1. Home
  2. Directory
  3. California
  4. San Dimas
  5. Obstetrics Gynecology
  6. NPI Profile

DR. KAREN ANNE WESTERMOE MD
NPI 1366593949
Obstetrics & Gynecology - Gynecology in San Dimas, CA

Active since January 12, 2007PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0708755 · Microscopy
1119 VIA VERDE, SAN DIMAS, CA 91773(909) 592-9846(909) 592-2837 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Karen Anne Westermoe Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KAREN ANNE WESTERMOE MD (NPI 1366593949) is an individual gynecology provider in San Dimas, California, licensed in California (G57488) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS, holds a CLIA Microscopy certificate valid through August 31, 2026, and is a graduate of University Of California, Davis School Of Medicine (1984).

NPPES Registry Identity

NPI1366593949
Entity TypeIndividualFemale
Primary Taxonomy207VG0400X
Provider Legal NameDR. KAREN ANNE WESTERMOECredential: MD
Location Address1119 VIA VERDESan Dimas, CA 91773
Mailing Address1119 Via VerdeSan Dimas, CA 91773 · (909) 592-9846 · Fax (909) 592-2837
Phone(909) 592-9846
Fax(909) 592-2837
Sole ProprietorNo
Medical School CMSUniversity Of California, Davis School Of MedicineGraduated 1984
Enumeration DateJanuary 12, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1366593949 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207VG0400X
License✔ Licensed in CA · G57488
Definition
A physician who specializes in diagnosis, treatment, and management of patients with gynecologic conditions. Source: National Uniform Claim Committee
1119 VIA VERDE, San Dimas, CA 91773
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINF25838
Medicare ID-Type UnspecifiedG57488

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Karen Anne Westermoe Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5092878181
PECOS Enrollment IDI20090115000633
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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 for Provider-Performed Microscopy Procedures (PPMP) 05D0708755

Karen A Westermoe MD · San Dimas, CA
Active · expires Aug 31, 2026
CLIA Number05D0708755
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2024
Certificate Expiration DateAugust 31, 2026
Laboratory DirectorKaren A. Westermoe
Laboratory Phone(714) 592-9778
Laboratory LocationKaren A Westermoe MD1119 Via Verde, San Dimas, CA 91773
CLIA data matches this NPI record on: Address
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Stool analysis for blood to screen for colon tumors 82270
A stool analysis for blood is a non-invasive procedure used to check for the presence of hidden blood in your stool. This can be an early sign of colon tumors. The test involves collecting a small sample of stool at home and sending it to a lab for analysis.
260 services260 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
157 services109 patients
Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101
This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.
147 services147 patients
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091
A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.
145 services145 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
106 services106 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
101 services78 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91773 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$142.39 typical visit price
range $62.96 – $187.60
Typical copayment $35.59 (range $15.74 – $46.90)
Most-billed visit code 99204
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Karen Westermoe's NPI number?

The NPI number for Karen Westermoe is 1366593949. It was assigned to this individual provider in the NPPES registry on January 12, 2007.

Where is Karen Westermoe located?

Karen Westermoe practices at 1119 Via Verde, San Dimas, CA 91773. The listed phone number is (909) 592-9846.

What is Karen Westermoe's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecology, with taxonomy code 207VG0400X.

Is Karen Westermoe enrolled in Medicare?

Yes. Karen Westermoe is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Does Karen Westermoe hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0708755) 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 Karen Westermoe was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.