Sydney Morss Dy, M.D.
Medical Oncology Physician · Baltimore, MD
Sydney Morss Dy, M.D. is a medical oncology physician with a practice address in Baltimore, Maryland, and NPI 1003863267, issued on May 30, 2006. Check the license (Maryland D53590, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Sydney Morss Dy
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- D53590 MD
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Wolfe St, Baltimore, MD 21287
- Phone
- (410) 955-9434
- Enumerated
- May 30, 2006
- Record last updated
- Oct 12, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 400200800 MD
- Medicare enrollment
- Enrolled (PECOS I20070502000526); may accept Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 224 in Maryland → Look up another NPI →
Also registered at 600 N Wolfe St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Abdulrahman Abodarahim, MBBCHOphthalmology Physician1770182560
- Aida Abou-ZamzamStudent in an Organized Health Care Education/Training Program1891456034
- Mya AbousyStudent in an Organized Health Care Education/Training Program1700422169
- Christopher Abularrage, MDVascular Surgery Physician1063675908
- Sahaja Acharya, M.D.Radiation Oncology Physician1639436603
- Stephen Achuff, M.D.Cardiovascular Disease Physician1326001033
Verify Sydney Morss Dy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D53590Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average medical oncology physician in 2024
1,810 Medicare Part D claims for 229 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. 48 claims were for opioids.
Most prescribed
- Atorvastatin Calcium112 claims
- Levothyroxine Sodium89 claims
- Rosuvastatin Calcium69 claims
- Amlodipine Besylate68 claims
- Losartan Potassium59 claims
- Gabapentin48 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).
Bills Medicare through one group practice
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sydney Morss Dy among 224 medical oncology physician records in Maryland
Sydney Morss Dy, M.D. is one of 224 medical oncology physician records with a practice address in Maryland. 67% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 53% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1995 · median 2000 among the 128 with a school on file
- Record last updated2015 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Maryland
There are 224 medical oncology physician records in Maryland.
All 224 in Maryland → Every provider in Baltimore → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Richard Ambinder, M.D.Baltimore, MD 212871528022407
- Mary Armanios, M.D.Baltimore, MD 212871588628390
- Atul Bedi, M.D.Baltimore, MD 212871760447114
- Julie Brahmer, M.D.Baltimore, MD 212871982661989
- Patrick Brown, M.D.Baltimore, MD 212871154389633
- Michael Carducci, M.D.Baltimore, MD 212871952369977
- Allen Chen, M.D.Baltimore, MD 212871114976065
- Curt Civin, M.D.Baltimore, MD 212871962453076
Common questions
What is Sydney Morss Dy, M.D.'s NPI number?
Sydney Morss Dy, M.D.'s National Provider Identifier (NPI) is 1003863267, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sydney Morss Dy, M.D. located?
The NPPES record lists a practice address at 600 N Wolfe St, Baltimore, MD, 21287. Phone: (410) 955-9434. Providers update this record themselves, so call before visiting.
How can I verify Sydney Morss Dy, M.D.'s license?
NPPES lists Maryland license number D53590, 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 Sydney Morss Dy, M.D. prescribe under Medicare Part D?
In 2024, Sydney Morss Dy, M.D. had 1,810 Medicare Part D claims for 229 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Sydney Morss Dy, 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.