Loreen A. Herwaldt, MD
Infectious Disease Physician · Iowa City, IA
Loreen A. Herwaldt, MD is an infectious disease physician with a practice address in Iowa City, Iowa, and NPI 1811979131, issued on Nov 14, 2005. Check the license (Iowa 26211, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Loreen A. Herwaldt
- Credential
- MD
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 26211 IA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Hawkins Dr, Iowa City, IA 52242
- Phone
- (319) 356-8150
- Enumerated
- Nov 14, 2005
- Record last updated
- Aug 5, 2025
- Fax
- (319) 356-4600
- Medicare enrollment
- Enrolled (PECOS I20100208000430); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1977
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 75 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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- Francois Abboud, MDCardiovascular Disease Physician1598753113
- Abdalla Abdalla, MBBCHAnatomic Pathology & Clinical Pathology Physician1518859826
- Sameh AbdallaAnatomic Pathology & Clinical Pathology Physician1437902160
Verify Loreen A. Herwaldt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 26211Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average infectious disease physician in 2024
15 Medicare Part D claims, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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
- State University OF IowaIowa City, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Loreen A. Herwaldt among 75 infectious disease physician records in Iowa
Loreen A. Herwaldt, MD is one of 75 infectious disease physician records with a practice address in Iowa. 87% 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, 76% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1977 · median 2003 among the 54 with a school on file
- Record last updated2025 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Iowa
There are 75 infectious disease physician records in Iowa.
All 75 in Iowa → Every provider in Iowa City → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Jason Barker, MDIowa City, IA 522421730161050
- Peter Densen, MDIowa City, IA 522421518949825
- Michael Edmond, M.D.Iowa City, IA 522421568552107
- Birgir Johannsson, MDIowa City, IA 522421528172418
- Louis Kirchhoff, MDIowa City, IA 522421174510283
- Jeffery Meier, MDIowa City, IA 522421760470678
- William Nauseef, MDIowa City, IA 522421992793848
- Michael Ohl, MDIowa City, IA 522421518903509
Common questions
What is Loreen A. Herwaldt, MD's NPI number?
Loreen A. Herwaldt, MD's National Provider Identifier (NPI) is 1811979131, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Loreen A. Herwaldt, MD located?
The NPPES record lists a practice address at 200 Hawkins Dr, Iowa City, IA, 52242. Phone: (319) 356-8150. Providers update this record themselves, so call before visiting.
How can I verify Loreen A. Herwaldt, MD's license?
NPPES lists Iowa license number 26211, 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 Loreen A. Herwaldt, MD prescribe under Medicare Part D?
In 2024, Loreen A. Herwaldt, MD had 15 Medicare Part D claims; the average among infectious disease physician prescribers was 689. 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.