Justin L. Knowles, MD
Critical Care Medicine (Internal Medicine) Physician · Danville, PA
Justin L. Knowles, MD is a critical care medicine (internal medicine) physician with a practice address in Danville, Pennsylvania, and NPI 1659456861, issued on Oct 26, 2006. Check the license (Pennsylvania MD456998, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Justin L. Knowles
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- MD456998 PA
Self-reported in NPPES; status is on the state search - Practice location
- 100 North Academy Avenue, Danville, PA 17822
- Phone
- (570) 271-6389
- Enumerated
- Oct 26, 2006
- Record last updated
- Aug 24, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (570) 271-6021
- Medicare enrollment
- Enrolled (PECOS I20200424001760); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 332 in Pennsylvania → Look up another NPI →
Also registered at 100 North Academy Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Malak Al-BitarStudent in an Organized Health Care Education/Training Program1730823790
- Sejin BaeOral & Maxillofacial Surgery (D.M.D.)1528697109
- Vidya Bollavaram, M.D.Student in an Organized Health Care Education/Training Program1942944467
- Anish Chandran Chandra SenanStudent in an Organized Health Care Education/Training Program1730016965
- Ronald Evans, D.O.Critical Care Medicine (Internal Medicine) Physician1538193032
- Asim Khan, M.D.Student in an Organized Health Care Education/Training Program1386431732
Verify Justin L. Knowles in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD456998Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2 hospitals and group practices
- Grand River Hospital DistrictRifle, CO · Critical Access Hospitals
- Ihc Health Services IncSalt Lake City, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Justin L. Knowles among 332 critical care medicine (internal medicine) physician records in Pennsylvania
Justin L. Knowles, MD is one of 332 critical care medicine (internal medicine) physician records with a practice address in Pennsylvania. 92% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 67% newer
- In a Medicare fileYes · 92% of these records are
- In the CMS Doctors and Clinicians fileYes · 85% of these records are
- Graduated2002 · median 2007 among the 282 with a school on file
- Record last updated2016 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Pennsylvania
There are 332 critical care medicine (internal medicine) physician records in Pennsylvania.
All 332 in Pennsylvania → Every provider in Danville → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Abbas Ali, M.DDanville, PA 178221154464162
- Jairo Barrantes Perez, M.D.Danville, PA 178221730373705
- Ronald Evans, D.O.Danville, PA 178221538193032
- Marilyn Haupt, M.D.Danville, PA 178221851360366
- Raghad Hussein, MDDanville, PA 178221801147459
- Karen Korzick, MDDanville, PA 178221750322509
- Joshua Long, D.O.Danville, PA 178221093955619
- John McIlwaine, DODanville, PA 178221346249125
Common questions
What is Justin L. Knowles, MD's NPI number?
Justin L. Knowles, MD's National Provider Identifier (NPI) is 1659456861, issued on Oct 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Justin L. Knowles, MD located?
The NPPES record lists a practice address at 100 North Academy Avenue, Danville, PA, 17822. Phone: (570) 271-6389. Providers update this record themselves, so call before visiting.
How can I verify Justin L. Knowles, MD's license?
NPPES lists Pennsylvania license number MD456998, 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.
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.