2026 NPPES data Hematology & Oncology Physician NPI 1699803866 MD
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LALITHA NAYAK, MD

Hematology & Oncology Physician in INDIANAPOLIS, Indiana. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
59
Medicare Part D claims · 13 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
75%
generic claims · 25% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.4829/100
▼ 4 pts below national avg 83.1 · [object Object]
Industry payments
$425.72
18 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: LALITHA NAYAK, MD is a Hematology & Oncology Physician ([object Object]) practicing in INDIANAPOLIS, Indiana with a Medicare Part D prescribing footprint of 59 claims across 13 beneficiaries — 25% brand-name prescribing . Their CMS MIPS Final Score of 79.4829/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $425.72 across 18 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: LALITHA NAYAK, MD reported a CMS MIPS final score of 79.4829 out of 100, below the 83.1 national average, and filed 59 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

LALITHA NAYAK, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

LALITHA NAYAK, MD at a glance

Near national average

NPI registry status

Active

Issued 03/01/2007

NPI 1699803866

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

59 93% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

79.4829/100 3.6170999999999935% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Indiana

How Hematology & Oncology Physician compares to other specialties among Indiana providers

Indiana providers

Hematology & Oncology Physician share within Indiana

1. Hematology & Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology & Oncology Physician share within Indiana

Medicare quality performance — MIPS

LALITHA NAYAK, MD's 2023 MIPS final score plotted against the Hematology & Oncology Physician national average

Near national average
MIPS Final Score
79.4829/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 79.4829/100 vs national avg 83.1

0%100%National avg83%79.5%
MIPS final score (Hematology & Oncology Physician) — 79.4829/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

LALITHA NAYAK, MD is a Hematology & Oncology Physician provider practicing in INDIANAPOLIS, Indiana, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1699803866. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

LALITHA NAYAK, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 1030 W MICHIGAN ST FL 2, INDIANAPOLIS, IN, 46202, with a listed phone of (317) 944-0920. NPI 1699803866 was issued on 03/01/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NAYAK most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 59 prescription claims written by this provider, covering 13 Medicare beneficiaries and totaling roughly $119K in drug spend, split 25% brand-name and 75% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 79.4829/100 for the 2023 performance year (Quality 68.5144, Cost 63.0952), compared with the national average of 83.1.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

1030 W MICHIGAN ST FL 2
INDIANAPOLIS, IN 46202

Provider Details

NPI 1699803866
Specialty Hematology & Oncology Physician
Credentials MD
Gender Female
NPI Issued 03/01/2007

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

79.4829
Final Score
Avg: 83.1
68.5144
Quality
63.0952
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where LALITHA NAYAK, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

IU HEALTH MEDICAL GROUP LLC
INDIANAPOLIS, IN

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for LALITHA NAYAK, MD. Source: openpaymentsdata.cms.gov.

Total received

$426

Largest payer

Novartis Pharmaceuticals Corporation

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Above average

LALITHA NAYAK, MD — brand share 25.0%
Specialty average (est.)

25% brand-name claims vs 75% generic, on 59 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

59
Total Claims
$119K
Total Drug Cost
13
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
70
Total Day Supply
1,931
Brand vs Generic
25% brand / 75% generic
Brand Drug Cost
$18K
Generic Drug Cost
$101K

Patient Demographics

Average Patient Age
65.4 years
Avg HCC Risk Score
2.14

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Deferasirox
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hematology & Oncology Physician Overview

How LALITHA NAYAK, MD fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

LALITHA NAYAK, MD's 59 claims are below the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Indiana

Other clinicians with the same primary specialty enrolled in Indiana, drawn from the same CMS NPPES roster as NAYAK.

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is LALITHA NAYAK, MD's specialty?
LALITHA NAYAK, MD specializes in Hematology & Oncology Physician and practices in INDIANAPOLIS, Indiana. Credentials: MD.
How much does LALITHA NAYAK, MD prescribe under Medicare Part D?
In 2023, LALITHA NAYAK, MD wrote 59 Medicare Part D claims totaling $119K in drug costs for 13 beneficiaries.
What is LALITHA NAYAK, MD's Medicare quality score?
LALITHA NAYAK, MD has a CMS MIPS Final Score of 79.4829/100 (Quality: 68.5144, Cost: 63.0952). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is LALITHA NAYAK, MD located?
LALITHA NAYAK, MD is located at 1030 W MICHIGAN ST FL 2, INDIANAPOLIS, IN, 46202. Phone: (317) 944-0920.
What is LALITHA NAYAK, MD's NPI number?
LALITHA NAYAK, MD's National Provider Identifier (NPI) is 1699803866, issued on 03/01/2007.
Does LALITHA NAYAK, MD prescribe more brand-name or generic drugs?
LALITHA NAYAK, MD's prescribing is 25% brand-name and 75% generic drugs by claim count, with $18K in brand drug costs.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does LALITHA NAYAK, MD prescribe most often?
Based on 2023 Medicare Part D data, LALITHA NAYAK, MD's most frequently prescribed drugs include Deferasirox. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does LALITHA NAYAK, MD accept Medicare?
LALITHA NAYAK, MD appears in CMS Medicare data with 59 Part D claims and 13 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify LALITHA NAYAK, MD's credentials?
LALITHA NAYAK, MD's NPI is 1699803866 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology