Karen Weiss, NP
NPI 1720328487 · Family Nurse Practitioner · Martinez, CA
Enrolled with Medicare as Order and Referring Only - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Weiss, NP is a Family Nurse Practitioner provider in Martinez, CA (NPI 1720328487).
Provider details
- NPI number
- 1720328487
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- Yes
- License
- 22746 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 64 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 116 | 46 |
| Omeprazole | 109 | 33 |
| Amlodipine Besylate | 90 | 35 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 75 | 27 |
| Levothyroxine Sodium | 71 | 19 |
| Lisinopril | 57 | 25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-02-18
- Last updated
- 2013-02-18
Frequently asked questions
- What is Karen Weiss's NPI number?
- Karen Weiss's National Provider Identifier (NPI) is 1720328487, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Weiss's specialty?
- Karen Weiss is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Weiss located?
- Karen Weiss's practice location on file with NPPES is 1146 Delacy Ave, Martinez, CA 94553-2910.
- What is Karen Weiss's phone number?
- The practice phone number listed in the NPPES registry for Karen Weiss is (925) 313-9353.
- Does Karen Weiss accept Medicare?
- Karen Weiss is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Weiss's NPI active?
- Yes — Karen Weiss's NPI (1720328487) is active in the NPPES registry as of the last update on 2013-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.