BETSY FELSER MD
NPI 1144292897
Internal Medicine in Pasadena, CA
About Betsy Felser Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BETSY FELSER MD (NPI 1144292897) is an individual internal medicine provider in Pasadena, California, licensed in California (G84832) and active in the NPI registry since February 2006. She has opted out of Medicare through January 1, 2027 and remains eligible to order and refer and holds a CLIA Waiver certificate valid through August 31, 2026.
NPPES Registry Identity
Specialties & Licenses
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Opted out of Medicare
Betsy Felser Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 1, 2017 through January 1, 2027.
CLIA Laboratory Certificates CMS CLIA
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate of Waiver 05D0855690
Betsy Felser MD · Pasadena, CAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Betsy Felser's NPI number?
The NPI number for Betsy Felser is 1144292897. It was assigned to this individual provider in the NPPES registry on February 6, 2006.
Where is Betsy Felser located?
Betsy Felser practices at 10 Congress St Suite 202, Pasadena, CA 91105. The listed phone number is (626) 844-9111.
What is Betsy Felser's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Betsy Felser enrolled in Medicare?
No. Betsy Felser has opted out of Medicare through January 1, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.
Does Betsy Felser hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 05D0855690) is associated with this NPI, valid through August 31, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.
When was this NPI record last updated?
The NPPES record for Betsy Felser was last updated on July 8, 2007. NPI Profile syncs with the weekly NPPES data releases published by CMS.
