Chen Tan, M.D.
NPI 1285898494 · Infectious Disease Physician · Iowa City, IA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chen Tan, M.D. is a Infectious Disease Physician provider in Iowa City, IA (NPI 1285898494).
Provider details
- NPI number
- 1285898494
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD-51153 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
4 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
71 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 53 | $73 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 18 | $45 |
Typical Medicare-allowed amounts for these services range $45–$73 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (3)
- 540 E Jefferson St Ste 400Iowa City, IA 52245-2479Phone: (319) 688-7440
- 500 E Market StIowa City, IA 52245-2633Phone: (319) 339-3551
- 701 W Forevergreen RdNorth Liberty, IA 52317-9848Phone: (319) 356-2633Fax: (319) 356-3949
Registry dates
- Enumerated
- 2008-07-16
- Last updated
- 2025-08-06
- Certified
- 2025-08-06
Frequently asked questions
- What is Chen Tan's NPI number?
- Chen Tan's National Provider Identifier (NPI) is 1285898494, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chen Tan's specialty?
- Chen Tan is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Chen Tan located?
- Chen Tan's practice location on file with NPPES is 200 Hawkins Dr, Iowa City, IA 52242-1009.
- What is Chen Tan's phone number?
- The practice phone number listed in the NPPES registry for Chen Tan is (319) 335-0685.
- Does Chen Tan accept Medicare?
- Chen Tan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chen Tan's NPI active?
- Yes — Chen Tan's NPI (1285898494) is active in the NPPES registry as of the last update on 2025-08-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.