Dr John K Lok, MD - Medicare Internal Medicine in Fountain Valley, CA

Dr John K Lok, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in Fountain Valley, California. His current practice location is 11160 Warner Ave, Suite 323, Fountain Valley, California. You can reach out to his office (for appointments etc.) via phone at (714) 751-7002.

Dr John K Lok is licensed to practice in California (license number G39849) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1992713028.

Contact Information

Dr John K Lok, MD
11160 Warner Ave, Suite 323,
Fountain Valley, CA 92708-4008
(714) 751-7002
(714) 751-9340

Map and Direction




Physician's Profile

Full NameDr John K Lok
GenderMale
SpecialityInternal Medicine - Infectious Disease
Location11160 Warner Ave, Fountain Valley, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1992713028
  • Provider Enumeration Date: 08/04/2006
  • Last Update Date: 07/08/2007
  Medicare PECOS Information:
  • PECOS PAC ID: 7113115221
  • Enrollment ID: I20101215001227

Medical Identifiers

Medical identifiers for Dr John K Lok such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1992713028NPI-NPPES
00G398490MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease G39849 (California)Primary

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. Dr John K Lok 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
Dr John K Lok, MD
11160 Warner Ave, Suite 323,
Fountain Valley, CA 92708-4008

Ph: (714) 751-7002
Dr John K Lok, MD
11160 Warner Ave, Suite 323,
Fountain Valley, CA 92708-4008

Ph: (714) 751-7002

Reviews and Comments


Internal Medicine Doctors in Fountain Valley, CA

Dr. Kristine Suzanne Olson Arthur, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 11420 Warner Ave, Fountain Valley, CA 92708
Phone: 714-549-1300    Fax: 714-433-3100
Dr. Sajeet Singh Sawhney, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 11100 Warner Ave, Suite 218, Fountain Valley, CA 92708
Phone: 714-641-9696    Fax: 714-641-9696
Dr. Jennifer L Wong, M.D.
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 18111 Brookhurst St Ste 5100, Fountain Valley, CA 92708
Phone: 714-546-2238    Fax: 714-434-8145
Dr. Sithu Lin, M.D.
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 11100 Warner Ave Ste 218, Fountain Valley, CA 92708
Phone: 714-641-9696    
Kien-an Duong, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 11420 Warner Ave, Fountain Valley, CA 92708
Phone: 714-549-1300    Fax: 714-433-3100
Mr. Satinder Swaroop, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 11180 Warner Ave, Suite #353, Fountain Valley, CA 92708
Phone: 714-751-3540    Fax: 714-751-5626
Yu-ming Ni, MD
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 18111 Brookhurst St Ste 5100, Fountain Valley, CA 92708
Phone: 714-546-2238    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

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