Ariel Fromowitz, MD
Hematology & Oncology Physician · Baltimore, MD
Ariel Fromowitz, MD is a hematology & oncology physician with a practice address in Baltimore, Maryland, and NPI 1043748577, issued on May 29, 2017. Check the license (Maryland D0100549, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Ariel Fromowitz
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- D0100549 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 328-1230
- Enumerated
- May 29, 2017
- Record last updated
- Aug 28, 2024
- Medicare enrollment
- Enrolled (PECOS I20240912000305); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2017
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 317 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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- Ifedayo Abiola-Matthew, CRNPAcute Care Nurse Practitioner1033781117
Verify Ariel Fromowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0100549Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $207.12
4 payments; by number, the most common kind was food and beverage; the largest payer was Jazz Pharmaceuticals 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 one group practice
- University OF Maryland Oncology Associates PABaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ariel Fromowitz among 317 hematology & oncology physician records in Maryland
Ariel Fromowitz, MD 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 2017, is newer than 89% of them.
- NPI issued2017 · 89% of these records are older, 9% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2017 · median 2000 among the 185 with a school on file
- Record last updated2024 · 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
- Maria Baer, MDBaltimore, MD 212011700881802
- Arnob Banerjee, MDBaltimore, MD 212011538221494
- Trishna Goswami, M.D.Baltimore, MD 212011336201474
- Jack Hong, M.D.Baltimore, MD 212011033186085
- Yixing Jiang, MDBaltimore, MD 212011720037971
- Mehmet Kocoglu, MDBaltimore, MD 212011114001138
- Naimish Pandya, MDBaltimore, MD 212011497709356
- Douglas Ross, MDBaltimore, MD 212011861447666
Common questions
What is Ariel Fromowitz, MD's NPI number?
Ariel Fromowitz, MD's National Provider Identifier (NPI) is 1043748577, issued on May 29, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Ariel Fromowitz, MD located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 328-1230. Providers update this record themselves, so call before visiting.
How can I verify Ariel Fromowitz, MD's license?
NPPES lists Maryland license number D0100549, 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.
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.