Dr Gregory P Melcher, MD - Medicare Internal Medicine in San Francisco, CA

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Dr Gregory P Melcher, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in San Francisco, California. His current practice location is 518a Castro St, San Francisco, California. You can reach out to his office (for appointments etc.) via phone at (415) 552-2814.

Dr Gregory P Melcher is licensed to practice in California (license number 00G869540) 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 1508846387.

Contact Information

Dr Gregory P Melcher, MD
518a Castro St,
San Francisco, CA 94114-2512
(415) 552-2814
(415) 552-2909

Map and Direction




Physician's Profile

Full NameDr Gregory P Melcher
GenderMale
SpecialityInternal Medicine - Infectious Disease
Location518a Castro St, San Francisco, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1508846387
  • Provider Enumeration Date: 01/18/2006
  • Last Update Date: 07/05/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 6901901347
  • Enrollment ID: I20070413000379

Medical Identifiers

Medical identifiers for Dr Gregory P Melcher such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1508846387NPI-NPPES
00G869540OtherCAMEDI-CAL

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease 00G869540 (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. Dr Gregory P Melcher allows following entities to bill medicare on his behalf.
Entity NameUniversity Of California Sfgh Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1154396208
PECOS PAC ID: 5496668410
Enrollment ID: O20031113000632
Entity NameUniversity Of California Sfgh Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1326013442
PECOS PAC ID: 5496668410
Enrollment ID: O20040630000226
Entity NameCity & County Of San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1982737524
PECOS PAC ID: 1658280748
Enrollment ID: O20050309000770
Entity NameUniversity Of California Sfgh Medical Group
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1366417933
PECOS PAC ID: 5496668410
Enrollment ID: O20050401000123
Entity NameCares Community Health
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1447297379
PECOS PAC ID: 2769418151
Enrollment ID: O20050718000377

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 Gregory P Melcher 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 Gregory P Melcher, MD
Po Box 743749,
Los Angeles, CA 90074-3749

Ph: () -		Dr Gregory P Melcher, MD
518a Castro St,
San Francisco, CA 94114-2512

Ph: (415) 552-2814

Reviews and Comments


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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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