David A. Katz, MD
Internal Medicine Physician · Iowa City, IA
David A. Katz, MD is an internal medicine physician with a practice address in Iowa City, Iowa, and NPI 1023090321, issued on Nov 14, 2005. Check the license (Iowa 34936, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- David A. Katz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 34936 IA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Hawkins Dr, Iowa City, IA 52242
- Phone
- (319) 356-1141
- Enumerated
- Nov 14, 2005
- Record last updated
- Dec 11, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (319) 356-3086
- Medicaid ID
- 0288597 IA
- Medicare enrollment
- Enrolled (PECOS I20100123000221); may accept Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1987
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →
Also registered at 200 Hawkins Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David A. Katz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 34936Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% more Medicare Part D claims than the average internal medicine physician in 2024
3,573 Medicare Part D claims for 199 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 322 claims were for opioids.
Most prescribed
- Atorvastatin Calcium204 claims
- Amlodipine Besylate130 claims
- Furosemide94 claims
- Rosuvastatin Calcium93 claims
- Lisinopril91 claims
- Oxycodone Hcl78 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.
David A. Katz among 871 internal medicine physician records in Iowa
David A. Katz, MD is one of 871 internal medicine physician records with a practice address in Iowa. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 89% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 44% of these records are
- Graduated1987 · median 2008 among the 386 with a school on file
- Record last updated2007 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
215 internal medicine physician records list a practice address in Iowa City
They are 215 of the 7,163 NPPES records with a practice address in Iowa City, and 871 internal medicine physician records in Iowa.
All 871 in Iowa → Every provider in Iowa City → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Thad Abrams, MDIowa City, IA 522421326022385
- Susan Beebout, MDIowa City, IA 522421790767127
- Christopher Goerdt, MDIowa City, IA 522421548258163
- William Haynes, MDIowa City, IA 522421083602601
- William Iverson, MDIowa City, IA 522421346238904
- Peter Kaboli, MDIowa City, IA 522421518949940
- Ann Machlab, MDIowa City, IA 522421780668004
- Barbara Muller, MDIowa City, IA 522421588652101
Common questions
What is David A. Katz, MD's NPI number?
David A. Katz, MD's National Provider Identifier (NPI) is 1023090321, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is David A. Katz, MD located?
The NPPES record lists a practice address at 200 Hawkins Dr, Iowa City, IA, 52242. Phone: (319) 356-1141. Providers update this record themselves, so call before visiting.
How can I verify David A. Katz, MD's license?
NPPES lists Iowa license number 34936, 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 David A. Katz, MD prescribe under Medicare Part D?
In 2024, David A. Katz, MD had 3,573 Medicare Part D claims for 199 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.