Karl Greer, MD - Medicare Family Practice in Rohnert Park, CA

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Karl Greer, MD is a medicare enrolled "Family Medicine" physician in Rohnert Park, California. He went to University Of Texas Medical Branch At Galveston and graduated in 2012 and has 12 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Sutter Bay Medical Foundation, Providence Medical Foundation, Petaluma Health Center Inc and his current practice location is 5900 State Farm Dr Fl 2, Rohnert Park, California. You can reach out to his office (for appointments etc.) via phone at (707) 559-7600.

Karl Greer is licensed to practice in California (license number A127109) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1396010740.

Contact Information

Karl Greer, MD
5900 State Farm Dr Fl 2,
Rohnert Park, CA 94928-2149
(707) 559-7600
(707) 559-7620

Map and Direction




Physician's Profile

Full NameKarl Greer
GenderMale
SpecialityFamily Practice
Experience12 Years
Location5900 State Farm Dr Fl 2, Rohnert Park, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Karl Greer attended and graduated from University Of Texas Medical Branch At Galveston in 2012
  NPI Data:
  • NPI Number: 1396010740
  • Provider Enumeration Date: 03/19/2012
  • Last Update Date: 02/01/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 8820308588
  • Enrollment ID: I20151109000961

Medical Identifiers

Medical identifiers for Karl Greer such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1396010740NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207Q00000XFamily Medicine A127109 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Sutter Santa Rosa Regional HospitalSanta rosa, CAHospital
Petaluma Valley HospitalPetaluma, CAHospital
Santa Rosa Memorial HospitalSanta rosa, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Sutter Bay Medical Foundation42845387782995
Providence Medical Foundation89219932051312
Petaluma Health Center Inc913318037558

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. Karl Greer allows following entities to bill medicare on his behalf.
Entity NameSutter Bay Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1013950807
PECOS PAC ID: 4284538778
Enrollment ID: O20031125000909
Entity NameProvidence Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1285890624
PECOS PAC ID: 8921993205
Enrollment ID: O20040216001346
Entity NamePetaluma Health Center Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1588656268
PECOS PAC ID: 9133180375
Enrollment ID: O20050315000415

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. Karl Greer 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
Karl Greer, MD
5900 State Farm Dr Fl 2,
Rohnert Park, CA 94928-2149

Ph: (707) 559-7600		Karl Greer, MD
5900 State Farm Dr Fl 2,
Rohnert Park, CA 94928-2149

Ph: (707) 559-7600

Reviews and Comments


Family Medicine Doctors in Rohnert Park, CA

Michael D. Maggioncalda, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 5900 State Farm Dr, Rohnert Park, CA 94928
Phone: 707-206-3000    
Ashmi Ullal,
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 5900 State Farm Dr, Rohnert Park, CA 94928
Phone: 707-577-7500    
Dr. Scott Dean Cutler, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1801 E. Cotati Avenue, Rohnert Park, CA 95404
Phone: 707-664-2921    Fax: 707-664-2925
Vanessa Elizabeth Ramirez, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 5900 State Farm Dr Fl 2, Rohnert Park, CA 94928
Phone: 707-559-7500    
Dr. Mary Elizabeth Frank, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 1450 Medical Center Dr, Suite 3, Rohnert Park, CA 94928
Phone: 707-584-8588    Fax: 707-584-2869
Danielle Smith, DO
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 5900 State Farm Dr, Rohnert Park, CA 94928
Phone: 707-206-3044    
Dr. Andrew Ira Schwartz, D.O.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 5300 Snyder Ln, Rohnert Park, CA 94928
Phone: 707-585-8347    Fax: 707-573-5424

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.