Physician Profile
Margaret M. Hayes, MD
Unclaimed ProfileAbout Dr. Hayes
Based in Boston, MA, Margaret M. Hayes, MD is listed in the NPI registry under critical care medicine. Margaret graduated from Tufts University School of Medicine in 2008. According to Medicare claims data, Margaret cared for 128 Medicare patients across 220 services. The services billed most often include critical care, first 30-74 minutes, subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, and insertion of non-tunneled central venous tube for infusion (5 years or older).
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (617) 667-5864
- Email not available
Practice Locations
330 BROOKLINE AVE
Boston, MA 02215
Conditions Commonly Evaluated or Treated
Within Critical Care Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Blood & metabolism
Brain & nerve
Brain & Nervous System
- Brain Swelling
- Fainting and syncope
- ICU Delirium and Confusion
- Ischemic stroke
- Status epilepticus
- Traumatic brain injury
Breathing & Lungs
Digestive emergencies
Environmental emergencies
Heart & Circulation
Heart & vascular
Infection & Sepsis
Infections
Injury & trauma
Lung & breathing
Medication reactions
Metabolic Emergencies
Muscle & kidney
Organ Failure
Pregnancy emergencies
Recovery
Substance emergencies
Toxicity & Trauma
Procedures & services
Airway & Breathing
- Airway Scope and Suctioning
- Breathing machine management
- Chest tube insertion
- Emergency intubation
- Tracheostomy
Airway procedures
Brain procedures
Breathing support
Consultation & Recovery
Digestive procedures
Emergency surgery
Fluid Drainage
Heart procedures
Heart support
ICU recovery
Lab tests & monitoring
Life Support
- Cardioversion for rapid heartbeat
- CPR and defibrillation
- ECMO (Heart-Lung Machine)
- Stomach Positioning for Lung Failure
- Targeted Body Cooling
- Temporary Pacemaker Placement
- Ventilator Support
Medication therapies
Medications & Infusions
Monitoring
- Bladder and Belly Pressure Check
- Brain Blood Flow Ultrasound
- Brain Pressure Monitor Placement
- Continuous Brain Wave Monitoring
- Emergency ultrasound
- Heart Pressure Catheter Monitoring
- Lumbar puncture
Nutrition & Digestion
Nutrition support
Organ Support
Vascular Access
Procedures Most Often Billed to Medicare
220 services · 128 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | Procedure | 36556 |
16 | As often as other peers in Critical Care Medicine |
| Insertion of artery tube for blood sampling or infusion through skin | Procedure | 36620 |
13 | Less often than most peers in Critical Care Medicine |
| Critical care, first 30-74 minutes | Office visit | 99291 |
172 | More often than most peers in Critical Care Medicine |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
19 | Less often than most peers in Critical Care Medicine |
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.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
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 critical care physicians in Boston 8
Same specialty, same city.
More connections — 24 related providers in 3 groups
Trained at Tufts University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at Tufts University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of non-tunneled central venous tube for infusion (5 years or older) 8
Providers in MA who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Hayes?
Dr. Hayes is a critical care physician in Boston, MA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Critical Care Medicine”.
NPI registry
What is Dr. Hayes's address?
Dr. Hayes is listed at 330 Brookline Ave, Boston, MA 02215. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Hayes?
The number on file is (617) 667-5864. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Hayes's NPI number?
Dr. Hayes's National Provider Identifier is 1659545960. 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
Where did Dr. Hayes train?
Dr. Hayes attended Tufts University School of Medicine, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Hayes been practicing?
Dr. Hayes has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Hayes perform?
According to Medicare billing data, Dr. Hayes performs procedures including insertion of non-tunneled central venous tube for infusion and insertion of artery tube for blood sampling or infusion through skin, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Hayes confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Hayes. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.