Catharine Malmsten, M.D.
NPI 1205812195 · Cardiovascular Disease Physician · Elk Grove, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catharine Malmsten, M.D. is a Cardiovascular Disease Physician provider in Elk Grove, CA (NPI 1205812195).
Provider details
- NPI number
- 1205812195
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 51440 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 9200 W Wisconsin AveSuite #5100Milwaukee, WI 53226-3522Phone: (414) 805-6633Fax: (414) 805-6280
Registry dates
- Enumerated
- 2005-12-21
- Last updated
- 2022-03-23
- Certified
- 2022-03-23
Frequently asked questions
- What is Catharine Malmsten's NPI number?
- Catharine Malmsten's National Provider Identifier (NPI) is 1205812195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catharine Malmsten's specialty?
- Catharine Malmsten is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Catharine Malmsten located?
- Catharine Malmsten's practice location on file with NPPES is 9394 Big Horn Blvd, Elk Grove, CA 95758-7977.
- What is Catharine Malmsten's phone number?
- The practice phone number listed in the NPPES registry for Catharine Malmsten is (916) 691-8500.
- Does Catharine Malmsten accept Medicare?
- Catharine Malmsten is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catharine Malmsten's NPI active?
- Yes — Catharine Malmsten's NPI (1205812195) is active in the NPPES registry as of the last update on 2022-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.