2026 NPPES data Hematology & Oncology Physician NPI 1144220781 MD
Verify on CMS →

RAMALINGAM RATNASABAPATHY, MD

Hematology & Oncology Physician in HENDERSON, Nevada. 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
1K
Medicare Part D claims · 155 beneficiaries · Hematology & Oncology Physician avg: 847
MIPS score
93.4357/100
▲ 10 pts above national avg 83.1 · [object Object]
Industry payments
$7.9K
234 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

RAMALINGAM RATNASABAPATHY, MD reported a CMS MIPS final score of 93.4357/100 — above the 83.1 national average — and filed 1,153 Medicare Part D claims in 2023.

93.4357/100
MIPS score · +10 vs avg
1K
Part D claims, 2023
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

RAMALINGAM RATNASABAPATHY, MD's MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

93 Top 29% higher than 71% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

RAMALINGAM RATNASABAPATHY, 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).

What does the federal data show about RAMALINGAM RATNASABAPATHY, MD?

High performer (top quartile)

NPI registry status

Active

Issued 07/26/2005

NPI 1144220781

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

1,153 36% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

93.4357/100 10.335700000000003% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Nevada

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

Nevada providers

Hematology & Oncology Physician share within Nevada

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

Medicare quality performance — MIPS

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

High performer (top quartile)
MIPS Final Score
93.4357/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 93.4357/100 vs national avg 83.1

0%100%National avg83%93.4%
MIPS final score (Hematology & Oncology Physician) — 93.4357/100 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).

RAMALINGAM RATNASABAPATHY, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at 2460 W HORIZON RIDGE PKWY, HENDERSON, NV, 89052, with a listed phone of (702) 822-2000. NPI 1144220781 was issued on 07/26/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RATNASABAPATHY 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 1,153 prescription claims written by this provider, covering 155 Medicare beneficiaries and totaling roughly $1.9 million in drug spend, with an opioid prescribing rate of 8.6%. 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 93.4357/100 for the 2023 performance year (Quality 83.42), 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

2460 W HORIZON RIDGE PKWY
HENDERSON, NV 89052

Provider Details

NPI 1144220781
Specialty Hematology & Oncology Physician
Credentials MD
Gender Male
NPI Issued 07/26/2005

CMS Quality Score (MIPS)

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

93.4357
Final Score
Avg: 83.1
83.42
Quality
100
Promoting Interoperability

Reporting: Individual

Hospital and facility affiliations

Facilities where RAMALINGAM RATNASABAPATHY, 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.

ALLISON CURTIS KINGSLEY MEOZ MICHAEL AND SANCHEZ PC
HENDERSON, NV

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 RAMALINGAM RATNASABAPATHY, MD. Source: openpaymentsdata.cms.gov.

Total received

$7.9K

Largest payer

Genentech USA, Inc.

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.

Medicare Part D Prescribing Data

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

1,153
Total Claims
$1.9M
Total Drug Cost
155
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,677
Total Day Supply
45,832
Generic Drug Cost
$189K
Opioid Claims
99 (8.6% rate)
Antibiotic Claims
61

Patient Demographics

Average Patient Age
71.4 years
Avg HCC Risk Score
1.99
Gender Split
54% female / 46% male

Top Prescribed Drugs (Medicare Part D)

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

What RAMALINGAM RATNASABAPATHY, MD prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Eliquis
Apixaban
73
Prednisone
70
Gabapentin
44
Ondansetron Hcl
44
Letrozole
36
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
35
Xarelto
Rivaroxaban
34
Atorvastatin Calcium
31
Alendronate Sodium
29
Zolpidem Tartrate
27

* 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 RAMALINGAM RATNASABAPATHY, 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

RAMALINGAM RATNASABAPATHY, MD's 1,153 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Nevada

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

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

Frequently Asked Questions

What is RAMALINGAM RATNASABAPATHY, MD's specialty?
RAMALINGAM RATNASABAPATHY, MD specializes in Hematology & Oncology Physician and practices in HENDERSON, Nevada. Credentials: MD.
How much does RAMALINGAM RATNASABAPATHY, MD prescribe under Medicare Part D?
In 2023, RAMALINGAM RATNASABAPATHY, MD wrote 1,153 Medicare Part D claims totaling $1.9M in drug costs for 155 beneficiaries.
What is RAMALINGAM RATNASABAPATHY, MD's Medicare quality score?
RAMALINGAM RATNASABAPATHY, MD has a CMS MIPS Final Score of 93.4357/100 (Quality: 83.42). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is RAMALINGAM RATNASABAPATHY, MD located?
RAMALINGAM RATNASABAPATHY, MD is located at 2460 W HORIZON RIDGE PKWY, HENDERSON, NV, 89052. Phone: (702) 822-2000.
What is RAMALINGAM RATNASABAPATHY, MD's NPI number?
RAMALINGAM RATNASABAPATHY, MD's National Provider Identifier (NPI) is 1144220781, issued on 07/26/2005.
Does RAMALINGAM RATNASABAPATHY, MD prescribe opioids?
Yes, RAMALINGAM RATNASABAPATHY, MD had 99 opioid claims in 2023 with an opioid prescribing rate of 8.6%.
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 RAMALINGAM RATNASABAPATHY, MD prescribe most often?
Based on 2023 Medicare Part D data, RAMALINGAM RATNASABAPATHY, MD's most frequently prescribed drugs include Eliquis, Prednisone, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RAMALINGAM RATNASABAPATHY, MD accept Medicare?
RAMALINGAM RATNASABAPATHY, MD appears in CMS Medicare data with 1,153 Part D claims and 155 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RAMALINGAM RATNASABAPATHY, MD's credentials?
RAMALINGAM RATNASABAPATHY, MD's NPI is 1144220781 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