Samir D. Johna, MD
Surgery Physician · Fontana, CA
Samir D. Johna, MD is a surgery physician with a practice address in Fontana, California, and NPI 1063571628, issued on Dec 8, 2006. Check the license (California A52638, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Samir D. Johna
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- A52638 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-3910
- Enumerated
- Dec 8, 2006
- Record last updated
- Dec 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20081121000142); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Berneva Adams, MDObstetrics & Gynecology Physician1376602987
Verify Samir D. Johna in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A52638Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average surgery physician in 2024
96 Medicare Part D claims for 41 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Gabapentin30 claims
- Meloxicam23 claims
- Hydrocodone-Acetaminophen18 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupRedlands, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Samir D. Johna among 3,118 surgery physician records in California
Samir D. Johna, MD is one of 3,118 surgery physician records with a practice address in California. 75% 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, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated1983 · median 2003 among the 1,901 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Fontana → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Lori Chow, MDFontana, CA 923351437220464
- Siu-Keung Chung, M.D.Fontana, CA 923351295797751
- Clifford Eke, MDFontana, CA 923351366501959
- Lawrence Harms, MDFontana, CA 923351821146739
- Taylor Ho, MDFontana, CA 923351003988585
- Daniel Klaristenfeld, MDFontana, CA 923351780732701
- Jane Ong, MDFontana, CA 923351538236351
- Chun Rhim, MDFontana, CA 923351750406252
Common questions
What is Samir D. Johna, MD's NPI number?
Samir D. Johna, MD's National Provider Identifier (NPI) is 1063571628, issued on Dec 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Samir D. Johna, MD located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-3910. Providers update this record themselves, so call before visiting.
How can I verify Samir D. Johna, MD's license?
NPPES lists California license number A52638, 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 Samir D. Johna, MD prescribe under Medicare Part D?
In 2024, Samir D. Johna, MD had 96 Medicare Part D claims for 41 beneficiaries; the average among surgery physician prescribers was 147. 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.