2026 NPPES data Internal Medicine Physician NPI 1982603924 M.D.
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BRUCE BLACKER, M.D.

Internal Medicine Physician in CHICAGO, 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 · 424 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.6K
72 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

BRUCE BLACKER, M.D. filed 6,678 Medicare Part D claims in 2023 as a Internal Medicine Physician in CHICAGO, Illinois, prescribing 87% generic.

7K
Part D claims, 2023
87%
generic prescribing
$1.6K
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.

BRUCE BLACKER, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

6,678 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-eligible specialty (heuristic — not verified)

BRUCE BLACKER, M.D. 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 BRUCE BLACKER, M.D.?

Quality data not reported

NPI registry status

Active

Issued 07/20/2005

NPI 1982603924

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

6,678 146% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Illinois

How Internal Medicine Physician compares to other specialties among Illinois providers

Illinois providers

Internal Medicine Physician share within Illinois

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

Specialty board-certification context

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

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

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

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

BRUCE BLACKER, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 2800 N SHERIDAN RD, CHICAGO, IL, 60657, with a listed phone of (773) 472-5803. NPI 1982603924 was issued on 07/20/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BLACKER 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 6,678 prescription claims written by this provider, covering 424 Medicare beneficiaries and totaling roughly $782K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 7.4%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

2800 N SHERIDAN RD
CHICAGO, IL 60657

Provider Details

NPI 1982603924
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 07/20/2005

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 BRUCE BLACKER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.6K

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.

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 BRUCE BLACKER, M.D.. To verify BRUCE BLACKER, 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 · Typical

BRUCE BLACKER, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 6,678 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.

6,678
Total Claims
$782K
Total Drug Cost
424
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
11,549
Total Day Supply
316,808
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$636K
Generic Drug Cost
$137K
Opioid Claims
495 (7.4% rate)
Antibiotic Claims
140

Patient Demographics

Average Patient Age
75.8 years
Avg HCC Risk Score
1.71
Gender Split
55% female / 45% male
Age Distribution
<65: 52, 65-74: 126, 75-84: 157, 85+: 89

Top Prescribed Drugs (Medicare Part D)

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

What BRUCE BLACKER, 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
Atorvastatin Calcium
351
Amlodipine Besylate
305
Lisinopril
189
Metformin Hcl
161
Levothyroxine Sodium
155
Gabapentin
150
Losartan Potassium
150
Furosemide
144
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
136
Eliquis
Apixaban
129

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

Internal Medicine Physician Overview

How BRUCE BLACKER, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

BRUCE BLACKER, M.D.'s 6,678 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Illinois

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BRUCE BLACKER, M.D.'s specialty?
BRUCE BLACKER, M.D. specializes in Internal Medicine Physician and practices in CHICAGO, Illinois. Credentials: M.D..
How much does BRUCE BLACKER, M.D. prescribe under Medicare Part D?
In 2023, BRUCE BLACKER, M.D. wrote 6,678 Medicare Part D claims totaling $782K in drug costs for 424 beneficiaries.
Where is BRUCE BLACKER, M.D. located?
BRUCE BLACKER, M.D. is located at 2800 N SHERIDAN RD, CHICAGO, IL, 60657. Phone: (773) 472-5803.
What is BRUCE BLACKER, M.D.'s NPI number?
BRUCE BLACKER, M.D.'s National Provider Identifier (NPI) is 1982603924, issued on 07/20/2005.
Does BRUCE BLACKER, M.D. prescribe more brand-name or generic drugs?
BRUCE BLACKER, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $636K in brand drug costs.
Does BRUCE BLACKER, M.D. prescribe opioids?
Yes, BRUCE BLACKER, M.D. had 495 opioid claims in 2023 with an opioid prescribing rate of 7.4%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does BRUCE BLACKER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, BRUCE BLACKER, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BRUCE BLACKER, M.D. accept Medicare?
BRUCE BLACKER, M.D. appears in CMS Medicare data with 6,678 Part D claims and 424 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRUCE BLACKER, M.D.'s credentials?
BRUCE BLACKER, M.D.'s NPI is 1982603924 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