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Edit this profileWhere to find Marissa Brennan, PA-C
- New London location main office
365 Montauk Ave, New London, CT 06320 - Westerly location
25 Wells St, Westerly, RI 02891
About Marissa Brennan
Listed in the NPI registry as a physician assistant — medical, Marissa Brennan, PA-C practices in New London, CT. Marissa is also listed as specializing in physician assistant. Medicare claims data shows Marissa provided 806 services to 518 patients. The services billed most often include subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes, hospital discharge day management, more than 30 minutes, and subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes. NPI 1902324205 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
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
- (860) 271-4364
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
365 MONTAUK AVE
New London, CT 06320
25 Wells St
Westerly, RI 02891
Conditions and Services Within This Provider's Scope
Within Physician Assistant - Medical 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
Digestive
Most searched conditions
Allergies
Blood
Bone and joint
Digestive health
Ear, Nose & Throat
Endocrine
Eye Care
Foot and ankle
General Health
Hair and scalp
Headache and brain
Heart & Circulation
Hormones
Infections
Injury
Men's Health
Mental Health
Metabolic
Nerve conditions
Neurology
Pain
Respiratory
Sexual Health
Skin
Skin cancer
Skin conditions
Sleep
Women's Health
Procedures & services
Diagnostic Tests
- COVID-19 Rapid Test
- Rapid Flu Swab
- Urine Pregnancy Test
- Mono Rapid Test
- Rapid strep testing
- TB Skin Test
- Urine Drug Screen
Exams
- School and camp physical
- DOT Physical Exam
- Medicare annual wellness visit
- Pre-Employment Physical
Most searched procedures
Allergies
- Allergy Testing and Shots
Counseling
Dermatology
Ear, Nose & Throat
- Earwax removal
- Removal of Foreign Object from Ear or Nose
Evaluations
General Care
Heart & Circulation
- EKG
Heart health
- Heart monitor
Hormones
Injections
Injury Care
- Burn Treatment
- Splinting and temporary casting
Lab tests
Mental Health
Metabolic
- Weight Loss Medication Consultation
Minor surgery
Minor Surgery
- Incision and drainage of an abscess
- Ingrown toenail removal
- Minor laceration repair
- Superficial foreign-body removal
Pain Management
Prevention
Respiratory
Screening
- Blood Pressure Check and Monitoring
- STI and STD Screening
Skin procedures
- Mole Check
- Mole removal
- Wart Removal
Treatments
Virtual care
Women's Health
Women's health
Procedures Most Often Billed to Medicare
806 services · 518 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
377 | More than most peers in Physician Assistant — Medical |
| Hospital discharge day management, more than 30 minutes | Office visit | 99239 |
143 | More than most peers in Physician Assistant — Medical |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
140 | More often than most peers in Physician Assistant — Medical |
| Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes | Office visit | 99231 |
94 | More often than most peers in Physician Assistant — Medical |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
30 | As often as other peers in Physician Assistant — Medical |
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
22 | As often as other peers in Physician Assistant — Medical |
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 8
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 physician assistants in New London 8
Same specialty, same city.
More connections — 16 related providers in 2 groups
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2017 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Marissa Brennan specialize in?
Marissa Brennan is a physician assistant in New London, CT. That is the designation recorded for this NPI in the federal registry, where it is listed as “Physician Assistant — Medical”.
NPI registry
Where is Marissa Brennan located?
Marissa Brennan is listed at 365 Montauk Ave, New London, CT 06320. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Marissa Brennan's phone number?
The number on file is (860) 271-4364. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Marissa Brennan?
Marissa Brennan's National Provider Identifier is 1902324205. 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 Marissa Brennan train?
Marissa Brennan attended Other, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Marissa Brennan have?
Marissa Brennan has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What does Marissa Brennan do most often?
According to Medicare billing data, Marissa Brennan the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Marissa Brennan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Marissa Brennan. If this is you, claiming it is free.
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Guide.md listings do not constitute medical advice or an endorsement.