Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Grieco, MD

Individual provider Anesthesiology Physician · NPI 1548357403

William Grieco, MD practises Anesthesiology in Philadelphia, Pennsylvania. Graduated from Jefferson Medical College of Thomas Jefferson University in 1988, 38 years ago. Practices with Northstar Anesthesia of Pennsylvania LLC, a 92-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
38
Trained at
Jefferson Medical College of Thomas Jefferson University
Licensed in
PA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2601 Holme Ave
Philadelphia, PA 19152-2007
Phone: (215) 335-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence MD042085L (PA)

Record details

NPI number1548357403
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 10, 2006
Last updated in NPPESOctober 14, 2019

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolJEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated 1988 (38 years in practice)
Group practice Northstar Anesthesia Of Pennsylvania Llc — 92 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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.

Upper gastrointestinal (GI) endoscopy for acid reflux 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 patients199
Services billed 216 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Northstar Anesthesia of Pennsylvania LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 92 clinicians in the practice; 12 are shown here.

Other providers in Philadelphia