Marissa Amelia Watts, M.D.
Internal Medicine Physician · Columbia, MD
Marissa Amelia Watts, M.D. is an internal medicine physician with a practice address in Columbia, Maryland, and NPI 1720345358, issued on Apr 20, 2012. Check the license (Maryland D80923, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Marissa Amelia Watts
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- D80923 MD
4301101114 MI
Self-reported in NPPES; status is on the state search - Practice location
- 5755 Cedar LN, Columbia, MD 21044
- Phone
- (410) 720-8695
- Enumerated
- Apr 20, 2012
- Record last updated
- Jan 15, 2025
- Fax
- (410) 720-8580
- Medicare enrollment
- Enrolled (PECOS I20160426001285); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 2012
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,904 in Maryland → Look up another NPI →
Also registered at 5755 Cedar LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nancy Acs, LCSW-CClinical Social Worker1033411814
- Eniola Adejumo, MDHospitalist Physician1104110675
- Farzaneh Agahi, DNPCritical Care Medicine Registered Nurse1902661283
- Nickolas Agathis, M.D. (IN MAY 2015)Pediatrics Physician1740676535
Verify Marissa Amelia Watts in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D80923Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
338 Medicare Part D claims for 143 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 35 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass18 claims
- Amlodipine Besylate16 claims
- Furosemide14 claims
- Pantoprazole Sodium14 claims
- Oxycodone Hcl13 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.
Industry payments in 2024: $99.08
5 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Usacs Integrated Acute Care Services OF Maryland LLCRockville, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Amelia Watts among 3,904 internal medicine physician records in Maryland
Marissa Amelia Watts, M.D. 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 2012, is newer than 69% of them.
- NPI issued2012 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2012 · median 2003 among the 2,445 with a school on file
- Record last updated2025 · 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
- Abeda Ali Khan, M.D.Columbia, MD 210441407894140
- Mateen Awan, MDColumbia, MD 210441316918303
- Kevin Carlson, MDColumbia, MD 210441811981905
- Bonita Coe, M.D.Columbia, MD 210441851357065
- Rebecca Elon, M.D.Columbia, MD 210441720023567
- Melinda Kantsiper, M.D.Columbia, MD 210441275539421
- Ayesha Khalil, M.DColumbia, MD 210441730136086
- Andrew Lazris, MDColumbia, MD 210441427023944
Common questions
What is Marissa Amelia Watts, M.D.'s NPI number?
Marissa Amelia Watts, M.D.'s National Provider Identifier (NPI) is 1720345358, issued on Apr 20, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Amelia Watts, M.D. located?
The NPPES record lists a practice address at 5755 Cedar LN, Columbia, MD, 21044. Phone: (410) 720-8695. Providers update this record themselves, so call before visiting.
How can I verify Marissa Amelia Watts, M.D.'s license?
NPPES lists Maryland license number D80923, 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 Marissa Amelia Watts, M.D. prescribe under Medicare Part D?
In 2024, Marissa Amelia Watts, M.D. had 338 Medicare Part D claims for 143 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.