Nikom Udomphonkul, MD
Internal Medicine Physician · Gridley, CA
Nikom Udomphonkul, MD is an internal medicine physician with a practice address in Gridley, California, and NPI 1598849192, issued on Oct 24, 2006. Check the license (California A34194, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Nikom Udomphonkul
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A34194 CA
Self-reported in NPPES; status is on the state search - Practice location
- 284 Spruce St, Gridley, CA 95948
- Phone
- (530) 846-9035
- Enumerated
- Oct 24, 2006
- Record last updated
- Feb 23, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (530) 846-9075
- Medicaid ID
- 00A34194 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 284 Spruce St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Devine, FNPFamily Nurse Practitioner1548627516
- Milton DhasOccupational Therapist1588176879
- Caitlin Dunckel, FNPFamily Nurse Practitioner1790667780
- Gabrielle TurcottePhysical Therapist1215536651
Verify Nikom Udomphonkul in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A34194Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
42 Medicare Part D claims, against an average of 3,176 among the 108,855 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.
Nikom Udomphonkul among 17,696 internal medicine physician records in California
Nikom Udomphonkul, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2016 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 internal medicine physician records list a practice address in Gridley
They are 3 of the 132 NPPES records with a practice address in Gridley, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Gridley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Satvir Dhillon, MDGridley, CA 959481326544586
- Ramon Perez-Egana Monge, M.D.Gridley, CA 959481720297906
- Walter Miller, MDGrass Valley, CA 959491013985340
- Michelle-Linh Nguyen, MDGrass Valley, CA 959491114447596
- Elisabeth Lernhardt, MDPenn Valley, CA 959461902879885
- Elizabeth Wobus, MDPenn Valley, CA 959461770673493
- Nancy Bleile, MDGrass Valley, CA 959451144246158
- Simon Chan, M.D.Grass Valley, CA 959451063431179
Common questions
What is Nikom Udomphonkul, MD's NPI number?
Nikom Udomphonkul, MD's National Provider Identifier (NPI) is 1598849192, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nikom Udomphonkul, MD located?
The NPPES record lists a practice address at 284 Spruce St, Gridley, CA, 95948. Phone: (530) 846-9035. Providers update this record themselves, so call before visiting.
How can I verify Nikom Udomphonkul, MD's license?
NPPES lists California license number A34194, 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 Nikom Udomphonkul, MD prescribe under Medicare Part D?
In 2024, Nikom Udomphonkul, MD had 42 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.