Karen Merzenich, CNM, WHNP - Medicare Advanced Practice Midwife in Napa, CA

Karen Merzenich, CNM, WHNP is a medicare enrolled "Advanced Practice Midwife" in Napa, California. Her current practice location is 300 Hartle Ct, Napa, California. You can reach out to her office (for appointments etc.) via phone at (707) 254-1775.

Karen Merzenich is licensed to practice in California (license number 236203) 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 1003586363.

Contact Information

Karen Merzenich, CNM, WHNP
300 Hartle Ct,
Napa, CA 94559-4078
(707) 254-1775
Not Available

Map and Direction




Provider's Profile

Full NameKaren Merzenich
GenderFemale
SpecialityAdvanced Practice Midwife
Location300 Hartle Ct, Napa, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1003586363
  • Provider Enumeration Date: 09/17/2021
  • Last Update Date: 09/17/2021
  Medicare PECOS Information:
  • PECOS PAC ID: 7012315245
  • Enrollment ID: I20211001001565

Medical Identifiers

Medical identifiers for Karen Merzenich such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003586363NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
163W00000XRegistered Nurse 95174102 (California)Secondary
363LW0102XNurse Practitioner - Women's Health 95018166 (California)Secondary
367A00000XAdvanced Practice Midwife 236203 (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. Karen Merzenich allows following entities to bill medicare on her behalf.
Entity NameOle Health
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700976503
PECOS PAC ID: 7315934767
Enrollment ID: O20040427001735

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. Karen Merzenich 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
Karen Merzenich, CNM, WHNP
2910 Lake St,
San Francisco, CA 94121-1022

Ph: (415) 205-9068
Karen Merzenich, CNM, WHNP
300 Hartle Ct,
Napa, CA 94559-4078

Ph: (707) 254-1775

Reviews and Comments


Advanced Practice Midwife Nurses in Napa, CA

Mrs. Veronica Ortiz, C.N.M.
Advanced Practice Midwife
Medicare: Not Enrolled in Medicare
Practice Location: 2344 Old Sonoma Rd, Building G, Napa, CA 94559
Phone: 707-253-4227    
Mrs. Laura Ann Paoletti, NP
Advanced Practice Midwife
Medicare: Not Enrolled in Medicare
Practice Location: 1100 Trancas St, Suite 250, Napa, CA 94558
Phone: 707-257-7821    Fax: 707-257-2006
Ms. Heidi Ann Biegel, CNM
Advanced Practice Midwife
Medicare: Not Enrolled in Medicare
Practice Location: 300 Hartle Ct, Napa, CA 94559
Phone: 707-254-1775    
Ms. Lillian Elizabeth Garcia, CNM
Advanced Practice Midwife
Medicare: Medicare Enrolled
Practice Location: 1100 Trancas Street, Suite 250, Napa, CA 94558
Phone: 707-257-7821    Fax: 707-257-2006
Marla Shauer, CNM
Advanced Practice Midwife
Medicare: Not Enrolled in Medicare
Practice Location: 1141 Pear Tree Ln, Napa, CA 94558
Phone: 707-254-1774    Fax: 707-251-2993
Ms. Amber Jasmine Knoche, CNM
Advanced Practice Midwife
Medicare: Medicare Enrolled
Practice Location: 1100 Trancas St, Suite 250, Napa, CA 94558
Phone: 707-254-1774    Fax: 707-251-2993
Jessica Thrift, CNM, WHNP-BC
Advanced Practice Midwife
Medicare: Medicare Enrolled
Practice Location: 300 Hartle Ct, Napa, CA 94559
Phone: 707-254-1775    

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.