Physician Profile
Based in New York, NY, Larisa Mashensky, MD is listed in the NPI registry under internal medicine. Medicare claims data shows Larisa provided 8,641 services to 2,880 patients. The services billed most often include injection, iron sucrose, 1 mg, established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more, and test for allergy using allergenic extract. NPI 1134181373 identifies this record in the national registry.
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.
50 E 42ND ST SUITE#200
New York, NY 10017
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.
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8,641 services · 2,880 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
370 | More often than most peers in Internal Medicine |
| Test for allergy using allergenic extract | Treatment | 95004 |
650 | Less often than most peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
336 | More than most peers in Internal Medicine |
| Infusion into a vein for therapy, prevention, or diagnosis, each additional hour | Treatment | 96366 |
81 | As often as other peers in Internal Medicine |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | Treatment | 96365 |
81 | As often as other peers in Internal Medicine |
| Injection, iron sucrose, 1 mg | Drug given | J1756 |
1,953 | Less often than most peers in Internal Medicine |
| Infusion, normal saline solution, 250 cc | Drug given | J7050 |
53 | As often as other 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 |
1,384 | More than most peers in Internal Medicine |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
415 | More often than most peers in Internal Medicine |
| Thyroid hormone, t3 measurement, total | Lab test | 84480 |
413 | More often than most peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Mashensky is an internist in New York, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Dr. Mashensky is listed at 50 E 42Nd St Suite#200, New York, NY 10017. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (212) 867-0405. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Mashensky's National Provider Identifier is 1134181373. 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
Dr. Mashensky attended Other, graduating in 1995. This comes from the CMS National Downloadable File.
CMS public data
Dr. Mashensky has 31 years experience. Calculated from a graduation year of 1995, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Mashensky performs procedures including insertion of needle into vein for collection of blood sample; 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 Dr. Mashensky. If this is you, claiming it is free.
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