2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1992858617 M.D.
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VIJAY KUMAR, M.D.

Endocrinology, Diabetes & Metabolism Physician in BLOOMINGTON, Illinois. 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
7K
Medicare Part D claims · 828 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

VIJAY KUMAR, M.D. filed 6,830 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in BLOOMINGTON, Illinois, prescribing 47% generic.

7K
Part D claims, 2023
47%
generic prescribing
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.

VIJAY KUMAR, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

6,830 Top 4% higher than 96% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 certification likely (heuristic — not verified)

VIJAY KUMAR, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 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 VIJAY KUMAR, M.D.?

Quality data not reported

NPI registry status

Active

Issued 01/18/2007

NPI 1992858617

Primary specialty

Endocrinology, Diabetes & Metabolism Physician

Mid-sized

7,852 US NPIs in this specialty

Medicare Part D claims

6,830 159% vs specialty avg

2023 prescription claims

Specialty avg: 2,639

Specialty distribution in Illinois

How Endocrinology, Diabetes & Metabolism Physician compares to other specialties among Illinois providers

Illinois providers

Endocrinology, Diabetes & Metabolism Physician share within Illinois

1. Endocrinology, Diabetes & Metabolism Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Endocrinology, Diabetes & Metabolism Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Endocrinology, Diabetes & Metabolism Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Endocrinology, Diabetes & Metabolism Physician ABMS/AOA estimate

Est. board-certified rate (Endocrinology, Diabetes & Metabolism Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Endocrinology, Diabetes & Metabolism 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).

VIJAY KUMAR, M.D. appears in the CMS NPPES registry as a Endocrinology, Diabetes & Metabolism Physician provider holding M.D. credentials at 1701 E COLLEGE AVE, BLOOMINGTON, IL, 61704, with a listed phone of (309) 664-3800. NPI 1992858617 was issued on 01/18/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KUMAR 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 6,830 prescription claims written by this provider, covering 828 Medicare beneficiaries and totaling roughly $4.0 million in drug spend, split 53% brand-name and 47% 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.

Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,852 enrolled providers across 54 states and an average of 2,639 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

1701 E COLLEGE AVE
BLOOMINGTON, IL 61704

Provider Details

NPI 1992858617
Specialty Endocrinology, Diabetes & Metabolism Physician
Credentials M.D.
Gender Male
NPI Issued 01/18/2007

Hospital and facility affiliations

Facilities where VIJAY KUMAR, M.D. 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.

OSF MULTI-SPECIALTY GROUP
BLOOMINGTON, IL

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

License & disciplinary context — Illinois IDFPR 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 — they are NOT specific to VIJAY KUMAR, M.D.. To verify VIJAY KUMAR, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases

IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Brand-heavy

VIJAY KUMAR, M.D. — brand share 53.0%
Specialty average (est.)

53% brand-name claims vs 47% generic, on 6,830 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.

6,830
Total Claims
$4.0M
Total Drug Cost
828
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
14,115
Total Day Supply
416,590
Brand vs Generic
53% brand / 47% generic
Brand Drug Cost
$3.8M
Generic Drug Cost
$65K

Patient Demographics

Average Patient Age
69.3 years
Avg HCC Risk Score
1.63
Gender Split
62% female / 38% male
Age Distribution
<65: 159, 65-74: 435, 75-84: 195, 85+: 39

Top Prescribed Drugs (Medicare Part D)

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

What VIJAY KUMAR, M.D. 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
Levothyroxine Sodium
821
Trulicity
Dulaglutide
649
Metformin Hcl
369
Jardiance
Empagliflozin
265
Ozempic
Semaglutide
243
Novolog Flexpen
Insulin Aspart
191
Methimazole
181
Humalog Kwikpen U-100
Insulin Lispro
156
Metformin Hcl Er
Metformin Hcl
153
Synthroid
Levothyroxine Sodium
145

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

Endocrinology, Diabetes & Metabolism Physician Overview

How VIJAY KUMAR, M.D. fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.

7,852
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider

VIJAY KUMAR, M.D.'s 6,830 claims are above the specialty average of 2,639.

Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Illinois

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

Compare Endocrinology, Diabetes & Metabolism Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is VIJAY KUMAR, M.D.'s specialty?
VIJAY KUMAR, M.D. specializes in Endocrinology, Diabetes & Metabolism Physician and practices in BLOOMINGTON, Illinois. Credentials: M.D..
How much does VIJAY KUMAR, M.D. prescribe under Medicare Part D?
In 2023, VIJAY KUMAR, M.D. wrote 6,830 Medicare Part D claims totaling $4.0M in drug costs for 828 beneficiaries.
Where is VIJAY KUMAR, M.D. located?
VIJAY KUMAR, M.D. is located at 1701 E COLLEGE AVE, BLOOMINGTON, IL, 61704. Phone: (309) 664-3800.
What is VIJAY KUMAR, M.D.'s NPI number?
VIJAY KUMAR, M.D.'s National Provider Identifier (NPI) is 1992858617, issued on 01/18/2007.
Does VIJAY KUMAR, M.D. prescribe more brand-name or generic drugs?
VIJAY KUMAR, M.D.'s prescribing is 53% brand-name and 47% generic drugs by claim count, with $3.8M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US?
There are 7,852 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does VIJAY KUMAR, M.D. prescribe most often?
Based on 2023 Medicare Part D data, VIJAY KUMAR, M.D.'s most frequently prescribed drugs include Levothyroxine Sodium, Trulicity, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does VIJAY KUMAR, M.D. accept Medicare?
VIJAY KUMAR, M.D. appears in CMS Medicare data with 6,830 Part D claims and 828 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify VIJAY KUMAR, M.D.'s credentials?
VIJAY KUMAR, M.D.'s NPI is 1992858617 with credentials M.D.. 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