Karen Bloom, MD
NPI 1932283009 · Internal Medicine Physician · Petaluma, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Bloom, MD is a Internal Medicine Physician provider in Petaluma, CA (NPI 1932283009).
Provider details
- NPI number
- 1932283009
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G62416 (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 · 73 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 256 | 126 |
| Levothyroxine Sodium | 234 | 109 |
| Losartan Potassium | 223 | 103 |
| Amlodipine Besylate | 153 | 69 |
| Omeprazole | 143 | 66 |
| Fluticasone Propionate | 134 | 58 |
| Rosuvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-25
- Last updated
- 2021-12-02
Frequently asked questions
- What is Karen Bloom's NPI number?
- Karen Bloom's National Provider Identifier (NPI) is 1932283009, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Bloom's specialty?
- Karen Bloom is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Bloom located?
- Karen Bloom's practice location on file with NPPES is 3900 Lakeville Hwy, Petaluma, CA 94954-5698.
- What is Karen Bloom's phone number?
- The practice phone number listed in the NPPES registry for Karen Bloom is (707) 765-3900.
- Does Karen Bloom accept Medicare?
- Karen Bloom is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Bloom's NPI active?
- Yes — Karen Bloom's NPI (1932283009) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.