Physician Profile
Mary Mattheos, M.D. is a healthcare provider in Lindenhurst, NY specializing in internal medicine. Medicare claims data shows Mary provided 14,377 services to 2,759 patients. The services billed most often include test for allergy using allergenic extract, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and injection, methylprednisolone acetate, 1 mg. This provider record is associated with NPI 1609977719.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
350 W MONTAUK HWY
Lindenhurst, NY 11757
Within Internal 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.
Most searched conditions
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Most searched procedures
Preventive and evaluation
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
Digestive
Exams & Consultations
Heart & Circulation
Heart health
Imaging referral
Immunizations
Lab tests
Lungs & Breathing
Metabolic & Weight
Minor procedures
Office procedures
Office Procedures
Pain management
Preventive & Routine Care
Screenings & Diagnostics
Sexual health
14,377 services · 2,759 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Test for allergy using allergenic extract | Treatment | 95004 |
7,707 | More than most peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
262 | More than most peers in Internal Medicine |
| Test to measure expiratory airflow and volume | Treatment | 94010 |
211 | More than most peers in Internal Medicine |
| Test for hearing various pitches using earphone | Treatment | 92552 |
195 | More than most peers in Internal Medicine |
| Influenza vaccine, inactivated | Treatment | 90653 |
104 | More than most peers in Internal Medicine |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
48 | As often as other peers in Internal Medicine |
| Ultrasound study of arm and leg arteries | Treatment | 93922 |
32 | As often as other peers in Internal Medicine |
| Injection, methylprednisolone acetate, 1 mg | Drug given | J1010 |
669 | Less often than most peers in Internal Medicine |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
47 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
1,913 | More than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Mary Mattheos is an internist in Lindenhurst, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Mary Mattheos is listed at 350 W Montauk Hwy, Lindenhurst, NY 11757. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (631) 226-0388. Contact the office directly to confirm availability and scheduling.
NPI registry
Mary Mattheos's National Provider Identifier is 1609977719. 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
Mary Mattheos attended Other, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
Mary Mattheos has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Mary Mattheos provides treatments such as test for allergy using allergenic extract and routine electrocardiogram using at least 12 leads with interpretation and report, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Mary Mattheos. If this is you, claiming it is free.
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