Meghan Marmillion, MD
Hospitalist Physician · Baltimore, MD
Meghan Marmillion, MD is a hospitalist physician with a practice address in Baltimore, Maryland, and NPI 1427347699, issued on Mar 28, 2011. Check the license (Maryland D78056, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Meghan Marmillion
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- D78056 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 328-7605
- Enumerated
- Mar 28, 2011
- Record last updated
- Sep 9, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (410) 328-7607
- Medicaid ID
- 494902100 MD
- Medicare enrollment
- Enrolled (PECOS I20140723001679); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 397 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Meghan Marmillion in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D78056Check 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 hospitalist physician in 2024
18 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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
- University OF Maryland Physicians PABaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Meghan Marmillion among 397 hospitalist physician records in Maryland
Meghan Marmillion, MD is one of 397 hospitalist physician records with a practice address in Maryland. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 44% of them.
- NPI issued2011 · 44% of these records are older, 51% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2011 · median 2010 among the 330 with a school on file
- Record last updated2014 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Maryland
There are 397 hospitalist physician records in Maryland.
All 397 in Maryland → Every provider in Baltimore → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- George Baffoe-Bonnie, M.D.Baltimore, MD 212011780642090
- Lei Jia Chen, MDBaltimore, MD 212011144422049
- Kimberly Clark, PA-CBaltimore, MD 212011144368226
- Philip Dittmar, MDBaltimore, MD 212011932243342
- Kathryn Eshelman, M.D.Baltimore, MD 212011558375147
- Mangla Gulati, M.D.Baltimore, MD 212011740259274
- Cheryl Hepp, MDBaltimore, MD 212011023152444
- Saverio Mirarchi, M.D.Baltimore, MD 212011639124365
Common questions
What is Meghan Marmillion, MD's NPI number?
Meghan Marmillion, MD's National Provider Identifier (NPI) is 1427347699, issued on Mar 28, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Meghan Marmillion, MD located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 328-7605. Providers update this record themselves, so call before visiting.
How can I verify Meghan Marmillion, MD's license?
NPPES lists Maryland license number D78056, 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 Meghan Marmillion, MD prescribe under Medicare Part D?
In 2024, Meghan Marmillion, MD had 18 Medicare Part D claims; the average among hospitalist physician prescribers was 521. 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.