Grigoriy Krichmar, D.O.
NPI 1043371164ActiveIndividual· Internal Medicine· Massapequa, NY
Internal Medicine (D.O.) with Long Island Medical Services P.C., practicing in Massapequa, New York. Their prescriptions cost Medicare Part D more than their services did: $961,380 for 15,739 claims, against $321,848 paid for services in 2024. Otsuka Pharmaceutical Development & Commercialization, Inc. reported $15.96 in payments in 2025, mostly food and beverage. Lists North Shore University Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1043371164 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Dec 12, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 234331 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,338 |
|---|---|
| Services billed | 2,855 across 16 procedure codes |
| Paid by Medicare | $321,848 |
Part D prescriptions in 2024
| Prescriptions (claims) | 15,739 · 16,102 30-day fills |
|---|---|
| Patients | 399 |
| Total drug cost | $961,380 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Long Island Medical Services P.C.North Bellmore, NY · 6 clinicians
Hospital affiliations
- North Shore University HospitalManhasset, NY
- Ns/Lij Hs Huntington HospitalHuntington, NY
- Ns/Lij Hs Southside HospitalBay Shore, NY
- Plainview HospitalPlainview, NY
- St Catherine of Siena HospitalSmithtown, NY
Other facilities
- Constellation Home CareHome health agency · Syosset, NY
- Extended Home CareHome health agency · Brooklyn, NY
- Girling Health Care of New YorkHome health agency · Brooklyn, NY
- Gurwin Certified Home Health AgencyHome health agency · Commack, NY
- Good Shepherd HospiceHospice · Farmingdale, NY
- Hospice Care of Long Island, Queens, South ShoreHospice · Woodbury, NY
- Hospice of New York, LLCHospice · Long Island City, NY
- Affinity Skilled Living and Rehabilitation CenterNursing home · Oakdale, NY
- Belair Care Center IncNursing home · Bellmore, NY
- Gurwin Jewish Nursing and Rehabilitation CenterNursing home · Commack, NY
Industry payments (Open Payments)
- 2025$15.96 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka Pharmaceutical Development & Commercialization, Inc. | $15.96 | 1 |
What the 2025 payments were for
- Food and Beverage$15.96 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Massapequa
- 1013412782
- 1083794440
- 1184652356
- 1275562415
- 1346473394
- 1548299746
- 1609948884
- 1770506164
- 1871686691
- 1609937705
- 1275647166
- 1508813924
All 41 internal medicine physicians in Massapequa · All internal medicine physicians in New York