Michael L. Masiowski, MD
Emergency Medicine Physician · Summerville, SC
Michael L. Masiowski, MD is an emergency medicine physician with a practice address in Summerville, South Carolina, and NPI 1639217821, issued on Feb 1, 2007. Check the license (South Carolina 21764, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Michael L. Masiowski
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 21764 SC
Self-reported in NPPES; status is on the state search - Practice location
- 295 Midland Pkwy, Summerville, SC 29485
- Phone
- (843) 832-5000
- Enumerated
- Feb 1, 2007
- Record last updated
- Apr 24, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicaid ID
- T57514 SC
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,244 in South Carolina → Look up another NPI →
Also registered at 295 Midland Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Michael L. Masiowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 21764Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average emergency medicine physician in 2024
180 Medicare Part D claims for 97 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Cefdinir18 claims
- Hydrocodone-Acetaminophen13 claims
- Amoxicillin-Clavulanate Potass12 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.
Michael L. Masiowski among 1,244 emergency medicine physician records in South Carolina
Michael L. Masiowski, MD is one of 1,244 emergency medicine physician records with a practice address in South Carolina. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 35% of them.
- NPI issued2007 · 35% of these records are older, 58% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2009 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in South Carolina
There are 1,244 emergency medicine physician records in South Carolina.
All 1,244 in South Carolina → Every provider in Summerville → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Jennifer Adair, M.D.Summerville, SC 294851679600134
- Michael Hopkins, MDSummerville, SC 294851548337561
- Richard Wendell, M.D.Summerville, SC 294851336265347
- Karen Kriza, MDSummerville, SC 294831023059011
- Stephen O' Connor, MDSummerville, SC 294831134137623
- Baird Oldfield, MDSummerville, SC 294831235177163
- Michael Adkins, M.D.Walterboro, SC 294881811992209
- Timothy Beatty, D.O.Walterboro, SC 294881639178064
Common questions
What is Michael L. Masiowski, MD's NPI number?
Michael L. Masiowski, MD's National Provider Identifier (NPI) is 1639217821, issued on Feb 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Michael L. Masiowski, MD located?
The NPPES record lists a practice address at 295 Midland Pkwy, Summerville, SC, 29485. Phone: (843) 832-5000. Providers update this record themselves, so call before visiting.
How can I verify Michael L. Masiowski, MD's license?
NPPES lists South Carolina license number 21764, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael L. Masiowski, MD prescribe under Medicare Part D?
In 2024, Michael L. Masiowski, MD had 180 Medicare Part D claims for 97 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.