Michael Douglas Williamson, MD
Cardiovascular Disease Physician · Clearwater, FL
Michael Douglas Williamson, MD is a cardiovascular disease physician with a practice address in Clearwater, Florida, and NPI 1831180421, issued on Nov 2, 2005. Check the license (Florida ME31396, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- Michael Douglas Williamson
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- ME31396 FL
Self-reported in NPPES; status is on the state search - Practice location
- 455 Pinellas St, Clearwater, FL 33756
- Phone
- (727) 445-1911
- Enumerated
- Nov 2, 2005
- Record last updated
- Oct 26, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (727) 445-1986
- Medicaid ID
- 03642230 FL
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 1,946 in Florida → Look up another NPI →
Also registered at 455 Pinellas St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jay Amin, MDCardiovascular Disease Physician1720077365
- Michael Barry, M.D.Cardiovascular Disease Physician1619026770
- Gloria Castenir, PA-CPhysician Assistant1588112155
- Brian Chamberlain, PA-CPhysician Assistant1568437119
- Liberato Chapa, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1831163880
- Kerrie Coffman, ARNPNurse Practitioner1003270448
Verify Michael Douglas Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME31396Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
100% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
15 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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 Douglas Williamson among 1,946 cardiovascular disease physician records in Florida
Michael Douglas Williamson, MD is one of 1,946 cardiovascular disease physician records with a practice address in Florida. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 79% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 73% of these records are
- Record last updated2012 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in Florida
There are 1,946 cardiovascular disease physician records in Florida.
All 1,946 in Florida → Every provider in Clearwater → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Jay Amin, MDClearwater, FL 337561720077365
- Mahesh Amin, MDClearwater, FL 337561013985043
- Michael Barry, M.D.Clearwater, FL 337561619026770
- David Dieterich, DOClearwater, FL 337561083603591
- Alexander Heckman, MDClearwater, FL 337561811341746
- Cameron Kemal, M.D.Clearwater, FL 337561609309715
- Marilyn King, MDClearwater, FL 337561821087594
- Olga Kristof-Kuteyeva, MDClearwater, FL 337561942435862
Common questions
What is Michael Douglas Williamson, MD's NPI number?
Michael Douglas Williamson, MD's National Provider Identifier (NPI) is 1831180421, issued on Nov 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael Douglas Williamson, MD located?
The NPPES record lists a practice address at 455 Pinellas St, Clearwater, FL, 33756. Phone: (727) 445-1911. Providers update this record themselves, so call before visiting.
How can I verify Michael Douglas Williamson, MD's license?
NPPES lists Florida license number ME31396, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Douglas Williamson, MD prescribe under Medicare Part D?
In 2024, Michael Douglas Williamson, MD had 15 Medicare Part D claims; the average among cardiovascular disease physician prescribers was 3,078. 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.