Naina Mahngar, M.D.
NPI 1770994808 · Hematology & Oncology Physician · Granger, IN
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Naina Mahngar, M.D. is a Hematology & Oncology Physician provider in Granger, IN (NPI 1770994808).
Provider details
- NPI number
- 1770994808
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 01083645A (IN)
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 tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
3,354 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 728 | $90 |
| 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 | 599 | $15 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 470 | $90 |
| 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 | 463 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 54 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 242 | 72 |
| Prochlorperazine Maleate | 169 | 94 |
| Prednisone | 154 | 54 |
| Ondansetronbrand: Ondansetron Odt | 118 | 83 |
| Dexamethasone | 117 | 49 |
| Rivaroxabanbrand: Xarelto | 90 | 27 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 81 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (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 (3)
- 1740 W Taylor StreetChicago, IL 60612Phone: (866) 600-2273
- 5841 S Maryland AveChicago, IL 60637-1443Phone: (888) 824-0200
- 10855 Virginia StCrown Point, IN 46307-0210Phone: (888) 824-0200
Registry dates
- Enumerated
- 2014-05-12
- Last updated
- 2025-08-22
- Certified
- 2025-08-22
Frequently asked questions
- What is Naina Mahngar's NPI number?
- Naina Mahngar's National Provider Identifier (NPI) is 1770994808, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Naina Mahngar's specialty?
- Naina Mahngar is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Naina Mahngar located?
- Naina Mahngar's practice location on file with NPPES is 14260 Meridian Crossing, Granger, IN 46530-4284.
- What is Naina Mahngar's phone number?
- The practice phone number listed in the NPPES registry for Naina Mahngar is (574) 309-3600.
- Does Naina Mahngar accept Medicare?
- Naina Mahngar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Naina Mahngar's NPI active?
- Yes — Naina Mahngar's NPI (1770994808) is active in the NPPES registry as of the last update on 2025-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.