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THOO H TAN DO
NPI 1104857127
Obstetrics & Gynecology in Algona, IA

Active since July 06, 2006PECOS Enrolled
1515 S PHILLIPS ST, ALGONA, IA 50511(515) 295-2451 Get Directions Write a Review

NPPES record last updated: June 1, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 1, 2026, Apr 20, 2021, Jul 17, 2020 and 1 more (4 updates tracked since 2016).

About Thoo H Tan Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THOO H TAN DO (NPI 1104857127) is an individual obstetrics & gynecology provider in Algona, Iowa, licensed in Iowa (02918) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Mercyone North Iowa Medical Center, and maintains a secondary practice location in Mason City.

NPPES Registry Identity

NPI1104857127
Entity TypeIndividualMale
Primary Taxonomy207V00000X
Provider Legal NameTHOO H TANCredential: DO
Location Address1515 S PHILLIPS STAlgona, IA 50511-3649
Mailing Address1010 4th St Sw Ste 220Mason City, IA 50401-2856 · (641) 428-5100 · Fax (641) 428-5115
Phone(515) 295-2451
Sole ProprietorNo
Medical School CMSOtherGraduated 1990
Enumeration DateJuly 6, 2006
Last NPPES UpdateJune 1, 20264 updates tracked since enumeration
NPPES CertifiedJune 1, 2026
✔ NPI 1104857127 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in IA · 02918
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1515 S PHILLIPS ST, Algona, IA 50511
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Secondary Practice Location 1

Location 11010 4th St SW, SUITE 220Mason City, IA 50401-2857 · Phone (641) 428-5100 · Fax (641) 428-5115

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Thoo H Tan Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7911003470
PECOS Enrollment IDI20070501000178
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

6

Medicare enrollment records show Thoo Tan reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Kossuth Regional Health Center
Same address
Family Medicine
1519 S PHILLIPS ST
Algona, IA 50511
  • Reassigned Medicare billing, Iowa enrollment
  • Also billed through NPI 1841361276 (Iowa)
  • 27 clinicians in this Medicare group
NPI 1184636557 (515) 295-7714
Hancock County Health System
21 mi
Family Medicine
532 1ST ST NW
Britt, IA 50423
  • Reassigned Medicare billing, Iowa enrollment
  • 50 clinicians in this Medicare group
NPI 1144434283 (641) 843-5000
North Iowa Mercy Clinics
33 mi
Family Medicine
635 E US HIGHWAY 9
Forest City, IA 50436
  • Reassigned Medicare billing, Iowa enrollment
  • 420 clinicians in this Medicare group
NPI 1811003015 (641) 585-2904
Mason City Clinic PC
52 mi
Otolaryngology
250 S CRESCENT DR
Mason City, IA 50401
  • Reassigned Medicare billing, Iowa enrollment
  • 65 clinicians in this Medicare group
NPI 1043254055 (800) 622-1411
Ellsworth Municipal Hospital
61 mi
Critical Access
920 SOUTH OAK ST.
Iowa Falls, IA 50126
  • Reassigned Medicare billing, Iowa enrollment
  • Also billed through NPI 1275697039 (Iowa)
  • 46 clinicians in this Medicare group
NPI 1831296052 (641) 648-4631
Mercy Medical Center - New Hampton
96 mi
Family Medicine
308 N MAPLE AVE
New Hampton, IA 50659
  • Reassigned Medicare billing, Iowa enrollment
  • Also billed through NPI 1770651515 (Iowa)
  • 46 clinicians in this Medicare group
NPI 1568474369 (641) 394-2151

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
72 services46 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
32 services32 patients
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212
This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.
23 services20 patients
Biopsy of lining of uterus 58100
A biopsy of the uterus lining is a medical procedure where a small sample of tissue is taken from the inner layer of your uterus. This is done to check for any abnormal cells or conditions. It's a common, quick process that helps in diagnosing various health issues.
12 services12 patients
New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more 99202
This service involves an initial visit to the doctor's office or other outpatient setting. It typically lasts between 15-29 minutes. The doctor will review your medical history, conduct a physical examination, and discuss your health concerns. It's a chance to establish your health baseline and address any immediate medical issues.
12 services12 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mercyone North Iowa Medical Center

Acute Care Hospitals · Mason City, IA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number160064
Location1000 Fourth Street SWMason City, IA 50401 · Cerro Gordo County
Emergency services Birthing friendly

Hancock County Health System

Critical Access Hospitals · Britt, IA
OwnershipGovernment - Local
CMS Certification Number161307
Location532 1st St NWBritt, IA 50423 · Hancock County
Emergency services

Kossuth Regional Health Center

Critical Access Hospitals · Algona, IA
1/5 CMS rating
OwnershipGovernment - Local
CMS Certification Number161353
Location1515 South Phillips StreetAlgona, IA 50511 · Kossuth County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 50511 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$122.23 typical visit price
range $52.96 – $161.40
Typical copayment $30.55 (range $13.24 – $40.35)
Most-billed visit code 99204
Established Patient
$66.36 typical visit price
range $16.91 – $131.98
Typical copayment $16.59 (range $4.22 – $32.99)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALEX SCOTT FARRELL NP
Nurse Practitioner (Family)
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-2451
MR. MARC R PETERSON PA
Physician Assistant
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-7714
ALLISON MARIE RAUSCH
Family Medicine
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-7714
REESE ROSENMEYER
Student in an Organized Health Care Education/Training Program
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-2451
MRS. DEBRA J. STUDER RD,LD,CDE
Dietitian, Registered
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-4670
KOSSUTH REGIONAL HEALTH CENTER
Home Health
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-2451
HAILEY ANNE SATYNA
Physician Assistant
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-7714
KOSSUTH REGIONAL HEALTH CENTER
General Acute Care Hospital (Critical Access)
1515 S PHILLIPS ST
ALGONA, IA 50511
Kossuth County (515) 295-2451

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Thoo Tan's NPI number?

The NPI number for Thoo Tan is 1104857127. It was assigned to this individual provider in the NPPES registry on July 6, 2006.

Where is Thoo Tan located?

Thoo Tan practices at 1515 S Phillips St, Algona, IA 50511. The listed phone number is (515) 295-2451.

What is Thoo Tan's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Thoo Tan enrolled in Medicare?

Yes. Thoo Tan is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Thoo Tan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thoo Tan reassigns Medicare benefits to 6 organizations: Kossuth Regional Health Center (Algona, IA), Hancock County Health System (Britt, IA), North Iowa Mercy Clinics (Forest City, IA), Mason City Clinic PC (Mason City, IA), Ellsworth Municipal Hospital (Iowa Falls, IA) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Thoo Tan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Thoo Tan accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and Oscar Insurance Company and 1 other insurer list Thoo Tan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Thoo Tan affiliated with any hospitals?

According to CMS data, Thoo Tan is affiliated with Mercyone North Iowa Medical Center, Hancock County Health System and Kossuth Regional Health Center.

When was this NPI record last updated?

The NPPES record for Thoo Tan was last updated on June 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.