Samir Shankar Ambrale, MD
Hematology & Oncology Physician · Tamuning, GU
Samir Shankar Ambrale, MD is a hematology & oncology physician with a practice address in Tamuning, Guam, and NPI 1780990382, issued on Aug 20, 2010. Check the license (Guam M-1954, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Samir Shankar Ambrale
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- M-1954 GU
Self-reported in NPPES; status is on the state search - Practice location
- 548 Marine Corps Dr, Tamuning, GU 96913
- Phone
- (671) 646-5825
- Enumerated
- Aug 20, 2010
- Record last updated
- Dec 30, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (671) 647-3517
- Medicare enrollment
- Enrolled (PECOS I20160902001992); accepts Medicare assignment
- Entity
- Type 1 · individual
3 nearest hematology & oncology physician records → All 4 in Guam → Look up another NPI →
Verify Samir Shankar Ambrale in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M-1954Check 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 hematology & oncology physician in 2024
96 Medicare Part D claims for 18 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims.
Most prescribed
- Anastrozole24 claims
- Exemestane17 claims
- Tagrisso11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 88.1 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).
Industry payments in 2024: $140.89
3 payments; by number, the most common kind was food and beverage; the largest payer was Tempus AI, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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 2 group practices
- Guam Memorial HospitalTamuning, GU
- Takecare Insurance Company IncTamuning, GU
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology & Oncology Physician providers in Guam
There are 4 hematology & oncology physician records in Guam.
All 4 in Guam → Every provider in Tamuning → Hematology & Oncology Physician nationwide →
The 3 hematology & oncology physician records with the nearest ZIP codes
- Paul Coty, MDTamuning, GU 969131386738862
- Samuel Friedman, M.D.Tamuning, GU 969131891747069
- Beatrice PretiLondon, GU 000001790481760
Common questions
What is Samir Shankar Ambrale, MD's NPI number?
Samir Shankar Ambrale, MD's National Provider Identifier (NPI) is 1780990382, issued on Aug 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Samir Shankar Ambrale, MD located?
The NPPES record lists a practice address at 548 Marine Corps Dr, Tamuning, GU, 96913. Phone: (671) 646-5825. Providers update this record themselves, so call before visiting.
How can I verify Samir Shankar Ambrale, MD's license?
NPPES lists Guam license number M-1954, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
How much does Samir Shankar Ambrale, MD prescribe under Medicare Part D?
In 2024, Samir Shankar Ambrale, MD had 96 Medicare Part D claims for 18 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Samir Shankar Ambrale, MD's MIPS final score?
The 2023 MIPS final score is 88.1 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.