Januario Lee Natanauan, M.D.
Family Medicine Physician · Rockford, IL
Januario Lee Natanauan, M.D. is a family medicine physician with a practice address in Rockford, Illinois, and NPI 1437347879, issued on Oct 10, 2007. Check the license (Illinois 036122920, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Januario Lee Natanauan
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036122920 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1215 N Alpine RD, Rockford, IL 61107
- Phone
- (815) 391-7800
- Enumerated
- Oct 10, 2007
- Record last updated
- Mar 15, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (815) 391-7794
- Medicare enrollment
- Enrolled (PECOS I20130225000354); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 1215 N Alpine RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rachael McPeek, NPFamily Medicine Physician1023642691
- Rachel Nicolai, PTPhysical Therapist1568550416
- Violet Roberson, DOFamily Medicine Physician1578536207
- Naoshiba Sajid, MDFamily Medicine Physician1942327994
Verify Januario Lee Natanauan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036122920Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average family medicine physician in 2024
832 Medicare Part D claims for 556 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate98 claims
- Prednisone71 claims
- Cephalexin51 claims
- Azithromycin46 claims
- Fluticasone Propionate45 claims
- Mupirocin43 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital affiliation
- Straub Clinic And HospitalHonolulu, HI · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Januario Lee Natanauan among 6,215 family medicine physician records in Illinois
Januario Lee Natanauan, M.D. is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 50% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2003 · median 2006 among the 3,714 with a school on file
- Record last updated2010 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
145 family medicine physician records list a practice address in Rockford
They are 145 of the 3,893 NPPES records with a practice address in Rockford, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Rockford → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Diana Alanis, MDRockford, IL 611071922007418
- Joy Deleoz, MDRockford, IL 611071083697171
- Steven Diamond, MDRockford, IL 611071861481244
- Chantal Girod, MDRockford, IL 611071881620383
- John Holtan, MDRockford, IL 611071831127224
- William Kobler, MDRockford, IL 611071588693626
- Steven Lidvall, MDRockford, IL 611071013946649
- Arpana Mathur, MDRockford, IL 611071023090560
Common questions
What is Januario Lee Natanauan, M.D.'s NPI number?
Januario Lee Natanauan, M.D.'s National Provider Identifier (NPI) is 1437347879, issued on Oct 10, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Januario Lee Natanauan, M.D. located?
The NPPES record lists a practice address at 1215 N Alpine RD, Rockford, IL, 61107. Phone: (815) 391-7800. Providers update this record themselves, so call before visiting.
How can I verify Januario Lee Natanauan, M.D.'s license?
NPPES lists Illinois license number 036122920, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Januario Lee Natanauan, M.D. prescribe under Medicare Part D?
In 2024, Januario Lee Natanauan, M.D. had 832 Medicare Part D claims for 556 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Januario Lee Natanauan, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.