Thomas Guarnieri, M.D.
Clinical Cardiac Electrophysiology Physician · Towson, MD
Thomas Guarnieri, M.D. is a clinical cardiac electrophysiology physician with a practice address in Towson, Maryland, and NPI 1275536591, issued on May 31, 2005. Check the license (Maryland D0018334, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Thomas Guarnieri
- Credential
- M.D.
- Primary taxonomy
- Clinical Cardiac Electrophysiology Physician 207RC0001X
- License number
- D0018334 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6569 N Charles St, Towson, MD 21204
- Phone
- (410) 602-9262
- Enumerated
- May 31, 2005
- Record last updated
- Aug 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (410) 602-9276
- Medicaid ID
- 316801800 MD
- Entity
- Type 1 · individual
8 nearest clinical cardiac electrophysiology physician records → All 65 in Maryland → Look up another NPI →
Also registered at 6569 N Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Bottiglieri, MDObstetrics Physician1609004373
- Olivia Brown, SLPSpeech-Language Pathologist1164243341
- Sidney Gottlieb, M.D.Cardiovascular Disease Physician1477556793
- Francesco Grasso, M.D.Specialist1316930712
- James Porterfield, M.D.Cardiovascular Disease Physician1912991704
- Catherine Wilson, SLPSpeech-Language Pathologist1639696123
Verify Thomas Guarnieri in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0018334Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% more Medicare Part D claims than the average clinical cardiac electrophysiology physician in 2024
3,018 Medicare Part D claims for 595 beneficiaries, against an average of 1,710 among the 3,173 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Eliquis457 claims
- Metoprolol Succinate453 claims
- Atorvastatin Calcium255 claims
- Rosuvastatin Calcium190 claims
- Flecainide Acetate129 claims
- Xarelto129 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.
Thomas Guarnieri among 65 clinical cardiac electrophysiology physician records in Maryland
Thomas Guarnieri, M.D. is one of 65 clinical cardiac electrophysiology physician records with a practice address in Maryland. 94% 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, 80% newer
- In a Medicare fileYes · 94% of these records are
- In the CMS Doctors and Clinicians fileNo · 83% of these records are
- Record last updated2010 · 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 207RC0001X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Cardiac Electrophysiology Physician providers in Maryland
There are 65 clinical cardiac electrophysiology physician records in Maryland.
All 65 in Maryland → Every provider in Towson → Clinical Cardiac Electrophysiology Physician nationwide →
The 8 clinical cardiac electrophysiology physician records with the nearest ZIP codes
- David Edwards, M.D. PH.D.Towson, MD 212041215089214
- Nilofar Islam, MDTowson, MD 212041588644074
- Vikas Kalra, MDTowson, MD 212041023270550
- Robert Peters, M.D.Baltimore, MD 212011407819634
- Benjamin Rosen, MDBaltimore, MD 212011043703879
- Stephen Shorofsky, M.D.Baltimore, MD 212011124068721
- Mukta Srivastava, MDBaltimore, MD 212011548455694
- Paresh Shah, M.D.Baltimore, MD 212081740274414
Common questions
What is Thomas Guarnieri, M.D.'s NPI number?
Thomas Guarnieri, M.D.'s National Provider Identifier (NPI) is 1275536591, issued on May 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Guarnieri, M.D. located?
The NPPES record lists a practice address at 6569 N Charles St, Towson, MD, 21204. Phone: (410) 602-9262. Providers update this record themselves, so call before visiting.
How can I verify Thomas Guarnieri, M.D.'s license?
NPPES lists Maryland license number D0018334, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas Guarnieri, M.D. prescribe under Medicare Part D?
In 2024, Thomas Guarnieri, M.D. had 3,018 Medicare Part D claims for 595 beneficiaries; the average among clinical cardiac electrophysiology physician prescribers was 1,710. 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.