Long Thao, M.D.
Family Medicine Physician · Merced, CA
Long Thao, M.D. is a family medicine physician with a practice address in Merced, California, and NPI 1245341445, issued on Aug 31, 2006. Check the license (California G66867, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Long Thao
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G66867 CA
Self-reported in NPPES; status is on the state search - Practice location
- 700 W Olive Ave, Merced, CA 95348
- Phone
- (209) 384-8426
- Enumerated
- Aug 31, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (209) 384-8015
- Medicaid ID
- 00G668670 CA
- Medicare enrollment
- Enrolled (PECOS I20101027000071); accepts Medicare assignment
- Medical or professional school
- Southern Illinois University School Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 700 W Olive Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Long Thao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average family medicine physician in 2024
2,253 Medicare Part D claims for 201 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 13 claims were for opioids.
Most prescribed
- Atorvastatin Calcium272 claims
- Amlodipine Besylate207 claims
- Jardiance93 claims
- Metformin Hcl93 claims
- Gabapentin89 claims
- Losartan Potassium64 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.
Industry payments in 2024: $177.73
4 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Long Thao among 17,133 family medicine physician records in California
Long Thao, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1988 · median 2005 among the 10,652 with a school on file
- Record last updated2007 · 58% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
94 family medicine physician records list a practice address in Merced
They are 94 of the 2,836 NPPES records with a practice address in Merced, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Merced → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Brandon Boggs, MDMerced, CA 953481386655520
- Douglas Eck, MDMerced, CA 953481144323189
- Roger Fife, M.D.Merced, CA 953481548207590
- Eugenia Garcia, M.D.Merced, CA 953481265483622
- Charlie Kano, MDMerced, CA 953481003927567
- Daniel Leong, MDMerced, CA 953481518119510
- Grant Medefind, M.D.Merced, CA 953481437366069
- Dirk Mous, MDMerced, CA 953481538262522
Common questions
What is Long Thao, M.D.'s NPI number?
Long Thao, M.D.'s National Provider Identifier (NPI) is 1245341445, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Long Thao, M.D. located?
The NPPES record lists a practice address at 700 W Olive Ave, Merced, CA, 95348. Phone: (209) 384-8426. Providers update this record themselves, so call before visiting.
How can I verify Long Thao, M.D.'s license?
NPPES lists California license number G66867, 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 Long Thao, M.D. prescribe under Medicare Part D?
In 2024, Long Thao, M.D. had 2,253 Medicare Part D claims for 201 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.