Tommy Tiong Hien Oei, MD - Medicare Internal Medicine in Fontana, CA

Tommy Tiong Hien Oei, MD is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Fontana, California. He went to New York University School Of Medicine and graduated in 1997 and has 27 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Southern California Permanente Medical Group and his current practice location is 9961 Sierra Ave, Fontana, California. You can reach out to his office (for appointments etc.) via phone at (909) 427-3910.

Tommy Tiong Hien Oei is licensed to practice in California (license number A66717) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1033286844.

Contact Information

Tommy Tiong Hien Oei, MD
9961 Sierra Ave,
Fontana, CA 92335-6720
(909) 427-3910
Not Available



Physician's Profile

Full NameTommy Tiong Hien Oei
GenderMale
SpecialityInternal Medicine
Experience27 Years
Location9961 Sierra Ave, Fontana, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Tommy Tiong Hien Oei attended and graduated from New York University School Of Medicine in 1997
  NPI Data:
  • NPI Number: 1033286844
  • Provider Enumeration Date: 11/29/2006
  • Last Update Date: 12/01/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 9234102047
  • Enrollment ID: I20040818000948

Medical Identifiers

Medical identifiers for Tommy Tiong Hien Oei such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1033286844NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology A66717 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Kaiser Foundation Hospital Fontana/ontarioFontana, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Southern California Permanente Medical Group60027291757951

News Archive

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Comparable indicators on long-term care

Even before the current financial crisis, there was a growing concern over the fiscal and social sustainability of long-term care for dependent older people. Yet despite these concerns, little is known about basic indicators on this subject. The present publication, "Facts and Figures on Long-term Care - Europe and North America" seeks to bridge that gap of information by bringing together information from international and national sources to present comparable indicators on long-term care.

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› Verified 1 days ago

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Tommy Tiong Hien Oei allows following entities to bill medicare on his behalf.
Entity NameSouthern California Permanente Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316979834
PECOS PAC ID: 6002729175
Enrollment ID: O20040126000823

News Archive

New findings could help develop therapeutic options for glycogen storage disease

Glycogen storage disorders, which affect the body's ability to process sugar and store energy, are rare metabolic conditions that frequently manifest in the first years of life. Often accompanied by liver and muscle disease, this inability to process and store glucose can have many different causes, and can be difficult to diagnose.

Astellas enters into agreement with Medivation to develop MDV3100

Astellas Pharma Inc. ("Astellas") and Medivation, Inc. announced today that they have entered into a global agreement to develop and commercialize MDV3100, Medivation's investigational drug for the treatment of prostate cancer.

Comparable indicators on long-term care

Even before the current financial crisis, there was a growing concern over the fiscal and social sustainability of long-term care for dependent older people. Yet despite these concerns, little is known about basic indicators on this subject. The present publication, "Facts and Figures on Long-term Care - Europe and North America" seeks to bridge that gap of information by bringing together information from international and national sources to present comparable indicators on long-term care.

Experimental compound prevents cholesterol gallstone disease

A promising experimental compound prevents cholesterol gallstone disease in mice by stimulating the biochemical pathway that controls bile acid secretion by the liver, according to new studies by Howard Hughes Medical Institute researchers.

Read more Medical News

› Verified 1 days ago

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Tommy Tiong Hien Oei is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Tommy Tiong Hien Oei, MD
9961 Sierra Ave,
Fontana, CA 92335-6720

Ph: (909) 427-3910
Tommy Tiong Hien Oei, MD
9961 Sierra Ave,
Fontana, CA 92335-6720

Ph: (909) 427-3910

News Archive

New findings could help develop therapeutic options for glycogen storage disease

Glycogen storage disorders, which affect the body's ability to process sugar and store energy, are rare metabolic conditions that frequently manifest in the first years of life. Often accompanied by liver and muscle disease, this inability to process and store glucose can have many different causes, and can be difficult to diagnose.

Astellas enters into agreement with Medivation to develop MDV3100

Astellas Pharma Inc. ("Astellas") and Medivation, Inc. announced today that they have entered into a global agreement to develop and commercialize MDV3100, Medivation's investigational drug for the treatment of prostate cancer.

Comparable indicators on long-term care

Even before the current financial crisis, there was a growing concern over the fiscal and social sustainability of long-term care for dependent older people. Yet despite these concerns, little is known about basic indicators on this subject. The present publication, "Facts and Figures on Long-term Care - Europe and North America" seeks to bridge that gap of information by bringing together information from international and national sources to present comparable indicators on long-term care.

Experimental compound prevents cholesterol gallstone disease

A promising experimental compound prevents cholesterol gallstone disease in mice by stimulating the biochemical pathway that controls bile acid secretion by the liver, according to new studies by Howard Hughes Medical Institute researchers.

Read more News

› Verified 1 days ago


Internal Medicine Doctors in Fontana, CA

Nainesh K. Gandhi, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 9985 Sierra Ave, Fontana, CA 92335
Phone: 866-454-3485    
Blanca E. Viramontes, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Dr. Paymon Mesgarzadeh, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 9985 Sierra Ave, Fontana, CA 92335
Phone: 909-427-5000    
Kathryn Chang Lin, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 16465 Sierra Lakes Pkwy, Ste 245, Fontana, CA 92336
Phone: 909-829-7337    Fax: 909-829-1218
Lih-jiau Chen, MD
Gastroenterology
Medicare: Medicare Enrolled
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    
Edmond C. Hui, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 9961 Sierra Ave, Fontana, CA 92335
Phone: 909-427-3910    

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