Ronnie C. Marrache, MD
Hospitalist Physician · Waterville, ME
Ronnie C. Marrache, MD is a hospitalist physician with a practice address in Waterville, Maine, and NPI 1821172396, issued on Oct 24, 2006. Check the license (Maine 014513, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ronnie C. Marrache
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License numbers
- 014513 ME
040730 GA
Self-reported in NPPES; status is on the state search - Practice location
- 109 Silver St, Waterville, ME 04901
- Phone
- (207) 872-0866
- Enumerated
- Oct 24, 2006
- Record last updated
- May 24, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (207) 872-8098
- Medicaid ID
- 132900099 ME
- Medicare enrollment
- Enrolled (PECOS I20170621003240); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 245 in Maine → Look up another NPI →
Also registered at 109 Silver St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lisa Marrache, MDFamily Medicine Physician1124130638
Verify Ronnie C. Marrache in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 014513Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average hospitalist physician in 2024
31 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Warfarin Sodium28 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
- Adventist Health System Georgia IncChatsworth, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronnie C. Marrache among 245 hospitalist physician records in Maine
Ronnie C. Marrache, MD is one of 245 hospitalist physician records with a practice address in Maine. 90% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 71% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated1994 · median 2012 among the 206 with a school on file
- Record last updated2017 · 42% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Maine
There are 245 hospitalist physician records in Maine.
All 245 in Maine → Every provider in Waterville → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Ahmed Aldilaimi, MDWaterville, ME 049011497721849
- Benjamin Brown, MDWaterville, ME 049011235216094
- Todd Miller, M.D.Waterville, ME 049011972540912
- Kaitlyn Lamarche, MDBelfast, ME 049151306296744
- Vito Longobardi, MDBelfast, ME 049151447263900
- Benjamin Moore, MDBelfast, ME 049151588398960
- Colleen Murphy, M.D.Belfast, ME 049151306018296
- Lazarus Onwuka, D.O., M.D.Belfast, ME 049151700269362
Common questions
What is Ronnie C. Marrache, MD's NPI number?
Ronnie C. Marrache, MD's National Provider Identifier (NPI) is 1821172396, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronnie C. Marrache, MD located?
The NPPES record lists a practice address at 109 Silver St, Waterville, ME, 04901. Phone: (207) 872-0866. Providers update this record themselves, so call before visiting.
How can I verify Ronnie C. Marrache, MD's license?
NPPES lists Maine license number 014513, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ronnie C. Marrache, MD prescribe under Medicare Part D?
In 2024, Ronnie C. Marrache, MD had 31 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.