Dr Karin Gaensler, MD - Medicare Hematology/oncology in San Francisco, CA

Dr Karin Gaensler, MD is a medicare enrolled "Internal Medicine - Hematology" physician in San Francisco, California. She graduated from medical school in 1981 and has 43 years of diverse experience with area of expertise as Hematology/oncology. She is a member of the group practice Ucsf Medical Group Business Services, Regents Of The University Of California, University Of California San Francisco and her current practice location is 400 Parnassus Ave, San Francisco, California. You can reach out to her office (for appointments etc.) via phone at (415) 353-2421.

Dr Karin Gaensler is licensed to practice in California (license number G50093) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1609830215.

Contact Information

Dr Karin Gaensler, MD
400 Parnassus Ave,
San Francisco, CA 94143-2202
(415) 353-2421
(415) 353-2467

Map and Direction




Physician's Profile

Full NameDr Karin Gaensler
GenderFemale
SpecialityHematology/oncology
Experience43 Years
Location400 Parnassus Ave, San Francisco, California
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Karin Gaensler graduated from medical school in 1981
  NPI Data:
  • NPI Number: 1609830215
  • Provider Enumeration Date: 04/12/2006
  • Last Update Date: 09/22/2016
  Medicare PECOS Information:
  • PECOS PAC ID: 6800970211
  • Enrollment ID: I20080225000218

Medical Identifiers

Medical identifiers for Dr Karin Gaensler such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1609830215NPI-NPPES
0G5009300MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine G50093 (California)Secondary
207RH0000XInternal Medicine - Hematology G50093 (California)Primary
207RX0202XInternal Medicine - Medical Oncology G50093 (California)Secondary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Ucsf Medical CenterSan francisco, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ucsf Medical Group Business Services37794978701092
Regents Of The University Of California4284547274581
University Of California San Francisco44865672291306

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 Karin Gaensler allows following entities to bill medicare on her behalf.
Entity NameRegents Of The University Of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881763597
PECOS PAC ID: 4284547274
Enrollment ID: O20031106000389
Entity NameUniversity Of California San Francisco
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1861578973
PECOS PAC ID: 4486567229
Enrollment ID: O20031212000897
Entity NameUcsf Medical Group Business Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1477624104
PECOS PAC ID: 3779497870
Enrollment ID: O20040622001513

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 Karin Gaensler 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 Karin Gaensler, MD
1635 Divisadero Street, Suite 625, Box 1821,
San Francisco, CA 94143-0001

Ph: (415) 476-4029
Dr Karin Gaensler, MD
400 Parnassus Ave,
San Francisco, CA 94143-2202

Ph: (415) 353-2421

Reviews and Comments


Internal Medicine Doctors in San Francisco, CA

Dr. Shannon Walker,
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Phone: 571-271-8343    
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Phone: 415-514-6200    Fax: 415-514-6410
Dr. Chelsea Joy Thomsen, M.D., M.S.P.H
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Christine Soran,
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Phone: 415-206-5164    Fax: 415-206-5586
Stephen Norris Cohen, MD
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Phone: 415-681-2171    Fax: 415-681-2171
Mauricio Jalife Bucay, M.D
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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.
Internal Medicine
Medicare: Medicare Enrolled
Practice Location: 505 Parnassus Ave, San Francisco, CA 94143
Phone: 415-514-7288    

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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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