Registry data as of Aug 27, 2026

Stephen Ksiazek, M.D.

Cardiovascular Disease Physician · Bethlehem, PA

Stephen Ksiazek, M.D. is a cardiovascular disease physician with a practice address in Bethlehem, Pennsylvania, and NPI 1851346738, issued on May 23, 2006. Check the license (Pennsylvania MD051899L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1851346738
Name
Stephen Ksiazek
Credential
M.D.
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License number
MD051899L PA
Self-reported in NPPES; status is on the state search
Practice location
2649 Schoenersville RD Ste 301, Bethlehem, PA 18017
Phone
(484) 884-4799
Enumerated
May 23, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 2649 Schoenersville RD Ste 301

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lauren Barbour, CRNPAcute Care Nurse Practitioner1457925968
  2. Kareem Elsayed, MDNeurology Physician1255828216
  3. Desire Guthier, DOCardiovascular Disease Physician1538725817
  4. Paul Hermany, M.D.Interventional Cardiology Physician1669784880
  5. Patricia Klein, CRNPFamily Nurse Practitioner1336807429
  6. Elizabeth LieboldAcute Care Nurse Practitioner1023779147

Verify Stephen Ksiazek in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
    Search for license MD051899L    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Pennsylvania license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

29% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024

2,221 Medicare Part D claims for 455 beneficiaries, against an average of 3,149 among the 19,556 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.

  1. Stephen Ksiazek2,221
  2. Specialty average3,149

Most prescribed

  1. Metoprolol Succinate334 claims
  2. Eliquis215 claims
  3. Atorvastatin Calcium163 claims
  4. Xarelto161 claims
  5. Rosuvastatin Calcium121 claims
  6. Amlodipine Besylate105 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $124.74

1 payment, mostly food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 16,209 providers of this specialty with any payment received $4,923.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Stephen Ksiazek$124.74
  2. Specialty average$4,923.81

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital or facility affiliation

  1. Lehigh Valley Physician GroupBethlehem, PA

Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Cardiovascular Disease Physician providers in Pennsylvania

There are 1,381 cardiovascular disease physician records in Pennsylvania.

All 1,381 in Pennsylvania → Every provider in Bethlehem →

Other cardiovascular disease physician records in Pennsylvania

  1. Abdul Abbasi, MDUniontown, PA1467408864
  2. Richard Abramowitz, MDKingston, PA1265545990
  3. Sandra Abramson, MDWynnewood, PA1275538282
  4. Elizabeth Adams, DOHershey, PA1780885434
  5. David Addley, D.O.Philadelphia, PA1881767374
  6. Michael Adesman, MDUpland, PA1932101888
  7. Gur Adhar, M.D.Pittsburgh, PA1609871052
  8. James Adisey, M.D.Greensburg, PA1033228622
  9. Nana Afari-Armah, MDPhiladelphia, PA1023244639
  10. Shweta Aggarwal, MDWormleysburg, PA1053568972

Common questions

What is Stephen Ksiazek, M.D.'s NPI number?

Stephen Ksiazek, M.D.'s National Provider Identifier (NPI) is 1851346738, issued on May 23, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Stephen Ksiazek, M.D. located?

The NPPES record lists a practice address at 2649 Schoenersville RD Ste 301, Bethlehem, PA, 18017. Phone: (484) 884-4799. Providers update this record themselves, so call before visiting.

How can I verify Stephen Ksiazek, M.D.'s license?

NPPES lists Pennsylvania license number MD051899L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Stephen Ksiazek, M.D. prescribe under Medicare Part D?

In 2024, Stephen Ksiazek, M.D. had 2,221 Medicare Part D claims for 455 beneficiaries; the average among cardiovascular disease physician prescribers was 3,149. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.