Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Thoo H Tan, DO

Individual provider Obstetrics & Gynecology Physician · NPI 1104857127

Thoo H Tan, DO is an Obstetrics/Gynecology in Algona, Iowa. Qualified in 1990, 36 years ago. Practices with North Iowa Mercy Clinics, a 300-clinician group and works from 2 locations. Licensed in Iowa.

Years since qualifying
36
Licensed in
IA
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

1515 S Phillips St
Algona, IA 50511-3649
Phone: (515) 295-2451
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1010 4th St Sw, Mason City, IA 50401-2857 — (641) 428-5100

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 02918 (IA)

Record details

NPI number1104857127
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJuly 6, 2006
Last updated in NPPESJune 1, 2026
Certification dateJune 1, 2026
Mailing address1010 4th St Sw Ste 220, Mason City, IA 50401-2856

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Also practisesEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Group practice North Iowa Mercy Clinics — 300 clinicians
Accepts Medicare assignment Not indicated
Practice locations7 on file with Medicare

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