Cathi Lee Nanninga, MD
Hospitalist Physician · Los Angeles, CA
Cathi Lee Nanninga, MD is a hospitalist physician with a practice address in Los Angeles, California, and NPI 1497744023, issued on Oct 17, 2005. Check the license (California G045964, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cathi Lee Nanninga
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- G045964 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4727 Wilshire Blvd, Los Angeles, CA 90010
- Phone
- (323) 938-2942
- Enumerated
- Oct 17, 2005
- Record last updated
- Nov 1, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (323) 938-8952
- Medicaid ID
- 00G0459640 CA
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 4727 Wilshire Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Theodore Friedman, MDEndocrinology, Diabetes & Metabolism Physician1972669125
Verify Cathi Lee Nanninga in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G045964Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hospitalist physician in 2024
17 Medicare Part D claims, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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.
Cathi Lee Nanninga among 3,099 hospitalist physician records in California
Cathi Lee Nanninga, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileNo · 81% of these records are
- Record last updated2017 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Los Angeles → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Kang Wook Huh, DOLos Angeles, CA 900121417586918
- Mushtaq Khan, M.D.Los Angeles, CA 900151407920333
- Andrius Kirsonis, MDLos Angeles, CA 900151841266046
- Bhisit Changcharoen, M.D.Los Angeles, CA 900171538422217
- Ethan Lin, MDLos Angeles, CA 900171255871711
- Maya Mathew, M.D.Los Angeles, CA 900171659548204
- Megana BallalLos Angeles, CA 900241174900021
- Pooya Banankhah, M.D.Los Angeles, CA 900241720468580
Common questions
What is Cathi Lee Nanninga, MD's NPI number?
Cathi Lee Nanninga, MD's National Provider Identifier (NPI) is 1497744023, issued on Oct 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Cathi Lee Nanninga, MD located?
The NPPES record lists a practice address at 4727 Wilshire Blvd, Los Angeles, CA, 90010. Phone: (323) 938-2942. Providers update this record themselves, so call before visiting.
How can I verify Cathi Lee Nanninga, MD's license?
NPPES lists California license number G045964, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Cathi Lee Nanninga, MD prescribe under Medicare Part D?
In 2024, Cathi Lee Nanninga, MD had 17 Medicare Part D claims; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.