Physician Profile
Unclaimed ProfileAbout CASSIDY
Based in Boston, MA, Michael Ryan Cassidy, M.D. is listed in the NPI registry under surgical oncology. Michael graduated from Boston University School of Medicine in 2008. Michael is also listed as specializing in surgery of the hand and surgery. Medicare claims data shows Michael provided 150 services to 142 patients.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (617) 638-8442
- Email not available
Practice Locations
88 E NEWTON ST C515
Boston, MA 02118
Procedures Most Often Billed to Medicare
150 services · 142 patients · 7 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Partial removal of breast | Procedure | 19301 |
13 |
| Imaging of lymph nodes during surgery | Procedure | 38900 |
12 |
| Biopsy or removal of deep lymph nodes of underarm | Procedure | 38525 |
12 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
67 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
18 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
15 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
13 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other surgical oncology specialists in Boston 8
Same specialty, same city.
Trained at Boston University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2008 at Boston University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Partial removal of breast 8
Providers in MA who bill this service to Medicare most often.
Common questions
What is Dr. Cassidy's specialty?
Dr. Cassidy is a surgical oncology in Boston, MA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “SURGICAL ONCOLOGY”.
NPI registry
Where can I find Dr. Cassidy?
Dr. Cassidy is listed at 88 E NEWTON ST C515, Boston, MA 02118. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Cassidy?
The number on file is (617) 638-8442. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Cassidy?
Dr. Cassidy's National Provider Identifier is 1114186905. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Cassidy's medical education?
Dr. Cassidy attended Boston University School of Medicine, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Cassidy have?
Dr. Cassidy has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Cassidy known for?
According to Medicare billing data, Dr. Cassidy performs procedures including partial removal of breast, imaging of lymph nodes during surgery and biopsy or removal of deep lymph nodes of underarm, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Cassidy's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Cassidy. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.