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Edit this profileAt a glance
- 75 Francis St, Boston, MA 02115
About Dr. Brennan
Patrick Brennan, M.D., PhD is a healthcare provider in Boston, MA specializing in allergy/immunology. Patrick trained at Perelman School of Med at the University of Pennsylvania, graduating in 2005. Patrick is also listed as specializing in internal medicine. According to Medicare claims data, Patrick cared for 95 Medicare patients across 307 services. The services billed most often include test for allergy using allergenic extract, new patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more, and established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more. This provider record is associated with NPI 1053458406.
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
- (617) 732-9850
- Email not available
Practice Locations
75 FRANCIS ST
Boston, MA 02115
Conditions Commonly Evaluated or Treated
Within Allergy and Immunology 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
Allergies
Digestive
Drug allergies
Drug allergy
Emergency
Environmental
Eye
Food allergies
- Egg Allergy
- Milk Allergy
- Peanut Allergy
- Shellfish Allergy
- Soy Allergy
- Tree Nut Allergy
- Wheat Allergy
Immune conditions
Immunology
- Common Variable Immunodeficiency
- Frequent Infections
- Hereditary Angioedema
- Mast Cell Activation Syndrome
- Weak Immune System
Lung conditions
Respiratory
Sinus
Sinus conditions
Skin
Skin conditions
Procedures & services
Most searched procedures
Allergy treatments
- Allergy Drops
- Asthma Biologics
- Food Desensitization
- Peanut Allergy Pill Treatment
- Sublingual Dust Mite Treatment
- Under-The-Tongue Allergy Tablets
Diagnostic
- Asthma challenge test
- Drug Challenge Test
- Exercise Challenge Breathing Test
- Exhaled nitric oxide test
- Ice Cube Test for Cold Allergy
- Immune System Blood Test
- Nasal endoscopy
- Oral Food Challenge
- Peak Flow Test
- Penicillin Allergy Testing
- Spirometry
- Tryptase Blood Test
- Vaccine Challenge Test
- Vaccine Response Antibody Test
Infusion
Medication therapy
Medications
Preventive
Respiratory
Tests
- Allergy Blood Testing
- Allergy Skin Prick Test
- Blood Component Allergy Test
- Complement Blood Test
- Eosinophil Blood Count
- Intradermal Allergy Test
- Pulmonary function test
- Skin Test For Metal Allergy
- Total IgE Blood Test
Treatment
Procedures Most Often Billed to Medicare
307 services · 95 patients · 4 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
217 | Less often than most peers in Allergy/Immunology |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
40 | More often than most peers in Allergy/Immunology |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
34 | Less often than most peers in Allergy/Immunology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
16 | Less often than most peers in Allergy/Immunology |
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 allergy/immunology specialists in Boston 8
Same specialty, same city.
Trained at Perelman School of Med at the University of Pennsylvania 4
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2005 at Perelman School of Med at the University of Pennsylvania 8
Providers who graduated from the same medical school in the same year.
Also performs Test for allergy using allergenic extract 8
Providers in MA who bill this service to Medicare most often.
Common questions
What is Patrick Brennan, M.D.'s specialty?
Patrick Brennan, M.D. is an allergy/immunology in Boston, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Patrick Brennan, M.D.?
Patrick Brennan, M.D. is listed at 75 Francis St, Boston, MA 02115. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Patrick Brennan, M.D.?
The number on file is (617) 732-9850. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Patrick Brennan, M.D.'s NPI number?
Patrick Brennan, M.D.'s National Provider Identifier is 1053458406. 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 Patrick Brennan, M.D.'s education?
Patrick Brennan, M.D. attended Perelman School of Med at the University of Pennsylvania, graduating in 2005. This comes from the CMS National Downloadable File.
CMS public data
How long has Patrick Brennan, M.D. been practicing?
Patrick Brennan, M.D. has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.
CMS public data
What is Patrick Brennan, M.D. known for?
According to Medicare billing data, Patrick Brennan, M.D. provides treatments such as test for allergy using allergenic extract, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Patrick Brennan, M.D. confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Patrick Brennan, M.D.. If this is you, claiming it is free.
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