Jonathan I. Fischer, MD
Emergency Medicine Physician · Philadelphia, PA
Jonathan I. Fischer, MD is an emergency medicine physician with a practice address in Philadelphia, Pennsylvania, and NPI 1992966691, issued on Jun 24, 2008. Check the license (Pennsylvania MD439702, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Jonathan I. Fischer
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD439702 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1020 Sansom St, Philadelphia, PA 19107
- Phone
- (215) 955-6844
- Enumerated
- Jun 24, 2008
- Record last updated
- Nov 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (215) 955-2526
- Medicaid IDs
- 0236594 NJ
102479597 PA - Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,911 in Pennsylvania → Look up another NPI →
Also registered at 1020 Sansom St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Aini, MDEmergency Medicine Physician1598914137
- Laurence Anderson, DOEmergency Medicine Physician1235181892
- Andrew Aronson, MDEmergency Medicine Physician1720080302
- Arthur Au, MDEmergency Medicine Physician1760643829
- Jason Ausmus, PA-CPhysician Assistant1285803171
- Geraldine Baer, M.D., PH.D.Emergency Medicine Physician1730356890
Verify Jonathan I. Fischer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD439702Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% more Medicare Part D claims than the average emergency medicine physician in 2024
333 Medicare Part D claims for 206 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Amoxicillin-Clavulanate Potass26 claims
- Cefuroxime25 claims
- Pantoprazole Sodium24 claims
- Prednisone19 claims
- Oxycodone Hcl15 claims
- Cephalexin13 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.
Jonathan I. Fischer among 3,911 emergency medicine physician records in Pennsylvania
Jonathan I. Fischer, MD is one of 3,911 emergency medicine physician records with a practice address in Pennsylvania. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 38% of them.
- NPI issued2008 · 38% of these records are older, 57% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2011 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,006 emergency medicine physician records list a practice address in Philadelphia
They are 1,006 of the 42,849 NPPES records with a practice address in Philadelphia, and 3,911 emergency medicine physician records in Pennsylvania.
All 3,911 in Pennsylvania → Every provider in Philadelphia → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Laurence Anderson, DOPhiladelphia, PA 191071235181892
- Andrew Aronson, MDPhiladelphia, PA 191071720080302
- Roger Band, MDPhiladelphia, PA 191071760439723
- Kevin Baumlin, MDPhiladelphia, PA 191071659349603
- David Gaieski, MDPhiladelphia, PA 191071952341976
- Judd Hollander, MDPhiladelphia, PA 191071427098425
- Joel Kravitz, MDPhiladelphia, PA 191071548237589
- Bon Ku, MDPhiladelphia, PA 191071508812835
Common questions
What is Jonathan I. Fischer, MD's NPI number?
Jonathan I. Fischer, MD's National Provider Identifier (NPI) is 1992966691, issued on Jun 24, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan I. Fischer, MD located?
The NPPES record lists a practice address at 1020 Sansom St, Philadelphia, PA, 19107. Phone: (215) 955-6844. Providers update this record themselves, so call before visiting.
How can I verify Jonathan I. Fischer, MD's license?
NPPES lists Pennsylvania license number MD439702, 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 Jonathan I. Fischer, MD prescribe under Medicare Part D?
In 2024, Jonathan I. Fischer, MD had 333 Medicare Part D claims for 206 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.