Larisa Mashensky, MD
NPI 1134181373 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Larisa Mashensky, MD is a Internal Medicine Physician provider in New York, NY (NPI 1134181373).
Provider details
- NPI number
- 1134181373
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 223084 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,838 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,384 | $96 |
| Test for Allergy Using Allergenic Extract95004 | 650 | $4 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 415 | $16 |
| Thyroxine (thyroid Chemical), Free84439 | 413 | $9 |
| Thyroid Hormone, T3 Measurement, Total84480 | 413 | $14 |
| Cyanocobalamin (vitamin B-12) Level82607 | 401 | $15 |
| Ferritin (blood Protein) Level |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 247 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 1,144 | 176 |
| Famotidine | 616 | 104 |
| Amlodipine Besylate | 501 | 79 |
| Metoprolol Succinate | 478 | 80 |
| Icosapent Ethylbrand: Vascepa | 453 | 64 |
| Levothyroxine Sodium | 419 | 57 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,581 across 70 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-04
- Last updated
- 2008-08-20
Frequently asked questions
- What is Larisa Mashensky's NPI number?
- Larisa Mashensky's National Provider Identifier (NPI) is 1134181373, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Larisa Mashensky's specialty?
- Larisa Mashensky is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Larisa Mashensky located?
- Larisa Mashensky's practice location on file with NPPES is 50 E 42nd St, New York, NY 10017-5405.
- What is Larisa Mashensky's phone number?
- The practice phone number listed in the NPPES registry for Larisa Mashensky is (212) 867-0405.
- Does Larisa Mashensky accept Medicare?
- Larisa Mashensky is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Larisa Mashensky's NPI active?
- Yes — Larisa Mashensky's NPI (1134181373) is active in the NPPES registry as of the last update on 2008-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.