Loreen Herwaldt, MD
NPI 1811979131 · Infectious Disease Physician · Iowa City, IA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Loreen Herwaldt, MD is a Infectious Disease Physician provider in Iowa City, IA (NPI 1811979131).
Provider details
- NPI number
- 1811979131
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 26211 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (2)
- 540 E Jefferson St Ste 400Iowa City, IA 52245-2479Phone: (319) 688-7440Fax: (319) 887-2971
- 701 W Forevergreen RdNorth Liberty, IA 52317-9848Phone: (319) 356-2633Fax: (319) 356-3949
Registry dates
- Enumerated
- 2005-11-14
- Last updated
- 2025-08-05
- Certified
- 2025-08-05
Frequently asked questions
- What is Loreen Herwaldt's NPI number?
- Loreen Herwaldt's National Provider Identifier (NPI) is 1811979131, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Loreen Herwaldt's specialty?
- Loreen Herwaldt is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Loreen Herwaldt located?
- Loreen Herwaldt's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is Loreen Herwaldt's phone number?
- The practice phone number listed in the NPPES registry for Loreen Herwaldt is (319) 356-8150.
- Does Loreen Herwaldt accept Medicare?
- Loreen Herwaldt is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Loreen Herwaldt's NPI active?
- Yes — Loreen Herwaldt's NPI (1811979131) is active in the NPPES registry as of the last update on 2025-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.