Dennis C. Zachary, MD
Family Medicine Physician · Norwalk, IA
Dennis C. Zachary, MD is a family medicine physician with a practice address in Norwalk, Iowa, and NPI 1679583363, issued on Aug 8, 2006. Check the license (Iowa 26010, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Dennis C. Zachary
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 26010 IA
Self-reported in NPPES; status is on the state search - Practice location
- 9421 Marketplace Dr, Norwalk, IA 50211
- Phone
- (515) 974-0800
- Enumerated
- Aug 8, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (515) 974-0801
- Medicaid ID
- 0248120 IA
- Medicare enrollment
- Enrolled (PECOS I20100125000329); accepts Medicare assignment
- Medical or professional school
- Mayo Medical School, 1984
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Also registered at 9421 Marketplace Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Agey, DOFamily Medicine Physician1013926807
- Jessica Briggs, DOFamily Medicine Physician1497313902
- Amy Crane, PACMedical Physician Assistant1255320081
- Kiley Lomen, PA-CPhysician Assistant1063168664
- Daniel Oswald, DOFamily Medicine Physician1760053821
- Grace Valen GatrostPhysician Assistant1073203089
Verify Dennis C. Zachary in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 26010Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% more Medicare Part D claims than the average family medicine physician in 2024
5,746 Medicare Part D claims for 550 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 275 claims were for opioids.
Most prescribed
- Atorvastatin Calcium414 claims
- Amlodipine Besylate289 claims
- Levothyroxine Sodium157 claims
- Lisinopril156 claims
- Metformin Hcl150 claims
- Omeprazole150 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.
Bills Medicare through one group practice
- Mercy Clinics IncDes Moines, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis C. Zachary among 2,336 family medicine physician records in Iowa
Dennis C. Zachary, MD is one of 2,336 family medicine physician records with a practice address in Iowa. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1984 · median 2006 among the 1,367 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 family medicine physician records list a practice address in Norwalk
They are 11 of the 134 NPPES records with a practice address in Norwalk, and 2,336 family medicine physician records in Iowa.
All 2,336 in Iowa → Every provider in Norwalk → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michael Agey, DONorwalk, IA 502111013926807
- Jason Brehmer, DONorwalk, IA 502111629089974
- Jessica Briggs, DONorwalk, IA 502111497313902
- William Chase, MDNorwalk, IA 502111841259504
- Lori Miller, DONorwalk, IA 502111982664082
- Patricia Newland, MDNorwalk, IA 502111063471720
- Laura Nielsen, D.O.Norwalk, IA 502111922447234
- Daniel Oswald, DONorwalk, IA 502111760053821
Common questions
What is Dennis C. Zachary, MD's NPI number?
Dennis C. Zachary, MD's National Provider Identifier (NPI) is 1679583363, issued on Aug 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis C. Zachary, MD located?
The NPPES record lists a practice address at 9421 Marketplace Dr, Norwalk, IA, 50211. Phone: (515) 974-0800. Providers update this record themselves, so call before visiting.
How can I verify Dennis C. Zachary, MD's license?
NPPES lists Iowa license number 26010, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dennis C. Zachary, MD prescribe under Medicare Part D?
In 2024, Dennis C. Zachary, MD had 5,746 Medicare Part D claims for 550 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.