Umber Chohan, M.D.
Infectious Disease Physician · Fontana, CA
Umber Chohan, M.D. is an infectious disease physician with a practice address in Fontana, California, and NPI 1942452776, issued on Oct 10, 2008. Check the license (California A93351, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Umber Chohan
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- A93351 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-5000
- Enumerated
- Oct 10, 2008
- Record last updated
- Dec 1, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090107000270); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 1,119 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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- Michael Adair, MDFamily Medicine Physician1780732651
- Berneva Adams, MDObstetrics & Gynecology Physician1376602987
Verify Umber Chohan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A93351Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 60% of the cost of the top drugs
1,967 Medicare Part D claims for 561 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Atorvastatin Calcium136 claims
- Atovaquone-Proguanil Hcl136 claims
- Ipol120 claims
- Havrix119 claims
- Tamsulosin Hcl66 claims
- Typhim Vi53 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 GroupWoodland Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Umber Chohan among 1,119 infectious disease physician records in California
Umber Chohan, M.D. is one of 1,119 infectious disease physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 59% of them.
- NPI issued2008 · 59% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2000 · median 2003 among the 735 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 207RI0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in California
There are 1,119 infectious disease physician records in California.
All 1,119 in California → Every provider in Fontana → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Jea Lee, MDFontana, CA 923351477624443
- Richard Morrissey, MDFontana, CA 923351720148927
- Kuo-Liang Huang, M.D.Colton, CA 923241588746010
- Brianna Ray, D.O., M.P.H.Colton, CA 923241477915932
- Zayn Endo, MDLoma Linda, CA 923501568020592
- Kelsey Luna, MDLoma Linda, CA 923501497336291
- Jonathan Pham, MDLoma Linda, CA 923501750811659
- Jonathan Arcobello, M.D.Loma Linda, CA 923541396131983
Common questions
What is Umber Chohan, M.D.'s NPI number?
Umber Chohan, M.D.'s National Provider Identifier (NPI) is 1942452776, issued on Oct 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Umber Chohan, M.D. located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-5000. Providers update this record themselves, so call before visiting.
How can I verify Umber Chohan, M.D.'s license?
NPPES lists California license number A93351, 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 Umber Chohan, M.D. prescribe under Medicare Part D?
In 2024, Umber Chohan, M.D. had 1,967 Medicare Part D claims for 561 beneficiaries; the average among infectious disease physician prescribers was 689. 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.