Kathryn Mar, MD
NPI 1659457182 · Family Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathryn Mar, MD is a Family Medicine Physician provider in San Jose, CA (NPI 1659457182).
Provider details
- NPI number
- 1659457182
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A68043 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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 · 82 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 301 | 100 |
| Levothyroxine Sodium | 236 | 67 |
| Losartan Potassium | 186 | 63 |
| Amlodipine Besylate | 170 | 59 |
| Lisinopril | 156 | 55 |
| Simvastatin | 151 | 49 |
| Atenolol | 116 | 31 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-27
- Last updated
- 2021-12-27
Frequently asked questions
- What is Kathryn Mar's NPI number?
- Kathryn Mar's National Provider Identifier (NPI) is 1659457182, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathryn Mar's specialty?
- Kathryn Mar is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kathryn Mar located?
- Kathryn Mar's practice location on file with NPPES is 260 International Cir, San Jose, CA 95119-1130.
- What is Kathryn Mar's phone number?
- The practice phone number listed in the NPPES registry for Kathryn Mar is (408) 972-7000.
- Does Kathryn Mar accept Medicare?
- Kathryn Mar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathryn Mar's NPI active?
- Yes — Kathryn Mar's NPI (1659457182) is active in the NPPES registry as of the last update on 2021-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.