IndividualActiveAccepts Medicare

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)

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

Infectious Disease PhysicianPrimary207RI0200XLicense MD-51153 (IA)
Allopathic & Osteopathic Physicians
Internal Medicine Physician207R00000XLicense MD-51153 (IA)
Allopathic & Osteopathic Physicians
Infectious Disease Physician207RI0200XLicense 235922 (MA)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(70/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
17 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

200 Hawkins Dr

Iowa City, IA 52242-1009

Phone: (319) 335-0685

Fax: (319) 356-4600

Street-level locationGet directions

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Mailing address