2026 NPPES data Hematology & Oncology Physician NPI 1356457964 MD
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RUBY KOCHHAR, MD

Hematology & Oncology Physician in HAMPTON, Virginia. 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
25
Medicare Part D claims · Hematology & Oncology Physician avg: 847
Industry payments
$5.3K
3 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

RUBY KOCHHAR, MD filed 25 Medicare Part D claims in 2023 as a Hematology & Oncology Physician in HAMPTON, Virginia.

25
Part D claims, 2023
$5.3K
industry payments (Sunshine Act)

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.

RUBY KOCHHAR, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

25 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board-eligible specialty (heuristic — not verified)

RUBY KOCHHAR, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about RUBY KOCHHAR, MD?

Quality data not reported

NPI registry status

Active

Issued 08/23/2006

NPI 1356457964

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

25 97% vs specialty avg

2023 prescription claims

Specialty avg: 847

Specialty distribution in Virginia

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

Virginia providers

Hematology & Oncology Physician share within Virginia

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

Specialty board-certification context

Estimated specialty board-certified rate — Hematology & Oncology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Hematology & Oncology Physician ABMS/AOA estimate

Est. board-certified rate (Hematology & Oncology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Hematology & Oncology Physician) — ABMS / AOA estimate

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).

RUBY KOCHHAR, MD is a Hematology & Oncology Physician provider practicing in HAMPTON, Virginia, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1356457964. 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.

RUBY KOCHHAR, MD appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding MD credentials at VA MED CTR, HAMPTON, VA, 23667, with a listed phone of (757) 722-9961. NPI 1356457964 was issued on 08/23/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KOCHHAR 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 25 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $546 in drug spend. 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.

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

VA MED CTR
HAMPTON, VA 23667

Provider Details

NPI 1356457964
Specialty Hematology & Oncology Physician
Credentials MD
Gender Female
NPI Issued 08/23/2006

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 RUBY KOCHHAR, MD. Source: openpaymentsdata.cms.gov.

Total received

$5.3K

Largest payer

Astellas Pharma US 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.

25
Total Claims
$546
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
44
Total Day Supply
1,162
Brand Drug Cost
$0
Generic Drug Cost
$546

Patient Demographics

Average Patient Age
87.0 years
Avg HCC Risk Score
3.35

Hematology & Oncology Physician Overview

How RUBY KOCHHAR, 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

RUBY KOCHHAR, MD's 25 claims are below the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Virginia

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

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

Frequently Asked Questions

What is RUBY KOCHHAR, MD's specialty?
RUBY KOCHHAR, MD specializes in Hematology & Oncology Physician and practices in HAMPTON, Virginia. Credentials: MD.
How much does RUBY KOCHHAR, MD prescribe under Medicare Part D?
In 2023, RUBY KOCHHAR, MD wrote 25 Medicare Part D claims totaling $546 in drug costs for N/A beneficiaries.
Where is RUBY KOCHHAR, MD located?
RUBY KOCHHAR, MD is located at VA MED CTR, HAMPTON, VA, 23667. Phone: (757) 722-9961.
What is RUBY KOCHHAR, MD's NPI number?
RUBY KOCHHAR, MD's National Provider Identifier (NPI) is 1356457964, issued on 08/23/2006.
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.
Does RUBY KOCHHAR, MD accept Medicare?
RUBY KOCHHAR, MD appears in CMS Medicare data with 25 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RUBY KOCHHAR, MD's credentials?
RUBY KOCHHAR, MD's NPI is 1356457964 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.
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