Dr Catherine Koss, MD - Medicare Internal Medicine in San Francisco, CA

Dr Catherine Koss, MD is a medicare enrolled "Internal Medicine - Infectious Disease" physician in San Francisco, California. Her current practice location is Ucsf Department Of Medicine, 505 Parnassus Avenue, San Francisco, California. You can reach out to her office (for appointments etc.) via phone at (415) 476-1528.

Dr Catherine Koss is licensed to practice in California (license number A115493) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1861727950.

Contact Information

Dr Catherine Koss, MD
Ucsf Department Of Medicine, 505 Parnassus Avenue,
San Francisco, CA 94143-0001
(415) 476-1528
Not Available

Map and Direction




Physician's Profile

Full NameDr Catherine Koss
GenderFemale
SpecialityInternal Medicine - Infectious Disease
LocationUcsf Department Of Medicine, 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: 1861727950
  • Provider Enumeration Date: 10/08/2009
  • Last Update Date: 05/06/2019
  Medicare PECOS Information:
  • PECOS PAC ID: 7315162195
  • Enrollment ID: I20140710002568

Medical Identifiers

Medical identifiers for Dr Catherine Koss such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1861727950NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RI0200XInternal Medicine - Infectious Disease A115493 (California)Primary
390200000XStudent In An Organized Health Care Education/training Program (* (Not Available))Secondary

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 Catherine Koss allows following entities to bill medicare on her behalf.
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

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 Catherine Koss 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 Catherine Koss, MD
Ucsf Department Of Medicine, 505 Parnassus Avenue,
San Francisco, CA 94143-0001

Ph: () -
Dr Catherine Koss, MD
Ucsf Department Of Medicine, 505 Parnassus Avenue,
San Francisco, CA 94143-0001

Ph: (415) 476-1528

Reviews and Comments


Internal Medicine Doctors in San Francisco, CA

Dr. Shannon Walker,
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 112 Parnassus Ave Apt 4, San Francisco, CA 94117
Phone: 571-271-8343    
Dr. Pratyusha Kishore Narra, MBBS
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 3490 California St, San Francisco, CA 94118
Phone: 415-514-6200    Fax: 415-514-6410
Dr. Chelsea Joy Thomsen, M.D., M.S.P.H
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 2 W Portal Ave, San Francisco, CA 94127
Phone: 415-291-0480    
Christine Soran,
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 1001 Potrero Ave, Bldg 10, 3rd Floor, Ward 13, Ucsf Division Of General Internal Medicine Sfgh, San Francisco, CA 94110
Phone: 415-206-5164    Fax: 415-206-5586
Stephen Norris Cohen, MD
Infectious Disease
Medicare: Not Enrolled in Medicare
Practice Location: 40 Ventura Ave, San Francisco, CA 94116
Phone: 415-681-2171    Fax: 415-681-2171
Mauricio Jalife Bucay, M.D
Infectious Disease
Medicare: Accepting Medicare Assignments
Practice Location: 505 Parnassus Ave, San Francisco, CA 94143
Phone: 415-750-4994    Fax: 415-750-8156
Dr. Adriana A.t. Martin, M.D., PH.D.
Infectious Disease
Medicare: Medicare Enrolled
Practice Location: 505 Parnassus Ave, San Francisco, CA 94143
Phone: 415-514-7288    

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.

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