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

David S Grenda, MD, PHD

Individual provider Anesthesiology Physician · NPI 1336344928

David S Grenda, MD, PHD practises Anesthesiology in Eau Claire, Wisconsin. Qualified in 2007, 19 years ago. Practices with Northside Primary Care Professional Services, LLC, a 311-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Georgia and Wisconsin.

Years since qualifying
19
Licensed in
GA, WI
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1400 Bellinger St
Eau Claire, WI 54703-5222
Phone: (715) 833-5222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1800 Howell Mill Rd Nw, Atlanta, GA 30318-2538 — (404) 351-1745

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 86153-20 (WI)
Anesthesiology Physician Taxonomy 207L00000X · Licence 69909 (GA)
Critical Care Medicine (Anesthesiology) Physician Taxonomy 207LC0200X · Licence 69909 (GA)

Record details

NPI number1336344928
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedJune 15, 2007
Last updated in NPPESSeptember 5, 2025
Certification dateSeptember 5, 2025

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Northside Primary Care Professional Services,Llc — 311 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients271
Services billed 454 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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Northside Primary Care Professional Services, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 311 clinicians in the practice; 12 are shown here.

Other providers in Eau Claire