David S Grenda, MD, PHD - Medicare Anesthesiology in Eau Claire, WI

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David S Grenda, MD, PHD is a medicare enrolled "Anesthesiology" physician in Eau Claire, Wisconsin. He went to Washington University School Of Medicine and graduated in 2007 and has 19 years of diverse experience with area of expertise as Anesthesiology. He is a member of the group practice Piedmont Anesthesia Llc, Piedmont Anesthesia Associates Llc, Northside Primary Care Professional Services,llc and his current practice location is 1400 Bellinger Street, Eau Claire, Wisconsin. You can reach out to his office (for appointments etc.) via phone at (715) 833-5222.

David S Grenda is licensed to practice in Wisconsin (license number 86153-20) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1336344928.

Contact Information

David S Grenda, MD, PHD
1400 Bellinger Street,
Eau Claire, WI 54703-5222
(715) 833-5222
Not Available

Map and Direction




Physician's Profile

Full NameDavid S Grenda
GenderMale
SpecialityAnesthesiology
Experience19 Years
Location1400 Bellinger Street, Eau Claire, Wisconsin
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • David S Grenda attended and graduated from Washington University School Of Medicine in 2007
  NPI Data:
  • NPI Number: 1336344928
  • Provider Enumeration Date: 06/15/2007
  • Last Update Date: 09/05/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 9234379264
  • Enrollment ID: I20130724000581

Medical Identifiers

Medical identifiers for David S Grenda such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1336344928NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207L00000XAnesthesiology 69909 (Georgia)Secondary
207L00000XAnesthesiology 86153-20 (Wisconsin)Primary
207LC0200XAnesthesiology - Critical Care Medicine 69909 (Georgia)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Northside Hospital ForsythCumming, GAHospital
Piedmont Fayette HospitalFayetteville, GAHospital
Piedmont Newnan Hospital, IncNewnan, GAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Piedmont Anesthesia Llc2163837972365
Piedmont Anesthesia Associates Llc3577457183248
Northside Primary Care Professional Services,llc9638343924282

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. David S Grenda allows following entities to bill medicare on his behalf.
Entity NamePiedmont Anesthesia Associates Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1407856594
PECOS PAC ID: 3577457183
Enrollment ID: O20040212000604
Entity NameAmerican Anesthesiology Associates Of Georgia Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1528068673
PECOS PAC ID: 7618934779
Enrollment ID: O20041210000442
Entity NameGwinnett Physician Group, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1578574661
PECOS PAC ID: 9133211139
Enrollment ID: O20070822001035
Entity NamePiedmont Cardiology Of Atlanta, Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275729691
PECOS PAC ID: 0345321691
Enrollment ID: O20080114000153
Entity NameNorthside Primary Care Professional Services,llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922397553
PECOS PAC ID: 9638343924
Enrollment ID: O20111123000206
Entity NamePiedmont Specialty Hospital Billing Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1699290510
PECOS PAC ID: 4183986490
Enrollment ID: O20180327001180
Entity NamePiedmont Anesthesia Llc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700474244
PECOS PAC ID: 2163837972
Enrollment ID: O20210208002823

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. David S Grenda is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
David S Grenda, MD, PHD
Po Box 860912, Provider Enrollment,
Minneapolis, MN 55486-0912

Ph: (507) 284-2511		David S Grenda, MD, PHD
1400 Bellinger Street,
Eau Claire, WI 54703-5222

Ph: (715) 833-5222

Reviews and Comments


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Michael Q Milz, M.D.
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Eric D Etzel, D.O.
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John M Evans, M.D.
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Frederick P Fetzer, DO
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Melissa Kenevan, MD
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Practice Location: 1400 Bellinger St, Eau Claire, WI 54703
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Steven M Kapla, M.D.
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Practice Location: 1221 Whipple St, Eau Claire, WI 54703
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Carmelina Gurrieri, M.D.
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Practice Location: 1221 Whipple St, Eau Claire, WI 54703
Phone: 715-838-5222    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.