2026 NPPES data Internal Medicine Physician NPI 1972556264 MD
Verify on CMS →

HOWARD EINHORN, MD

Internal Medicine Physician in MELROSE PARK, 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
6K
Medicare Part D claims · 380 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

HOWARD EINHORN, MD filed 6,425 Medicare Part D claims in 2023 as a Internal Medicine Physician in MELROSE PARK, Illinois, prescribing 88% generic.

6K
Part D claims, 2023
88%
generic prescribing

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.

HOWARD EINHORN, MD's Medicare Part D volume vs every U.S. prescriber

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

6,425 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)

HOWARD EINHORN, 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 HOWARD EINHORN, MD?

Quality data not reported

NPI registry status

Active

Issued 05/18/2006

NPI 1972556264

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

6,425 137% 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).

HOWARD EINHORN, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 675 W NORTH AVE, MELROSE PARK, IL, 60160, with a listed phone of (708) 450-5745. NPI 1972556264 was issued on 05/18/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what EINHORN 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 6,425 prescription claims written by this provider, covering 380 Medicare beneficiaries and totaling roughly $672K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 5.4%. 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

675 W NORTH AVE
MELROSE PARK, IL 60160

Provider Details

NPI 1972556264
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 05/18/2006

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 HOWARD EINHORN, MD. To verify HOWARD EINHORN, 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

HOWARD EINHORN, MD — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 6,425 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.

6,425
Total Claims
$672K
Total Drug Cost
380
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
14,237
Total Day Supply
409,867
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$569K
Generic Drug Cost
$96K
Opioid Claims
348 (5.4% rate)
Antibiotic Claims
213

Patient Demographics

Average Patient Age
76.1 years
Avg HCC Risk Score
1.42
Gender Split
54% female / 46% male
Age Distribution
<65: 23, 65-74: 135, 75-84: 161, 85+: 61

Top Prescribed Drugs (Medicare Part D)

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

What HOWARD EINHORN, 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
Atorvastatin Calcium
452
Metoprolol Tartrate
407
Amlodipine Besylate
211
Levothyroxine Sodium
174
Metformin Hcl
173
Hydrochlorothiazide
168
Potassium Chloride
164
Tamsulosin Hcl
155
Lisinopril
154
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
144

* 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 HOWARD EINHORN, MD 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

HOWARD EINHORN, MD's 6,425 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 EINHORN.

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

Frequently Asked Questions

What is HOWARD EINHORN, MD's specialty?
HOWARD EINHORN, MD specializes in Internal Medicine Physician and practices in MELROSE PARK, Illinois. Credentials: MD.
How much does HOWARD EINHORN, MD prescribe under Medicare Part D?
In 2023, HOWARD EINHORN, MD wrote 6,425 Medicare Part D claims totaling $672K in drug costs for 380 beneficiaries.
Where is HOWARD EINHORN, MD located?
HOWARD EINHORN, MD is located at 675 W NORTH AVE, MELROSE PARK, IL, 60160. Phone: (708) 450-5745.
What is HOWARD EINHORN, MD's NPI number?
HOWARD EINHORN, MD's National Provider Identifier (NPI) is 1972556264, issued on 05/18/2006.
Does HOWARD EINHORN, MD prescribe more brand-name or generic drugs?
HOWARD EINHORN, MD's prescribing is 12% brand-name and 88% generic drugs by claim count, with $569K in brand drug costs.
Does HOWARD EINHORN, MD prescribe opioids?
Yes, HOWARD EINHORN, MD had 348 opioid claims in 2023 with an opioid prescribing rate of 5.4%.
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 HOWARD EINHORN, MD prescribe most often?
Based on 2023 Medicare Part D data, HOWARD EINHORN, MD's most frequently prescribed drugs include Atorvastatin Calcium, Metoprolol Tartrate, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HOWARD EINHORN, MD accept Medicare?
HOWARD EINHORN, MD appears in CMS Medicare data with 6,425 Part D claims and 380 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HOWARD EINHORN, MD's credentials?
HOWARD EINHORN, MD's NPI is 1972556264 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