Rengaraju Ramasamy, MD
Internal Medicine Physician · Oka Tamuning, GU
Rengaraju Ramasamy, MD is an internal medicine physician with a practice address in Oka Tamuning, Guam, and NPI 1720284425, issued on Jun 21, 2007. Check the license (Guam M001418, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rengaraju Ramasamy
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- M001418 GU
Self-reported in NPPES; status is on the state search - Practice location
- 850 Governor Carlos Camacho Road, Oka Tamuning, GU 96913
- Phone
- (671) 647-2418
- Enumerated
- Jun 21, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (671) 649-5508
- Medicare enrollment
- Enrolled (PECOS I20170222002586); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 24 in Guam → Look up another NPI →
Also registered at 850 Governor Carlos Camacho Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Aaron Johansen, MDEmergency Medicine Physician1639226863
- Robert Kwok, MDDiagnostic Radiology Physician1710043609
- James Last, MDEmergency Medicine Physician1760539472
Verify Rengaraju Ramasamy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M001418Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
29 Medicare Part D claims, against an average of 3,176 among the 108,855 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Guam Memorial HospitalTamuning, GU
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rengaraju Ramasamy among 24 internal medicine physician records in Guam
Rengaraju Ramasamy, MD is one of 24 internal medicine physician records with a practice address in Guam. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 33% of them.
- NPI issued2007 · 33% of these records are older, 42% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1983 · median 1993 among the 16 with a school on file
- Record last updated2007 · 50% 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 Guam practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in Oka Tamuning
They are 2 of the 13 NPPES records with a practice address in Oka Tamuning, and 24 internal medicine physician records in Guam.
All 24 in Guam → Every provider in Oka Tamuning → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Leopoldo Arcilla, MDMangilao, GU 969131144364753
- Ellen Bez, MDTamuning, GU 969131649484197
- Young Chang, MDTamuning, GU 969131639218290
- Alix Chenet, MDOka Tamuning, GU 969131669530507
- Vincent Duenas, MDTamuning, GU 969131831244888
- Pablo Guzman, M.D.Tamuning, GU 969131023081304
- Johnny Lim, M.D.Tamuning, GU 969131265494868
- Doris Lim, M.D.Tamuning, GU 969131295790178
Common questions
What is Rengaraju Ramasamy, MD's NPI number?
Rengaraju Ramasamy, MD's National Provider Identifier (NPI) is 1720284425, issued on Jun 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Rengaraju Ramasamy, MD located?
The NPPES record lists a practice address at 850 Governor Carlos Camacho Road, Oka Tamuning, GU, 96913. Phone: (671) 647-2418. Providers update this record themselves, so call before visiting.
How can I verify Rengaraju Ramasamy, MD's license?
NPPES lists Guam license number M001418, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
How much does Rengaraju Ramasamy, MD prescribe under Medicare Part D?
In 2024, Rengaraju Ramasamy, MD had 29 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Rengaraju Ramasamy, MD's MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.