Andrew Dam, DO - Medicare Internal Medicine in Pomona, CA

Andrew Dam, DO is a medicare enrolled "Internal Medicine - Gastroenterology" physician in Pomona, California. His current practice location is 250 W Bonita Ave Ste 250, Pomona, California. You can reach out to his office (for appointments etc.) via phone at (909) 655-0300.

Andrew Dam is licensed to practice in California (license number 20A23524) 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 1225590037.

Contact Information

Andrew Dam, DO
250 W Bonita Ave Ste 250,
Pomona, CA 91767-1864
(909) 655-0300
Not Available

Map and Direction




Physician's Profile

Full NameAndrew Dam
GenderMale
SpecialityInternal Medicine - Gastroenterology
Location250 W Bonita Ave Ste 250, Pomona, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1225590037
  • Provider Enumeration Date: 04/01/2019
  • Last Update Date: 08/04/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 1850776840
  • Enrollment ID: I20220912001475

Medical Identifiers

Medical identifiers for Andrew Dam such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1225590037NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RG0100XInternal Medicine - Gastroenterology 20A23524 (California)Primary

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. Andrew Dam allows following entities to bill medicare on his behalf.
Entity NameSignify Health Medical Associates Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1750845863
PECOS PAC ID: 2163764424
Enrollment ID: O20191209002247

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. Andrew Dam 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
Andrew Dam, DO
250 W Bonita Ave Ste 250,
Pomona, CA 91767-1864

Ph: (909) 655-0300
Andrew Dam, DO
250 W Bonita Ave Ste 250,
Pomona, CA 91767-1864

Ph: (909) 655-0300

Reviews and Comments


Internal Medicine Doctors in Pomona, CA

Kenneth Spiers Brown, MD
Gastroenterology
Medicare: Not Enrolled in Medicare
Practice Location: 1866 N Orange Grove Ave, Ste 102, Pomona, CA 91767
Phone: 909-620-4373    Fax: 909-620-7179
Lisa Carrie Butler,
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 790 East Bonita Ave, 2nd Floor, Pomona, CA 91767
Phone: 909-447-8585    Fax: 909-447-8593
Dr. Kerry Norman Gott, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 255 E Bonita Ave, Pomona, CA 91767
Phone: 909-596-7733    Fax: 909-450-0357
Dr. Monica A Wong, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 750 S Park Ave, Pomona, CA 91766
Phone: 909-868-0235    Fax: 909-623-0571
Ossama Maloule, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 255 E Bonita Ave Bldg 1b, Pomona, CA 91767
Phone: 909-275-7470    Fax: 909-971-4532
Rita Patrick, M.D.
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1880 N Orange Grove Ave, Pomona, CA 91767
Phone: 909-630-7158    
Nadir Ali Eltahir, MD
Gastroenterology
Medicare: Accepting Medicare Assignments
Practice Location: 1940 N Orange Grove Ave, Pomona, CA 91767
Phone: 909-865-6900    Fax: 909-865-6300

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).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.