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

Individual provider Family Medicine Physician · NPI 1437347879

Dr. Januario Lee Natanauan, MD is a Family Practice in Rockford, Illinois. Qualified in 2003, 23 years ago. Practices with Straub Clinic and Hospital, a 423-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
23
Licensed in
IL
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1215 N Alpine Rd
Rockford, IL 61107-2201
Phone: (815) 391-7800
Fax: (815) 391-7794
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 036122920 (IL)

Record details

NPI number1437347879
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 10, 2007
Last updated in NPPESMarch 15, 2010

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolOTHER
Graduated 2003 (23 years in practice)
Group practice Straub Clinic And Hospital — 423 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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