David L. Irwin
Internal Medicine Physician · Bethlehem, PA
David L. Irwin is an internal medicine physician with a practice address in Bethlehem, Pennsylvania, and NPI 1467987081, issued on Apr 21, 2017. Check the license (Pennsylvania OS022501, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- David L. Irwin
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- OS022501 PA
305964 NY
Self-reported in NPPES; status is on the state search - Practice location
- 801 Ostrum St, Bethlehem, PA 18015
- Phone
- (267) 614-7391
- Enumerated
- Apr 21, 2017
- Record last updated
- Aug 12, 2025
- Medicaid IDs
- 06087847 NY
103806541 PA - Medicare enrollment
- Enrolled (PECOS I20221229000092); accepts Medicare assignment
- Medical or professional school
- Lake Erie Col Of Osteo Med At Seton Hill Univ, 2017
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 801 Ostrum St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rama Abbireddy, PAPhysician Assistant1912887555
- Herman AbuchowskiCertified Registered Nurse Anesthetist1669148573
- Daniel Ackerman, M.D.Neurology Physician1154642338
- Kathleen Ackert, DOObstetrics & Gynecology Physician1053933648
- Rachel Ackley, M.S. CCC-SLPSpeech-Language Pathologist1942640321
- Samuel Acquah, MDAnesthesiology Physician1851823785
Verify David L. Irwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS022501Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average internal medicine physician in 2024
261 Medicare Part D claims for 123 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone20 claims
- Pantoprazole Sodium15 claims
- Furosemide11 claims
- Metoprolol Succinate11 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.
The MIPS final score for 2023 (Medicare payment program): 95.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- St Lukes Physician Group IncEaston, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David L. Irwin among 7,300 internal medicine physician records in Pennsylvania
David L. Irwin is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 68% of them.
- NPI issued2017 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2017 · median 2008 among the 4,208 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
157 internal medicine physician records list a practice address in Bethlehem
They are 157 of the 4,797 NPPES records with a practice address in Bethlehem, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Bethlehem → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- George Daoud, DOBethlehem, PA 180151861597585
- Fabio Dorville, M.D.Fountain Hill, PA 180151396794913
- Kaushik Kundu, M.D.Fountain Hill, PA 180151942259577
- David Leh, MDBethlehem, PA 180151174621981
- Hetul Mehta, D.O.Bethlehem, PA 180151578669479
Common questions
What is David L. Irwin's NPI number?
David L. Irwin's National Provider Identifier (NPI) is 1467987081, issued on Apr 21, 2017. An NPI identifies a provider in billing; it is not a license.
Where is David L. Irwin located?
The NPPES record lists a practice address at 801 Ostrum St, Bethlehem, PA, 18015. Phone: (267) 614-7391. Providers update this record themselves, so call before visiting.
How can I verify David L. Irwin's license?
NPPES lists Pennsylvania license number OS022501, 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 David L. Irwin prescribe under Medicare Part D?
In 2024, David L. Irwin had 261 Medicare Part D claims for 123 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is David L. Irwin's MIPS final score?
The 2023 MIPS final score is 95.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 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.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.