75 |
| Amlodipine Besylate | 186 | 63 |
| Rosuvastatin Calcium | 166 | 59 |
| Lisinopril | 165 | 52 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$138 across 8 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)
- 21444 Harper AveSaint Clair Shores, MI 48080-2244Phone: (586) 200-4265
Registry dates
- Enumerated
- 2014-03-14
- Last updated
- 2025-11-01
- Certified
- 2025-11-01
Frequently asked questions
- What is Sean Cassleman's NPI number?
- Sean Cassleman's National Provider Identifier (NPI) is 1720404775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Cassleman's specialty?
- Sean Cassleman is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sean Cassleman located?
- Sean Cassleman's practice location on file with NPPES is 21000 E 12 Mile Rd, Saint Clair Shores, MI 48081-1116.
- What is Sean Cassleman's phone number?
- The practice phone number listed in the NPPES registry for Sean Cassleman is (313) 598-0799.
- Does Sean Cassleman accept Medicare?
- Sean Cassleman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Cassleman's NPI active?
- Yes — Sean Cassleman's NPI (1720404775) is active in the NPPES registry as of the last update on 2025-11-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.