Thoo Tan, DO
NPI 1104857127 · Obstetrics & Gynecology Physician · Algona, IA
Thoo Tan, DO is a Obstetrics & Gynecology Physician provider in Algona, IA (NPI 1104857127).
Provider details
- NPI number
- 1104857127
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 02918 (IA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
151 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 72 | $61 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 32 | $75 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 23 | $32 |
| Biopsy of Lining of Uterus58100 | 12 | $57 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 12 | $44 |
Typical Medicare-allowed amounts for these services range $32–$75 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$31 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1010 4th St SwSuite 220Mason City, IA 50401-2857Phone: (641) 428-5100Fax: (641) 428-5115
Registry dates
- Enumerated
- 2006-07-06
- Last updated
- 2026-06-01
- Certified
- 2026-06-01
Frequently asked questions
- What is Thoo Tan's NPI number?
- Thoo Tan's National Provider Identifier (NPI) is 1104857127, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thoo Tan's specialty?
- Thoo Tan is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Thoo Tan located?
- Thoo Tan's practice location on file with NPPES is 1515 S Phillips St, Algona, IA 50511-3649.
- What is Thoo Tan's phone number?
- The practice phone number listed in the NPPES registry for Thoo Tan is (515) 295-2451.
- Is Thoo Tan's NPI active?
- Yes — Thoo Tan's NPI (1104857127) is active in the NPPES registry as of the last update on 2026-06-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.