At a glance
- 851 Main St, Suite 21, South Weymouth, MA 02190
About Dr. Vallen Mashikian
Based in South Weymouth, MA, Margaret A. Vallen Mashikian, M.D. is listed in the NPI registry under allergy/immunology. Margaret graduated from Drexel University College of Medicine in 1986. Margaret is also listed as specializing in allergy. According to Medicare claims data, Margaret cared for 457 Medicare patients across 3,682 services. The services billed most often include test for allergy using allergenic extract, professional service for preparation and provision of 1 or more antigens, and test for allergy using allergenic extract injected into skin. NPI 1881751394 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
- (781) 331-1060
- Email not available
Practice Locations
851 MAIN ST SUITE 21
South Weymouth, MA 02190
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
- Asthma
- Eczema
- Food allergies
- Hives
- Seasonal allergies
Allergies
- Angioedema
- Cockroach Allergy
- Histamine Intolerance
- Oral Allergy Syndrome
- Red Meat Allergy
Digestive
Drug allergies
- Sulfa Drug Allergy
Drug allergy
- Aspirin Allergy
- Drug Allergies
- Penicillin Allergy
- Vaccine Allergy
Emergency
- Severe Allergic Shock
Environmental
- Dust Mite Allergy
- Insect Sting Allergy
- Latex Allergy
- Mold Allergy
- Pet Allergies
Eye
- Eye Allergies
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
- Allergic Asthma
- Wheezing
Respiratory
- Chronic cough
Sinus
- Chronic sinusitis
- Loss or reduction of smell
- Nasal polyps
- Nonallergic rhinitis
- Post-Nasal Drip
Sinus conditions
- Sinus Headaches
Skin
- Cold Allergy
- Contact dermatitis
- Nickel Allergy
- Sun Allergy
Skin conditions
- Chronic itching
- Poison Ivy Rash
- Skin Writing Rash
Procedures & services
Most searched procedures
- Allergy testing
- Immunotherapy
- Patch testing
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
- C1 Esterase Inhibitor Infusion
- IVIG Infusion
- Subcutaneous Immunoglobulin Infusion
Medication therapy
- Fasenra Injections
- Nucala Injections
- Tezspire Injections
Medications
- Dupixent Injections
- Targeted therapy
- Xolair Injections
Preventive
- Anaphylaxis Emergency Action Plan
- Epinephrine Autoinjector Training
Respiratory
- Inhaler technique instruction
- Nebulizer Breathing Treatment
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
- Aspirin Desensitization
- Dietary Allergen Elimination Plan
- Drug Desensitization Protocol
- Sinus Rinse Training
Procedures Most Often Billed to Medicare
3,682 services · 457 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
1,817 | As often as other peers in Allergy/Immunology |
| Professional service for preparation and provision of 1 or more antigens | Treatment | 95165 |
699 | As often as other peers in Allergy/Immunology |
| Test for allergy using allergenic extract injected into skin | Treatment | 95024 |
400 | As often as other peers in Allergy/Immunology |
| Professional service for multiple injections of allergen | Treatment | 95117 |
387 | As often as other peers in Allergy/Immunology |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
73 | More 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 |
192 | More often than most peers in Allergy/Immunology |
| New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more | Office visit | 99203 |
54 | More 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 |
23 | As often as other 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 |
22 | Less often than most peers in Allergy/Immunology |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
15 | 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.
Other allergy/immunology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
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 Drexel University College of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 13 related providers in 2 groups
Class of 1986 at Drexel University College of Medicine 5
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 kind of doctor is Margaret A. Vallen Mashikian?
Margaret A. Vallen Mashikian is an allergy/immunology in South Weymouth, MA. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is Margaret A. Vallen Mashikian's address?
Margaret A. Vallen Mashikian is listed at 851 Main St Suite 21, South Weymouth, MA 02190. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Margaret A. Vallen Mashikian?
The number on file is (781) 331-1060. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Margaret A. Vallen Mashikian's NPI number?
Margaret A. Vallen Mashikian's National Provider Identifier is 1881751394. 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 Margaret A. Vallen Mashikian train?
Margaret A. Vallen Mashikian attended Drexel University College of Medicine, graduating in 1986. This comes from the CMS National Downloadable File.
CMS public data
How long has Margaret A. Vallen Mashikian been practicing?
Margaret A. Vallen Mashikian has 40 years experience. Calculated from a graduation year of 1986, reported in the CMS National Downloadable File.
CMS public data
What procedures does Margaret A. Vallen Mashikian perform?
According to Medicare billing data, Margaret A. Vallen Mashikian provides treatments such as test for allergy using allergenic extract and professional service for preparation and provision of 1 or more antigens, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Margaret A. Vallen Mashikian confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Margaret A. Vallen Mashikian. If this is you, claiming it is free.
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