Physician Profile
Wassim Assaf, MD
Unclaimed ProfileAbout Dr. Assaf
Based in Auburn, MA, Wassim Assaf, MD is listed in the NPI registry under sleep medicine. Wassim is also listed as specializing in internal medicine. According to Medicare claims data, Wassim cared for 480 Medicare patients across 753 services. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, and sleep study including heart rate, breathing, and sleep time.
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
- (774) 772-7058
- Email not available
Practice Locations
48 AUBURN ST STE 1
Auburn, MA 01501
157 Union St
Marlborough, MA 01752
119 Belmont St
Worcester, MA 01605
55 Lake Ave N
Worcester, MA 01655
Conditions Commonly Evaluated or Treated
Within Sleep 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
Most searched conditions
- Insomnia
- Narcolepsy
- Restless legs syndrome
- Sleep apnea
- Snoring
Breathing disruption
- Shallow Breathing In Sleep
- Suffocation Feelings In Bed
- Waking Up Gasping Or Choking
Circadian rhythm
- Antisocial personality disorder
- Delayed Sleep Phase
- Irregular Sleep-Wake Schedule
- Jet Lag Disorder
- Non-24-Hour Body Clock
- Shift Work Sleep Problems
- Sleep problems
Daytime alertness
- Daytime Exhaustion
- Excessive daytime sleepiness
- Excessive Sleeping
- Sleep Grogginess
- Sudden Muscle Weakness When Laughing
Excessive sleepiness
- Sleeping Beauty Syndrome
General sleep
- Hot flashes
- Nighttime Acid Reflux
- Pregnancy Sleep Problems
General symptoms
- Waking Up With Headaches
Hormonal sleep
- Menopause Sleep Problems
Insomnia & anxiety
- Sleep Anxiety
Movement disorders
- Head Banging While Sleeping
- Restless Arm Syndrome
Neurological sleep
- Nighttime Seizures
Parasomnia
- Acting Out Dreams
- Bedwetting
- Chronic Nightmares
- Exploding Head Syndrome
- Hallucinations While Falling Asleep
- Sleep Eating
- Sleep Groaning
- Sleep Paralysis
- Sleep Problems in Kids
- Sleep Talking
- Sleepwalking
Parasomnias
- Sexsomnia
Pediatric sleep
- Child Sleep Problems
Sleep breathing
- Mouth Breathing While Sleeping
- Upper Airway Resistance Syndrome
Sleep disruption
- Waking Up to Pee
Sleep movement
- Nighttime Leg Kicking
- Sleep Twitches
- Teeth Grinding In Sleep
Sleep quality
- Restless Sleep
- Waking Up In Panic
Sleep timing
- Waking Up Too Early
Procedures & services
Most searched procedures
- CPAP titration
- Home sleep test
- Sleep study
Behavioral therapy
- Child Sleep Habit Coaching
- CPAP Desensitization Therapy
- Sleep counseling
- Sleep hygiene counseling
- Sleep Restriction Therapy
- Stimulus Control Therapy
Circadian therapy
- Light Box Therapy
- Melatonin Timing Protocol
Consultation
- CPAP Alternatives Consultation
- Sleep Choking And Acid Reflux Management
CPAP & positive airway pressure
- Adaptive Servo-Ventilation Setup
- Auto-CPAP Setup
- BiPAP therapy
- CPAP Heated Tubing & Humidifier Setup
- CPAP Mask Fitting
- CPAP Pressure Adjustment
Device management
- Central Sleep Apnea Pacemaker Setup
- Inspire Therapy Programming
Devices
- Nasal Dilator Fitting For Snoring
- Nasal Expiratory Valve Fitting
Diagnostic testing
- Daytime Nap Study
- Drug-induced sleep endoscopy
- Overnight Oxygen Tracking
- Sleep Alertness Test
- Sleep Tracker Watch Monitoring
Diagnostics
- Actigraphy Sleep Tracking
- Nasal Airflow Testing
- Overnight Brain Wave Monitoring
Evaluations
- DOT Sleep Apnea Clearance
- Pediatric Sleep Apnea Evaluation
Lifestyle & devices
- Positional Sleep Therapy
Medical management
- Sleep Medication Review & Tapering
Oral appliances
- Night Guard For Clenching
- Oral Appliance Adjustment
- Sleep Apnea Mouthpiece
- Snoring Mouth Guard Fitting
Respiratory care
- Nighttime Oxygen Therapy Setup
- Non-Invasive Ventilation Setup
Snoring & airway
- Laser Snoring Treatment
- Radiofrequency Tissue Reduction For Snoring
Surgery
- Tonsil And Adenoid Removal For Sleep Apnea
Surgical & implants
- Deviated Septum Surgery For Sleep
- Expansion Sphincter Pharyngoplasty
- Hypoglossal nerve stimulator implantation
- Jaw Advancement Surgery
- Palate Stiffening Procedure
- Tongue Base Reduction Surgery
- Turbinate Shrinking For Breathing
- Uvulopalatopharyngoplasty
Therapy
- Myofunctional Therapy for Tongue Thrust
- Sleep Dread Desensitization
Procedures Most Often Billed to Medicare
753 services · 480 patients · 12 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Sleep study including heart rate, breathing, and sleep time | Treatment | 95800 |
76 | More often than most peers in Sleep Medicine |
| Sleep study in sleep lab with continuous airway pressure (6 years or older) | Treatment | 95811 |
64 | More often than most peers in Sleep Medicine |
| Sleep study in sleep lab (6 years or older) | Treatment | 95810 |
56 | More often than most peers in Sleep Medicine |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
155 | More often than most peers in Sleep Medicine |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
111 | More often than most peers in Sleep Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
74 | As often as other peers in Sleep Medicine |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
52 | As often as other peers in Sleep Medicine |
| Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | Office visit | 99454 |
43 | Less often than most peers in Sleep Medicine |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
40 | More often than most peers in Sleep Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
36 | Less often than most peers in Sleep 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.
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.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2004 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Sleep study including heart rate, breathing, and sleep time 8
Providers in MA who bill this service to Medicare most often.
Common questions
What is Dr. Assaf's specialty?
Dr. Assaf is a sleep medicine in Auburn, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Dr. Assaf?
Dr. Assaf is listed at 48 Auburn St Ste 1, Auburn, MA 01501. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Assaf?
The number on file is (774) 772-7058. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Assaf's NPI number?
Dr. Assaf's National Provider Identifier is 1548400278. 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. Assaf's medical education?
Dr. Assaf attended Other, graduating in 2004. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Assaf been practicing?
Dr. Assaf has 22 years experience. Calculated from a graduation year of 2004, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Assaf known for?
According to Medicare billing data, Dr. Assaf provides treatments such as sleep study including heart rate, breathing, and sleep time and sleep study in sleep lab with continuous airway pressure, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Assaf confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Assaf. 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.