2026 NPPES data Clinical Cardiac Electrophysiology Physician NPI 1639570849 M.D.
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KARIM NATHAN, M.D.

Clinical Cardiac Electrophysiology Physician in LANGHORNE, Pennsylvania. 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
510
Medicare Part D claims · 134 beneficiaries · Clinical Cardiac Electrophysiology Physician avg: 2K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$417.39
17 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

KARIM NATHAN, M.D. filed 510 Medicare Part D claims in 2023 as a Clinical Cardiac Electrophysiology Physician in LANGHORNE, Pennsylvania, prescribing 84% generic.

510
Part D claims, 2023
84%
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.

KARIM NATHAN, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

510 Top 34% higher than 66% 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%). This entry sits in this band. 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 certification likely (heuristic — not verified)

KARIM NATHAN, 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 KARIM NATHAN, M.D.?

Quality data not reported

NPI registry status

Active

Issued 09/07/2014

NPI 1639570849

Primary specialty

Clinical Cardiac Electrophysiology Physician

Niche

1,570 US NPIs in this specialty

Medicare Part D claims

510 68% vs specialty avg

2023 prescription claims

Specialty avg: 1,596

Specialty distribution in Pennsylvania

How Clinical Cardiac Electrophysiology Physician compares to other specialties among Pennsylvania providers

Pennsylvania providers

Clinical Cardiac Electrophysiology Physician share within Pennsylvania

1. Clinical Cardiac Electrophysiology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Cardiac Electrophysiology Physician share within Pennsylvania

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Cardiac Electrophysiology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Clinical Cardiac Electrophysiology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Cardiac Electrophysiology 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).

KARIM NATHAN, M.D. appears in the CMS NPPES registry as a Clinical Cardiac Electrophysiology Physician provider holding M.D. credentials at 1205 LANGHORNE NEWTOWN RD STE 400, LANGHORNE, PA, 19047, with a listed phone of (215) 757-7212. NPI 1639570849 was issued on 09/07/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NATHAN 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 510 prescription claims written by this provider, covering 134 Medicare beneficiaries and totaling roughly $85K in drug spend, split 16% brand-name and 84% 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.

Clinical Cardiac Electrophysiology Physician is a narrow specialty nationwide, with 1,570 enrolled providers across 52 states and an average of 1,596 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

1205 LANGHORNE NEWTOWN RD STE 400
LANGHORNE, PA 19047

Provider Details

NPI 1639570849
Specialty Clinical Cardiac Electrophysiology Physician
Credentials M.D.
Gender Male
NPI Issued 09/07/2014

Hospital and facility affiliations

Facilities where KARIM NATHAN, 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.

TRINITY HEALTH MID-ATLANTIC MEDICAL GROUP
LANGHORNE, PA

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 KARIM NATHAN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$417

Largest payer

Boston Scientific 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 — Pennsylvania PA-BOM 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 ~45K Pennsylvania medical licensees in 2023 — they are NOT specific to KARIM NATHAN, M.D.. To verify KARIM NATHAN, M.D.'s current license status, search the PA-BOM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

133
Total board actions, Pennsylvania 2023
Across 129 cases
2.96
Actions per 1,000 licensees
Pennsylvania statewide rate
probation
Most common action type
48 cases

PA-BOM 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 Pennsylvania disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

KARIM NATHAN, M.D. — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 510 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.

510
Total Claims
$85K
Total Drug Cost
134
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
774
Total Day Supply
22,636
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$71K
Generic Drug Cost
$14K
Antibiotic Claims
12

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
1.95
Gender Split
46% female / 54% male
Age Distribution
<65: 12, 65-74: 62, 75-84: 38, 85+: 22

Top Prescribed Drugs (Medicare Part D)

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

What KARIM NATHAN, 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
Metoprolol Succinate
99
Eliquis
Apixaban
63
Flecainide Acetate
60
Metoprolol Tartrate
39
Amiodarone Hcl
29
Amlodipine Besylate
23
Dofetilide
23
Diltiazem 24hr Er (Cd)
Diltiazem Hcl
18
Clopidogrel
Clopidogrel Bisulfate
17
Pantoprazole Sodium
15

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

Clinical Cardiac Electrophysiology Physician Overview

How KARIM NATHAN, M.D. fits within the Clinical Cardiac Electrophysiology Physician landscape nationally.

1,570
Clinical Cardiac Electrophysiology Physician Providers in US
52
States with Clinical Cardiac Electrophysiology Physician
1,596
Avg Claims per Provider

KARIM NATHAN, M.D.'s 510 claims are below the specialty average of 1,596.

Nearby Clinical Cardiac Electrophysiology Physician Providers in Pennsylvania

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

Compare Clinical Cardiac Electrophysiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KARIM NATHAN, M.D.'s specialty?
KARIM NATHAN, M.D. specializes in Clinical Cardiac Electrophysiology Physician and practices in LANGHORNE, Pennsylvania. Credentials: M.D..
How much does KARIM NATHAN, M.D. prescribe under Medicare Part D?
In 2023, KARIM NATHAN, M.D. wrote 510 Medicare Part D claims totaling $85K in drug costs for 134 beneficiaries.
Where is KARIM NATHAN, M.D. located?
KARIM NATHAN, M.D. is located at 1205 LANGHORNE NEWTOWN RD STE 400, LANGHORNE, PA, 19047. Phone: (215) 757-7212.
What is KARIM NATHAN, M.D.'s NPI number?
KARIM NATHAN, M.D.'s National Provider Identifier (NPI) is 1639570849, issued on 09/07/2014.
Does KARIM NATHAN, M.D. prescribe more brand-name or generic drugs?
KARIM NATHAN, M.D.'s prescribing is 16% brand-name and 84% generic drugs by claim count, with $71K in brand drug costs.
How many Clinical Cardiac Electrophysiology Physician providers are there in the US?
There are 1,570 Clinical Cardiac Electrophysiology Physician providers across 52 states in the US. The average Clinical Cardiac Electrophysiology Physician provider writes 1,596 Medicare Part D claims per year.
What drugs does KARIM NATHAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, KARIM NATHAN, M.D.'s most frequently prescribed drugs include Metoprolol Succinate, Eliquis, Flecainide Acetate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KARIM NATHAN, M.D. accept Medicare?
KARIM NATHAN, M.D. appears in CMS Medicare data with 510 Part D claims and 134 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KARIM NATHAN, M.D.'s credentials?
KARIM NATHAN, M.D.'s NPI is 1639570849 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