Maria Isabel Villegas Kastner, M.D.
NPI 1154859429 · Nephrology Physician · Baltimore, MD
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Isabel Villegas Kastner, M.D. is a Nephrology Physician provider in Baltimore, MD (NPI 1154859429).
Provider details
- NPI number
- 1154859429
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
631 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) |
|---|---|---|
| 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 | 149 | $15 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 113 | $9 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 109 | $330 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 79 | $118 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 63 | $164 |
| Home Dialysis Services Per Month (20 Years Or Older) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 26 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 124 | 43 |
| Amlodipine Besylate | 78 | 33 |
| Allopurinol | 75 | 22 |
| Lisinopril | 68 | 22 |
| Losartan Potassium | 64 | 17 |
| Carvedilol | 62 | 21 |
| Calcitriol | 48 | 18 |
| Nifedipinebrand: Nifedipine Er |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$394 across 11 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
Additional practice locations (1)
- 4422 3rd AveBronx, NY 10457-2545Phone: (718) 960-9000
Registry dates
- Enumerated
- 2017-05-31
- Last updated
- 2022-11-16
- Certified
- 2022-10-25
Frequently asked questions
- What is Maria Isabel Villegas Kastner's NPI number?
- Maria Isabel Villegas Kastner's National Provider Identifier (NPI) is 1154859429, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Isabel Villegas Kastner's specialty?
- Maria Isabel Villegas Kastner is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Isabel Villegas Kastner located?
- Maria Isabel Villegas Kastner's practice location on file with NPPES is 1830 E Monument St Ste 416, Baltimore, MD 21287-0020.
- What is Maria Isabel Villegas Kastner's phone number?
- The practice phone number listed in the NPPES registry for Maria Isabel Villegas Kastner is (410) 502-7070.
- Does Maria Isabel Villegas Kastner accept Medicare?
- Maria Isabel Villegas Kastner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Isabel Villegas Kastner's NPI active?
- Yes — Maria Isabel Villegas Kastner's NPI (1154859429) is active in the NPPES registry as of the last update on 2022-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.