Naina Mahngar, M.D.
Hematology & Oncology Physician · Granger, IN
Naina Mahngar, M.D. is a hematology & oncology physician with a practice address in Granger, Indiana, and NPI 1770994808, issued on May 12, 2014. Check the license (Indiana 01083645A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Naina Mahngar
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- 01083645A IN
036143648 IL
Self-reported in NPPES; status is on the state search - Practice location
- 14260 Meridian Crossing, Granger, IN 46530
- Phone
- (574) 309-3600
- Enumerated
- May 12, 2014
- Record last updated
- Aug 22, 2025
- Medicare enrollment
- Enrolled (PECOS I20200724001924); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 245 in Indiana → Look up another NPI →
Verify Naina Mahngar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 01083645ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,474 Medicare Part D claims for 353 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 185 claims were for opioids.
Most prescribed
- Anastrozole242 claims
- Prochlorperazine Maleate169 claims
- Prednisone154 claims
- Ondansetron Odt118 claims
- Dexamethasone117 claims
- Xarelto90 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $17.38
1 payment: food and beverage; the largest payer was Tempus AI, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Rci (wrs) LLCPortage, IN
- University OF ChicagoCrown Point, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Naina Mahngar among 245 hematology & oncology physician records in Indiana
Naina Mahngar, M.D. is one of 245 hematology & oncology physician records with a practice address in Indiana. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 82% of them.
- NPI issued2014 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2014 · median 2001 among the 177 with a school on file
- Record last updated2025 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Indiana
There are 245 hematology & oncology physician records in Indiana.
All 245 in Indiana → Every provider in Granger → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Anita Conte, MDGoshen, IN 465261295706646
- Kennedy Iheanacho, MDGoshen, IN 465261174056329
- Ebenezer Kio, MDGoshen, IN 465261164509535
- Katarina Leckova, MDGoshen, IN 465261699734251
- Joseph Spahr, M.D.Goshen, IN 465261659432235
- Shamila Garg, MDMishawaka, IN 465451184663742
- Ahsanul Haque, M.D.Elkhart, IN 465141558364372
- Omer Toor, MDElkhart, IN 465141477868180
Common questions
What is Naina Mahngar, M.D.'s NPI number?
Naina Mahngar, M.D.'s National Provider Identifier (NPI) is 1770994808, issued on May 12, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Naina Mahngar, M.D. located?
The NPPES record lists a practice address at 14260 Meridian Crossing, Granger, IN, 46530. Phone: (574) 309-3600. Providers update this record themselves, so call before visiting.
How can I verify Naina Mahngar, M.D.'s license?
NPPES lists Indiana license number 01083645A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Naina Mahngar, M.D. prescribe under Medicare Part D?
In 2024, Naina Mahngar, M.D. had 2,474 Medicare Part D claims for 353 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.