Marzena Gieniusz, M.D.
NPI 1366886640 · Geriatric Medicine (Internal Medicine) Physician · Great Neck, NY
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marzena Gieniusz, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Great Neck, NY (NPI 1366886640).
Provider details
- NPI number
- 1366886640
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 285221 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,065 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 238 | $147 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 231 | $19 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 114 | $206 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 93 | $256 |
| Assessment of and Care Planning for Patient With Impaired Thought Processing, Typically 60 Minutes99483 | 68 | $316 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 167 | 49 |
| Amlodipine Besylate | 117 | 32 |
| Levothyroxine Sodium | 100 | 31 |
| Escitalopram Oxalate | 68 | 29 |
| Gabapentin | 68 | 19 |
| Losartan Potassium | 59 | 24 |
| Quetiapine Fumarate |
Practice location
Mailing address
Additional practice locations (1)
- 150 55th StLutheran Medical CenterBrooklyn, NY 11220-2508Phone: (718) 630-7000
Registry dates
- Enumerated
- 2013-04-17
- Last updated
- 2018-05-14
Frequently asked questions
- What is Marzena Gieniusz's NPI number?
- Marzena Gieniusz's National Provider Identifier (NPI) is 1366886640, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marzena Gieniusz's specialty?
- Marzena Gieniusz is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Marzena Gieniusz located?
- Marzena Gieniusz's practice location on file with NPPES is 865 Northern Blvd Ste 201, Great Neck, NY 11021-5310.
- What is Marzena Gieniusz's phone number?
- The practice phone number listed in the NPPES registry for Marzena Gieniusz is (516) 708-2520.
- Does Marzena Gieniusz accept Medicare?
- Marzena Gieniusz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marzena Gieniusz's NPI active?
- Yes — Marzena Gieniusz's NPI (1366886640) is active in the NPPES registry as of the last update on 2018-05-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.