Thet Naing Oo, MD
Geriatric Medicine (Internal Medicine) Physician · Colton, CA
Thet Naing Oo, MD is a geriatric medicine (internal medicine) physician with a practice address in Colton, California, and NPI 1538152095, issued on Aug 30, 2005. Check the license (California A71774, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thet Naing Oo
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- A71774 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 N Pepper Ave, Colton, CA 92324
- Phone
- (909) 580-1675
- Enumerated
- Aug 30, 2005
- Record last updated
- Nov 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 532 in California → Look up another NPI →
Also registered at 400 N Pepper Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shangrila AbaricoRegistered Nurse1609659325
- Susana AbaroRegistered Nurse1114425162
- Patricia AbbaRegistered Nurse1013188838
- Mohammad Hossein Abbasi, MD, MPHStudent in an Organized Health Care Education/Training Program1609622166
- Ala AbedrabboCertified Registered Nurse Anesthetist1972333144
- Mary AboagyeLicensed Vocational Nurse1982875605
Verify Thet Naing Oo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A71774Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
3,930 Medicare Part D claims for 143 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 51 claims were for opioids.
Most prescribed
- Atorvastatin Calcium271 claims
- Levothyroxine Sodium211 claims
- Humulin R137 claims
- Furosemide129 claims
- Lisinopril106 claims
- Gabapentin103 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.
Thet Naing Oo among 532 geriatric medicine (internal medicine) physician records in California
Thet Naing Oo, MD is one of 532 geriatric medicine (internal medicine) physician records with a practice address in California. 77% 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, 93% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in California
There are 532 geriatric medicine (internal medicine) physician records in California.
All 532 in California → Every provider in Colton → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Kumari Jayawardena, MDFontana, CA 923351255388385
- Mohan Mallam, M.D.Barstow, CA 923111538161443
- Wahid Midou, M.D.Apple Valley, CA 923081275563967
- Radha Menon, M.D.Apple Valley, CA 923071033104724
- Katalin Danji, M.D.Loma Linda, CA 923541750504080
- James Larsen, M.D.Loma Linda, CA 923541760403547
- Cesar Libanati, M.D.Loma Linda, CA 923541962563338
- Vishvanath Date, M.D.Loma Linda, CA 923571851482541
Common questions
What is Thet Naing Oo, MD's NPI number?
Thet Naing Oo, MD's National Provider Identifier (NPI) is 1538152095, issued on Aug 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Thet Naing Oo, MD located?
The NPPES record lists a practice address at 400 N Pepper Ave, Colton, CA, 92324. Phone: (909) 580-1675. Providers update this record themselves, so call before visiting.
How can I verify Thet Naing Oo, MD's license?
NPPES lists California license number A71774, 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 Thet Naing Oo, MD prescribe under Medicare Part D?
In 2024, Thet Naing Oo, MD had 3,930 Medicare Part D claims for 143 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.