Oscar Mangarero Sablan, MD
Internal Medicine Physician · Firebaugh, CA
Oscar Mangarero Sablan, MD is an internal medicine physician with a practice address in Firebaugh, California, and NPI 1710973060, issued on Sep 22, 2005. Check the license (California G45391, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Oscar Mangarero Sablan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- G45391 CA
Self-reported in NPPES; status is on the state search - Practice location
- 979 O St, Firebaugh, CA 93622
- Phone
- (559) 296-5080
- Enumerated
- Sep 22, 2005
- Record last updated
- Jan 13, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (559) 296-5011
- Medicaid ID
- RHM03903F CA
- Entity
- Type 1 · individual
Verify Oscar Mangarero Sablan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G45391Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average internal medicine physician in 2024
495 Medicare Part D claims for 56 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 25 claims were for opioids.
Most prescribed
- Losartan Potassium26 claims
- Amlodipine Besylate25 claims
- Jardiance24 claims
- Furosemide22 claims
- Hydrocodone-Acetaminophen22 claims
- Omeprazole21 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.
1 internal medicine physician records list a practice address in Firebaugh
They are 1 of the 25 NPPES records with a practice address in Firebaugh, and 17,696 internal medicine physician records in California.
Other internal medicine physician records in California
- Jacob Aaron, MDSan Francisco, CA1407202518
- Alistair Aaronson, MDStanford, CA1457628760
- Jose Abad., MDSacramento, CA1144607219
- Donna Abare, MDOakland, CA1386722155
- Marce AbareScotts Valley, CA1457744708
- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Oscar Mangarero Sablan, MD's NPI number?
Oscar Mangarero Sablan, MD's National Provider Identifier (NPI) is 1710973060, issued on Sep 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Oscar Mangarero Sablan, MD located?
The NPPES record lists a practice address at 979 O St, Firebaugh, CA, 93622. Phone: (559) 296-5080. Providers update this record themselves, so call before visiting.
How can I verify Oscar Mangarero Sablan, MD's license?
NPPES lists California license number G45391, 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 Oscar Mangarero Sablan, MD prescribe under Medicare Part D?
In 2024, Oscar Mangarero Sablan, MD had 495 Medicare Part D claims for 56 beneficiaries; 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.