Dennis Aloysius Cullen, MD
Internal Medicine Physician · Oxon Hill, MD
Dennis Aloysius Cullen, MD is an internal medicine physician with a practice address in Oxon Hill, Maryland, and NPI 1104988054, issued on Dec 15, 2006. Check the license (Maryland D0040216, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Dennis Aloysius Cullen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D0040216 MD
MD14432 DC
Self-reported in NPPES; status is on the state search - Practice location
- 6188 Oxon Hill Road, Oxon Hill, MD 20745
- Phone
- (301) 839-2790
- Enumerated
- Dec 15, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (301) 839-3042
- Medicare enrollment
- Enrolled (PECOS I20110413000858); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1982
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 6188 Oxon Hill Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sharon Church, LCPCProfessional Counselor1013471317
- Edward Cullen, MDInternal Medicine Physician1083775126
- Glenda Dickonson, PH.D., LCPCProfessional Counselor1841754140
- Gary Horsey, M.A.Professional Counselor1184188500
- Nikeita Lawrence, LMSWClinical Social Worker1417413147
- Myra MooreClinical Social Worker1316403041
Verify Dennis Aloysius Cullen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0040216Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average internal medicine physician in 2024
5,152 Medicare Part D claims for 518 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 36 claims were for opioids.
Most prescribed
- Atorvastatin Calcium366 claims
- Losartan Potassium327 claims
- Levothyroxine Sodium247 claims
- Rosuvastatin Calcium216 claims
- Amlodipine Besylate178 claims
- Eliquis140 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 2 group practices
- Privia Care Center LLCWashington, DC
- Suburban/nrh Medical Rehabilitation IncBethesda, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis Aloysius Cullen among 3,904 internal medicine physician records in Maryland
Dennis Aloysius Cullen, MD is one of 3,904 internal medicine physician records with a practice address in Maryland. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 55% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1982 · median 2003 among the 2,445 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 internal medicine physician records list a practice address in Oxon Hill
They are 8 of the 425 NPPES records with a practice address in Oxon Hill, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Oxon Hill → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jinan Al-Naqeeb, MDOxon Hill, MD 207451225565914
- Edward Cullen, MDOxon Hill, MD 207451083775126
- Abdul Fadul, M.D.Oxon Hill, MD 207451841394954
- Rointan Farahifar, M.D.Oxon Hill, MD 207451912943531
- Manisha Jariwala, MDOxon Hill, MD 207451730174020
- Fatima Mohiuddin, M.D.Oxon Hill, MD 207451518311448
- Sylvester Okonkwo, MDOxon Hill, MD 207451801897582
- Ethiopia Abebe, MDSuitland, MD 207461588732580
Common questions
What is Dennis Aloysius Cullen, MD's NPI number?
Dennis Aloysius Cullen, MD's National Provider Identifier (NPI) is 1104988054, issued on Dec 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Aloysius Cullen, MD located?
The NPPES record lists a practice address at 6188 Oxon Hill Road, Oxon Hill, MD, 20745. Phone: (301) 839-2790. Providers update this record themselves, so call before visiting.
How can I verify Dennis Aloysius Cullen, MD's license?
NPPES lists Maryland license number D0040216, 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 Dennis Aloysius Cullen, MD prescribe under Medicare Part D?
In 2024, Dennis Aloysius Cullen, MD had 5,152 Medicare Part D claims for 518 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.