Alan Gunderson, M.D.
NPI 1942404785 · Hepatology Physician · Iowa City, IA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alan Gunderson, M.D. is a Hepatology Physician provider in Iowa City, IA (NPI 1942404785).
Provider details
- NPI number
- 1942404785
- Entity type
- Individual
- Primary specialty
- Hepatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 52443-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
393 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 134 | $132 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 57 | $73 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 42 | $90 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 30 | $120 |
| Moderate Sedation Services Provided By the Same Physician Or Other Qualified Health Care Professional Performing a Gastrointestinal Endoscopic Service That Sedation Supports, Requiring the Presence of an Independent Trained Observer to Assist in the MonitoG0500 | 30 | $5 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tacrolimus | 298 | 61 |
| Ursodiol | 235 | 53 |
| Mycophenolate Mofetil | 117 | 25 |
| Spironolactone | 79 | 26 |
| Furosemide | 73 | 24 |
| Rifaximinbrand: Xifaxan | 63 | — |
| Prednisone | 47 | 14 |
| Lactulose | 46 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-06-14
- Last updated
- 2021-09-02
- Certified
- 2021-09-02
Frequently asked questions
- What is Alan Gunderson's NPI number?
- Alan Gunderson's National Provider Identifier (NPI) is 1942404785, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alan Gunderson's specialty?
- Alan Gunderson is listed in the NPPES registry with a primary specialty of Hepatology Physician (Allopathic & Osteopathic Physicians).
- Where is Alan Gunderson located?
- Alan Gunderson's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is Alan Gunderson's phone number?
- The practice phone number listed in the NPPES registry for Alan Gunderson is (319) 356-4901.
- Does Alan Gunderson accept Medicare?
- Alan Gunderson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alan Gunderson's NPI active?
- Yes — Alan Gunderson's NPI (1942404785) is active in the NPPES registry as of the last update on 2021-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.