Daniel Leon Maison, MD
Internal Medicine Physician · Columbia, MD
Daniel Leon Maison, MD is an internal medicine physician with a practice address in Columbia, Maryland, and NPI 1700876018, issued on Oct 27, 2005. Check the license (Maryland D84710, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Daniel Leon Maison
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D84710 MD
A62106 CA
ME84214 FL
4301097415 MI
V0037 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5457 Twin Knolls RD Ste 100, Columbia, MD 21045
- Phone
- (410) 689-7400
- Enumerated
- Oct 27, 2005
- Record last updated
- Dec 11, 2024
- Medicare enrollment
- Enrolled (PECOS I20251030000181); may accept Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 5457 Twin Knolls RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Agnes AgbortarhFamily Nurse Practitioner1346901865
- Brittany Briscoe, NPFamily Nurse Practitioner1568014025
- Sanchez Brown, NURSE PRACTITIONERFamily Nurse Practitioner1003383779
- Ruth Abigail Bunolna, CRNP, DNPAdult Health Nurse Practitioner1144680281
- Lyla Correoso Thomas, M.D.Hospice and Palliative Medicine (Internal Medicine) Physician1083737399
- Deborah Fitzpatrick, M.D.Internal Medicine Physician1619939907
Verify Daniel Leon Maison in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D84710Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
108 Medicare Part D claims for 30 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Levothyroxine Sodium12 claims
- Quetiapine Fumarate11 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.
Daniel Leon Maison among 3,904 internal medicine physician records in Maryland
Daniel Leon Maison, 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1995 · median 2003 among the 2,445 with a school on file
- Record last updated2024 · 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).
93 internal medicine physician records list a practice address in Columbia
They are 93 of the 6,690 NPPES records with a practice address in Columbia, and 3,904 internal medicine physician records in Maryland.
All 3,904 in Maryland → Every provider in Columbia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Peter Cheng, M.D.Columbia, MD 210451437125515
- Bruce Conger, M.D.Columbia, MD 210451992706618
- Steven Diener, M.D.Columbia, MD 210451558362111
- Ho-Lai Feng, M.D.Columbia, MD 210451720033665
- Deborah Fitzpatrick, M.D.Columbia, MD 210451619939907
- Kendra Kay, M.D.Columbia, MD 210451417923905
- Jerry Levine, M.D.Columbia, MD 210451295736429
- Maria Munoz-Ritterbusch, MDColumbia, MD 210451548214414
Common questions
What is Daniel Leon Maison, MD's NPI number?
Daniel Leon Maison, MD's National Provider Identifier (NPI) is 1700876018, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Daniel Leon Maison, MD located?
The NPPES record lists a practice address at 5457 Twin Knolls RD Ste 100, Columbia, MD, 21045. Phone: (410) 689-7400. Providers update this record themselves, so call before visiting.
How can I verify Daniel Leon Maison, MD's license?
NPPES lists Maryland license number D84710, 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 Daniel Leon Maison, MD prescribe under Medicare Part D?
In 2024, Daniel Leon Maison, MD had 108 Medicare Part D claims for 30 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.