2026 NPPES data Nephrology Physician NPI 1487652186 MD
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RAJU RAY, MD

Nephrology Physician in ELK GROVE VILLAGE, 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
1K
Medicare Part D claims · 216 beneficiaries · Nephrology Physician avg: 1K
Generic prescribing
85%
generic claims · 15% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$948.99
38 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

RAJU RAY, MD filed 1,312 Medicare Part D claims in 2023 as a Nephrology Physician in ELK GROVE VILLAGE, Illinois, prescribing 85% generic.

1K
Part D claims, 2023
85%
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.

RAJU RAY, MD's Medicare Part D volume vs every U.S. prescriber

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

1,312 Top 21% higher than 79% 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%). This entry sits in this band. 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 certification likely (heuristic — not verified)

RAJU RAY, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 RAJU RAY, MD?

Quality data not reported

NPI registry status

Active

Issued 07/07/2005

NPI 1487652186

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

1,312 10% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

Specialty distribution in Illinois

How Nephrology Physician compares to other specialties among Illinois providers

Illinois providers

Nephrology Physician share within Illinois

1. Nephrology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nephrology Physician share within Illinois

Specialty board-certification context

Estimated specialty board-certified rate — Nephrology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Nephrology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nephrology 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).

RAJU RAY, MD is a Nephrology Physician provider practicing in ELK GROVE VILLAGE, Illinois, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1487652186. 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.

RAJU RAY, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 901 BIESTERFIELD RD, ELK GROVE VILLAGE, IL, 60007, with a listed phone of (847) 952-9332. NPI 1487652186 was issued on 07/07/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what RAY 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 1,312 prescription claims written by this provider, covering 216 Medicare beneficiaries and totaling roughly $198K in drug spend, split 15% brand-name and 85% 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.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

901 BIESTERFIELD RD
ELK GROVE VILLAGE, IL 60007

Provider Details

NPI 1487652186
Specialty Nephrology Physician
Credentials MD
Gender Male
NPI Issued 07/07/2005

Hospital and facility affiliations

Facilities where RAJU RAY, 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.

NANI ELK GROVE
ELK GROVE VILLAGE, IL
NEPHROLOGY ASSOCIATES OF NORTHERN ILLINOIS LTD
HOFFMAN ESTATES, 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).

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 RAJU RAY, MD. Source: openpaymentsdata.cms.gov.

Total received

$949

Largest payer

Amgen 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.

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 RAJU RAY, MD. To verify RAJU RAY, MD'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 · Typical

RAJU RAY, MD — brand share 15.0%
Specialty average (est.)

15% brand-name claims vs 85% generic, on 1,312 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.

1,312
Total Claims
$198K
Total Drug Cost
216
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,652
Total Day Supply
78,663
Brand vs Generic
15% brand / 85% generic
Brand Drug Cost
$151K
Generic Drug Cost
$47K
Antibiotic Claims
13

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
3.49
Gender Split
41% female / 59% male
Age Distribution
<65: 32, 65-74: 61, 75-84: 100, 85+: 23

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Losartan Potassium
192
Amlodipine Besylate
109
Farxiga
Dapagliflozin Propanediol
97
Calcitriol
87
Chlorthalidone
77
Sevelamer Carbonate
75
Furosemide
65
Lisinopril
65
Hydralazine Hcl
62
Metoprolol Succinate
55

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

Nephrology Physician Overview

How RAJU RAY, MD fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

RAJU RAY, MD's 1,312 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in Illinois

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

Compare Nephrology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RAJU RAY, MD's specialty?
RAJU RAY, MD specializes in Nephrology Physician and practices in ELK GROVE VILLAGE, Illinois. Credentials: MD.
How much does RAJU RAY, MD prescribe under Medicare Part D?
In 2023, RAJU RAY, MD wrote 1,312 Medicare Part D claims totaling $198K in drug costs for 216 beneficiaries.
Where is RAJU RAY, MD located?
RAJU RAY, MD is located at 901 BIESTERFIELD RD, ELK GROVE VILLAGE, IL, 60007. Phone: (847) 952-9332.
What is RAJU RAY, MD's NPI number?
RAJU RAY, MD's National Provider Identifier (NPI) is 1487652186, issued on 07/07/2005.
Does RAJU RAY, MD prescribe more brand-name or generic drugs?
RAJU RAY, MD's prescribing is 15% brand-name and 85% generic drugs by claim count, with $151K in brand drug costs.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does RAJU RAY, MD prescribe most often?
Based on 2023 Medicare Part D data, RAJU RAY, MD's most frequently prescribed drugs include Losartan Potassium, Amlodipine Besylate, Farxiga. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RAJU RAY, MD accept Medicare?
RAJU RAY, MD appears in CMS Medicare data with 1,312 Part D claims and 216 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify RAJU RAY, MD's credentials?
RAJU RAY, MD's NPI is 1487652186 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