Marilyn Jacobowitz, MD
NPI 1891741658 · Internal Medicine Physician · Mount Kisco, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marilyn Jacobowitz, MD is a Internal Medicine Physician provider in Mount Kisco, NY (NPI 1891741658).
Provider details
- NPI number
- 1891741658
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 182566 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,256 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 465 | $9 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 387 | $104 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 298 | $10 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 282 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 267 | $147 |
| Blood Test, Thyroid Stimulating Hormone (tsh)84443 | 213 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 623 | 172 |
| Rosuvastatin Calcium | 426 | 120 |
| Amlodipine Besylate | 293 | 82 |
| Zolpidem Tartrate | 200 | 44 |
| Losartan Potassium | 194 | 55 |
| Hydrochlorothiazide | 187 | 54 |
| Lisinopril |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-25
- Last updated
- 2019-11-21
Frequently asked questions
- What is Marilyn Jacobowitz's NPI number?
- Marilyn Jacobowitz's National Provider Identifier (NPI) is 1891741658, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn Jacobowitz's specialty?
- Marilyn Jacobowitz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marilyn Jacobowitz located?
- Marilyn Jacobowitz's practice location on file with NPPES is 90 S Bedford Rd, Mount Kisco, NY 10549-3412.
- What is Marilyn Jacobowitz's phone number?
- The practice phone number listed in the NPPES registry for Marilyn Jacobowitz is (914) 241-1050.
- Does Marilyn Jacobowitz accept Medicare?
- Marilyn Jacobowitz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marilyn Jacobowitz's NPI active?
- Yes — Marilyn Jacobowitz's NPI (1891741658) is active in the NPPES registry as of the last update on 2019-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.