James K. Porterfield, M.D.
Cardiovascular Disease Physician · Towson, MD
James K. Porterfield, M.D. is a cardiovascular disease physician with a practice address in Towson, Maryland, and NPI 1912991704, issued on Sep 7, 2005. Check the license (Maryland D0030948, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- James K. Porterfield
- Credential
- M.D.
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- D0030948 MD
Self-reported in NPPES; status is on the state search - Practice location
- 6569 N Charles St, Towson, MD 21204
- Phone
- (410) 825-5150
- Enumerated
- Sep 7, 2005
- Record last updated
- Feb 14, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (410) 296-0809
- Medicaid ID
- 342561400 MD
- Medicare enrollment
- Enrolled (PECOS I20050120001013); may accept Medicare assignment
- Medical or professional school
- West Virginia University School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 613 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
- Thomas Guarnieri, M.D.Clinical Cardiac Electrophysiology Physician1275536591
- Catherine Wilson, SLPSpeech-Language Pathologist1639696123
Verify James K. Porterfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0030948Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
33% more Medicare Part D claims than the average cardiovascular disease physician in 2024
4,105 Medicare Part D claims for 827 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Metoprolol Succinate618 claims
- Eliquis607 claims
- Atorvastatin Calcium401 claims
- Rosuvastatin Calcium305 claims
- Xarelto244 claims
- Amlodipine Besylate223 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.
Bills Medicare through one group practice
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James K. Porterfield among 613 cardiovascular disease physician records in Maryland
James K. Porterfield, M.D. is one of 613 cardiovascular disease physician records with a practice address in Maryland. 76% 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, 78% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1980 · median 1997 among the 389 with a school on file
- Record last updated2013 · 67% 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 Maryland 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 Maryland
There are 613 cardiovascular disease physician records in Maryland.
All 613 in Maryland → Every provider in Towson → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Shilpi Ahmed, M.D.Towson, MD 212041194728584
- Mahmood Alikhan, M.D.Towson, MD 212041114994399
- Barbara Bell, MDBaltimore, MD 212041629120522
- Richard Biggs, M.D.Towson, MD 212041629071097
- Margaret Brennan, M.D.Baltimore, MD 212041851489207
- James Clarke, MDTowson, MD 212041215938832
- Mark Goldstein, MDTowson, MD 212041932102357
- Sidney Gottlieb, M.D.Towson, MD 212041477556793
Common questions
What is James K. Porterfield, M.D.'s NPI number?
James K. Porterfield, M.D.'s National Provider Identifier (NPI) is 1912991704, issued on Sep 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is James K. Porterfield, M.D. located?
The NPPES record lists a practice address at 6569 N Charles St, Towson, MD, 21204. Phone: (410) 825-5150. Providers update this record themselves, so call before visiting.
How can I verify James K. Porterfield, M.D.'s license?
NPPES lists Maryland license number D0030948, 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 James K. Porterfield, M.D. prescribe under Medicare Part D?
In 2024, James K. Porterfield, M.D. had 4,105 Medicare Part D claims for 827 beneficiaries; 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.