Sean Anthony Cassleman, DO
Internal Medicine Physician · Saint Clair Shores, MI
Sean Anthony Cassleman, DO is an internal medicine physician with a practice address in Saint Clair Shores, Michigan, and NPI 1720404775, issued on Mar 14, 2014. Check the license (Michigan 5101020867, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Sean Anthony Cassleman
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 5101020867 MI
Self-reported in NPPES; status is on the state search - Practice location
- 21000 E 12 Mile RD, Saint Clair Shores, MI 48081
- Phone
- (313) 598-0799
- Enumerated
- Mar 14, 2014
- Record last updated
- Nov 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20170810003033); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Osteopathic Medicine, 2014
- Entity
- Type 1 · individual
Also registered at 21000 E 12 Mile RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Brammer, MDOtology & Neurotology Physician1659464782
- Kenneth Bush, RPHPharmacist1992002935
- Nina Callahan, M.S., CF-SLP, TSSLDSpeech-Language Pathologist1871320127
- Maria Juliana Codino, MS-CCC, SLPSpeech-Language Pathologist1578037966
- Daniel Colaluca, PHARM.D.Pharmacist1881708626
- Andrew Dzul, M.D.Otolaryngic Allergy Physician1295828358
Verify Sean Anthony Cassleman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101020867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% more Medicare Part D claims than the average internal medicine physician in 2024
5,429 Medicare Part D claims for 380 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 57 claims were for opioids.
Most prescribed
- Atorvastatin Calcium410 claims
- Levothyroxine Sodium288 claims
- Losartan Potassium250 claims
- Amlodipine Besylate186 claims
- Rosuvastatin Calcium166 claims
- Lisinopril165 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 83.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $138.46
8 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Henry Ford Semi Medical GroupSaint Clair Shores, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
23 internal medicine physician records list a practice address in Saint Clair Shores
They are 23 of the 1,255 NPPES records with a practice address in Saint Clair Shores, and 5,735 internal medicine physician records in Michigan.
All 23 in Saint Clair Shores → All 5,735 in Michigan → Every provider in Saint Clair Shores →
Other internal medicine physician records in Michigan
- Jamie Therese Abad, MDDetroit, MI1700573359
- Tomas Abalo, M.D.Iron Mountain, MI1336199975
- Ali Abbas, M.D.Pontiac, MI1972167526
- Sura Abbas, MDWarren, MI1801687405
- Ramzi Abbasi, MDSaginaw, MI1164270005
- Saadat Abbasi, MDKalamazoo, MI1912005596
- Shahzaman Abbasi, MDLansing, MI1376512111
- Youssef Abbiss, D.O.Mount Clemens, MI1982991881
- Valerie Abbott, MDSouthfield, MI1740289487
- Samer Abboud, MDSaginaw, MI1245804178
Common questions
What is Sean Anthony Cassleman, DO's NPI number?
Sean Anthony Cassleman, DO's National Provider Identifier (NPI) is 1720404775, issued on Mar 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Sean Anthony Cassleman, DO located?
The NPPES record lists a practice address at 21000 E 12 Mile RD, Saint Clair Shores, MI, 48081. Phone: (313) 598-0799. Providers update this record themselves, so call before visiting.
How can I verify Sean Anthony Cassleman, DO's license?
NPPES lists Michigan license number 5101020867, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sean Anthony Cassleman, DO prescribe under Medicare Part D?
In 2024, Sean Anthony Cassleman, DO had 5,429 Medicare Part D claims for 380 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Sean Anthony Cassleman, DO's MIPS final score?
The 2023 MIPS final score is 83.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.