Alexander Joseph Ambinder, M.D.
Hematology & Oncology Physician · Baltimore, MD
Alexander Joseph Ambinder, M.D. is a hematology & oncology physician with a practice address in Baltimore, Maryland, and NPI 1629411558, issued on Apr 10, 2013. Check the license (Maryland D81117, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Alexander Joseph Ambinder
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- D81117 MD
D0081117 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1650 Orleans St # 1186, Baltimore, MD 21287
- Phone
- (410) 614-4459
- Enumerated
- Apr 10, 2013
- Record last updated
- Mar 16, 2026
- Fax
- (410) 955-0125
- Medicare enrollment
- Enrolled (PECOS I20170801000207); may accept Medicare assignment
- Medical or professional school
- Emory University School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 317 in Maryland → Look up another NPI →
Also registered at 1650 Orleans St # 1186
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ellery Altshuler, MDHematology & Oncology Physician1467080929
- May Tun Saung, M.D.Hematology & Oncology Physician1508187311
- Fyza Shaikh, MD, PHDInternal Medicine Physician1669890638
Verify Alexander Joseph Ambinder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D81117Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
475 Medicare Part D claims for 56 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims. 14 claims were for opioids.
Most prescribed
- Valacyclovir57 claims
- Venclexta24 claims
- Prednisone20 claims
- Acyclovir18 claims
- Sulfamethoxazole-Trimethoprim17 claims
- Amlodipine Besylate16 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): 74.4 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: $51.77
1 payment: food and beverage; the largest payer was Melinta Therapeutics, LLC. 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
- Johns Hopkins UniversityColumbia, MD
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexander Joseph Ambinder among 317 hematology & oncology physician records in Maryland
Alexander Joseph Ambinder, M.D. is one of 317 hematology & oncology physician records with a practice address in Maryland. 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 2013, is newer than 77% of them.
- NPI issued2013 · 77% of these records are older, 19% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2013 · median 2000 among the 185 with a school on file
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Maryland
There are 317 hematology & oncology physician records in Maryland.
All 317 in Maryland → Every provider in Baltimore → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ahmad Al-Homsi, MDBaltimore, MD 212871104808047
- Ani Balmanoukian, M.D.Baltimore, MD 212871063558682
- Luis Diaz, M.D.Baltimore, MD 212871689601460
- Josephine Feliciano, M.D.Baltimore, MD 212871609023373
- Ivana Gojo, M.D.Baltimore, MD 212871194765677
- Lukasz Gondek, M.D.Baltimore, MD 212871073755765
- Noah Hahn, M.D.Baltimore, MD 212871376582197
- Christine Hann, M.D., PH.D.Baltimore, MD 212871336295021
Common questions
What is Alexander Joseph Ambinder, M.D.'s NPI number?
Alexander Joseph Ambinder, M.D.'s National Provider Identifier (NPI) is 1629411558, issued on Apr 10, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Alexander Joseph Ambinder, M.D. located?
The NPPES record lists a practice address at 1650 Orleans St # 1186, Baltimore, MD, 21287. Phone: (410) 614-4459. Providers update this record themselves, so call before visiting.
How can I verify Alexander Joseph Ambinder, M.D.'s license?
NPPES lists Maryland license number D81117, 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 Alexander Joseph Ambinder, M.D. prescribe under Medicare Part D?
In 2024, Alexander Joseph Ambinder, M.D. had 475 Medicare Part D claims for 56 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Alexander Joseph Ambinder, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.4 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.