Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Greg Harrison Fischer, DO

Individual provider Emergency Medicine Physician · NPI 1851886923

Greg Harrison Fischer, DO practises Emergency Medicine in Allentown, Pennsylvania. Graduated from Lake Erie Col of Osteopathic Medicine, Bradenton in 2018, 8 years ago. Practices with Lehigh Valley Physician Group, a 2,493-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Pennsylvania and Virginia.

Years since qualifying
8
Trained at
Lake Erie Col of Osteopathic Medicine, Bradenton
Licensed in
PA, VA
In the registry since
2018
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1200 S Cedar Crest Blvd
Allentown, PA 18103-6202
Phone: (484) 862-3232
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1906 Belleview Ave Se, Roanoke, VA 24014-1838 — (540) 981-7000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence OS020331 (PA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 0102207061 (VA)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence OT018471 (PA)

Record details

NPI number1851886923
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 29, 2018
Last updated in NPPESAugust 10, 2023
Certification dateAugust 10, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolLAKE ERIE COL OF OSTEOPATHIC MEDICINE, BRADENTON
Graduated 2018 (8 years in practice)
Group practice Lehigh Valley Physician Group — 2493 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients442
Services billed 516 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $95 4 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Lehigh Valley Physician Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2493 clinicians in the practice; 12 are shown here.

Other providers in Allentown