Charles Edward Osborn, MD
Specialist · Santa Ana, CA
Charles Edward Osborn, MD is a specialist with a practice address in Santa Ana, California, and NPI 1619960077, issued on Aug 31, 2005. Check the license (California G33281, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Charles Edward Osborn
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- G33281 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1001 N Tustin Ave, Santa Ana, CA 92705
- Phone
- (714) 953-3515
- Enumerated
- Aug 31, 2005
- Record last updated
- Jul 20, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (714) 953-4529
- Medicaid ID
- 00G332811 CA
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 1001 N Tustin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Charles Edward Osborn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G33281Check 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 specialist in 2024
15 Medicare Part D claims, against an average of 1,380 among the 8,233 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.
Charles Edward Osborn among 5,749 specialist records in California
Charles Edward Osborn, MD is one of 5,749 specialist records with a practice address in California. 30% 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 · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Santa Ana → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Michael Brodsky, MDSanta Ana, CA 927051275538423
- Stephen Cohen, M.D.Santa Ana, CA 927051225031586
- Brian Cross, MDSanta Ana, CA 927051720072002
- William Davis, MDSanta Ana, CA 927051013909225
- Sanjay Deshmukh, M. D.Santa Ana, CA 927051487642377
- Donald Dinwoodie, M.D.Santa Ana, CA 927051114910825
- Bahram Eslami, M.D.Santa Ana, CA 927051033112313
- Mahmoud Eslami Farsani, MDSanta Ana, CA 927051487659637
Common questions
What is Charles Edward Osborn, MD's NPI number?
Charles Edward Osborn, MD's National Provider Identifier (NPI) is 1619960077, issued on Aug 31, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Charles Edward Osborn, MD located?
The NPPES record lists a practice address at 1001 N Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 953-3515. Providers update this record themselves, so call before visiting.
How can I verify Charles Edward Osborn, MD's license?
NPPES lists California license number G33281, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Charles Edward Osborn, MD prescribe under Medicare Part D?
In 2024, Charles Edward Osborn, MD had 15 Medicare Part D claims; the average among specialist prescribers was 1,380. 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.